Class 8 Hummer Pictures of Build

[reverhart]

here are some pictures of the hummer--New A-Arms on the way with uniballs etc to give it 20" of suspension travel after straps--it will remain 4WD
Duramax TURBO diesel engine allison tranny
http://img458.imageshack.us/img458/1298/p7090039vn3.jpg
http://img237.imageshack.us/img237/2653/p7090043rj3.jpg
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http://img201.imageshack.us/img201/4431/p7090050ml1.jpg

[bcampbell04]

that thing is pretty cool. like how you are thinking out-of-the-box and building a Hummer prerunner.

[woundedyak]

That's how the Military needs to build them. Then they won't half to worry about IED'S

[scary fast hummer]

that thing is pretty cool. like how you are thinking out-of-the-box and building a Hummer prerunner.

Not a prerunner, thats the class 8 racer! Rob's doing some real ground breaking for us H1 racers:D

ROb, did you get anything in writing yet from the "powers-that-be"?? Good looking rig mate!

[reverhart]

nothing is writing, but a verbal that it is ok to keep building witht he turbo-they will waiver or make an exception for the 100 if the rule isn't changed by then

[FABRICATOR]

Looks cool.
I like your overhead crane. For me, they are one of those things that once you use it, you can't live without it.

[partybarge_pilot]

Somehow, that cage doesn't look legal. Wheres the diagonal in the rear hoop?

[reverhart]

(Somehow, that cage doesn't look legal. Wheres the diagonal in the rear hoop?)
there are two but in a V one behind the driver and one behind the passenger, its kind-of-like two cages because the Hummer is so wide

[reverhart]

yeah its nice, we have a 50 ton, and 20 ton--don't know what we would do without it


Looks cool.
I like your overhead crane. For me, they are one of those things that once you use it, you can't live without it.

[partybarge_pilot]

there are two but in a V one behind the driver and one behind the passenger, its kind-of-like two cages because the Hummer is so wide

What I was getting at is the diagonal (s) are supposed to be the same dia/wall thickness as the main hoop. Those look smaller.

[reverhart]

oh, I see
We might have to re-do those when we take this to tech then?

thank god I ordered matching paint for the roll cage..lol

[partybarge_pilot]

They will probably tag it with the exeption that you must fix the any noted items before it's first race. You can have the changes checked at the race, so no need for 2 trips.

[reverhart]

They will probably tag it with the exeption that you must fix the any noted items before it's first race. You can have the changes checked at the race, so no need for 2 trips.

that will work

[E&S Racing]

I like it. Looks killer

[bcampbell04]

they'll allow you to run the duramax turbo diesel in class 8??? i wonder if more people will want to have it if they give you the waiver like you said or if other drivers will complain. good luck

putting a fiberglass body on it or anything?

[reverhart]

From what bill Savage told me is that anyone in the unimited classes will be able to run turbo diesels soon

Fiberglass body someday, as for now the hood is fiberglass, and body aluminum

[Bulldozer]

Are you going to use the CTIS?

[Dezertpilot]

yeah its nice, we have a 50 ton, and 20 ton--don't know what we would do without it

You mean a 5 ton and a 2 ton? At the old co. I used to work for we had a 15 ton and a smaller one. 50 ton is HHHHUUUUUUGGGGGGEEEEEEEEE! This was a gantry crane also, I bet like yours. Maybe you do have a 50 ton, but that's 100k, a **** load of weight!:eek:

[reverhart]

nope 50 and 20 TON


You mean a 5 ton and a 2 ton? At the old co. I used to work for we had a 15 ton and a smaller one. 50 ton is HHHHUUUUUUGGGGGGEEEEEEEEE! This was a gantry crane also, I bet like yours. Maybe you do have a 50 ton, but that's 100k, a **** load of weight!:eek:

[Kritter]

This was a gantry crane also, I bet like yours. Maybe you do have a 50 ton, but that's 100k, a **** load of weight!:eek:

Get a look at the hook, it's a ****load of hook.

[reverhart]

Here are some pictures from yesterday, and Todays event at 4 Wheel Parts in Redondo Beach

Race Hummer with Chase Hummers Lined up

Truck is still there today

http://img38.picoodle.com/img/img38/9/7/15/f_P7140060m_f20a1a1.jpg
http://img38.picoodle.com/img/img38/9/7/15/f_P7140057m_10f12cd.jpg

[Dezertpilot]

Get a look at the hook, it's a ****load of hook.

We had the same one! Maybe ours was a little bigger than I remember we used to lift up some BIG parts, we were an aerospace co. But 100,000 lb. crane is pretty F'n huge:eek:
At the Newport News ship yard on the east coast they have a 900 ton Gantry crane:eek: :eek: :eek: Nice piks at the 4wheel parts center. I cant wait to see that hummer run at the 1000. When are u going testing? Id like to see it go down Barstow main:D

[Kritter]

I hope you got that trailer from Matt Svatos...AKA Shrek.

[BRINGTHERUCKUS]

Thats a tank if ive ever seen one. Looks a little heavy does the turbo diesel have enough power to make up for it?

[FABRICATOR]

Who makes those wheels?

[reverhart]

Cepek, or GT wheels makes the beadlocks--with the corect weight and spacing requirements for a hummer

http://www.hummerproducts.com/Beadlock%20Wheels.htm

[reverhart]

sheet metal is almost done--can't wait them a few weeks to get her running--doors dah, and rear --Joe and Moes Speedshop in Reiverside doing the work

the truck is on a diet now, well below 6400 lbs


http://img341.imageshack.us/img341/7844/doorsji4.jpg

[reverhart]

Second round of sheet metal almost done
http://img153.imageshack.us/img153/5800/doorsvo9.jpg Doors are two piece, the rear has hidden latches and hinges and opens for access to batteries tools, etc
http://img141.imageshack.us/img141/3856/p8170067nl3.jpg
Dash and Dog house almost finished
http://img141.imageshack.us/img141/1320/p8170068ss1.jpg
More shots of Dash
http://img141.imageshack.us/img141/979/p8170069gw5.jpg
http://img155.imageshack.us/img155/3547/p8170070oe4.jpg

[Michael Pee]

Are you going to leave it flat black? I think it would look cool.

[reverhart]

I like the flat black also, but most likely its going to get wrapped in some sort of camo witht he sponsor logos on it

[reverhart]

its back in the shop from sheet metal-
http://img206.imageshack.us/img206/9104/dscf0129wt3.jpg http://img405.imageshack.us/img405/8879/dscf0131hq7.jpg http://img206.imageshack.us/img206/7103/dscf0128gb3.jpg http://img258.imageshack.us/img258/5427/dscf0133ij4.jpg

[reverhart]

we are having a little trouble with our new a-arms
I'm wondering if we should raise the attachment point for the top arms
its hard to see in the pictue, but thay are not moving together, and the top uni-ball is maxing out before the bottom

any words or wisdom or site that detail a-arm design?

[JGunn]

we are having a little trouble with our new a-arms
I'm wondering if we should raise the attachment point for the top arms
its hard to see in the pictue, but thay are not moving together, and the top uni-ball is maxing out before the bottom

any words or wisdom or site that detail a-arm design?


Yea, attach that lower part of the by-pass and it will work better. JK, sorry I had too...:D

[Mark Newhan]

Moving the a-arm piviot wont change the problem with the uniball not having enough misalignment. With an un-equal length a-arm design you cant over come the fact that the top (shorter) arm will use up the misalignment first. Making them equal lenght is not the answer for a number of reasons. The reality is that with the short a-arms you are limited on the amount of useable wheel travel.

I suggest that you use what you have and make it work the best you can... Its quality over quantity.

[partybarge_pilot]

I suggest that you use what you have and make it work the best you can... Its quality over quantity.


Yep, limit strap that sucker up and run it. I would also put hard spacers in both shocks to limit the droop at where the uniball binds in case your straps fail.

Also, double shearing that thing would be a good idea.

[Ramsey_ElWardani]

Is the upper uni-ball "maxing out" in both compression and droop? In other words is it centered in its range of movement? If not, relocate it in the upper arm or put some bend in the arm.

[reverhart]

I gave it some thought over the weekend, and did some work on autocad, it appears if I raise the top a-arm pivot mount, and move it inward, so that the length of the top and bottom arm are nearly the same, and the angles are the same it will travel like its supposed to at 22"--strapped and bumped at 20"--with the wheels staying relatively straight


If not, relocate it in the upper arm or put some bend in the arm.

right now with the top arm so short the uni-ball is maxing out on the top well before the bottom in droop and compression--think I just needed some time out of the 100 degree shop to work thru the frustration.

thanks guys

[reverhart]

Also, double shearing that thing would be a good idea.[/QUOTE]

The bottom arm is double sheared, the top is single sheared, based on the design of the geared hub, it will be tough to take the top uni-ball out of single shear.

[Mark Newhan]

If you raise the piviot you will generate negitive camber at droop. Secondly, when the chasis rolls it can create a positive camber effect. Not a real efficent use of the tire contact patch on the outside, loaded wheel in a turn. The effect is increased when you turn due to caster.

[reverhart]

Found a great thread I'm reading http://www.race-dezert.com/forum/showthread.php?t=18207

Is there a CAD program to set-up a-arms--I gleened there was one floating around?

Also the stock a-arms were angled where they pivoted at the frame, rear of the a-arms was lower than the front--this is on purpose so the arm moves up and the hub of the wheel moves up and back?--is that corect>

I don't quite understand
we have geared hubs at the wheel, with an upper and lower uniball the distance is 15.5" from top to bottom center of the uni-balls--I am proposing to raise the upper arm mounting points to make the total distance between the top and bottom mounting points 15.5" and moving the mounting points inward so that each arm is about the same length--from my perspective it would make the arms move in a parallel plane to each other, and we would be limited on this movement by the uni-ball rotation till they are maxed, or till our cv joints are maxed (probably the later)

it would keep the wheel perpendicular to the ground within 1 degree before the uni-balls max-

Isn't this the way class 1s with long travel arms work, or as your describing camber effects am I wrong? Does the top arm need to be shorter? Do you not want the tire to be flat to the ground thru its travel? --This is my first truck, and I'm sure we will learn in barstow in a couple of weeks--until then I'd like to make the best guess

[partybarge_pilot]

I don't think moving your upper pivot in an inch will give an arm that is the same lenght as the lower. The top uniball mount on the spindle is farther in than the bottom so even if your inner mounts were strait up and down from each other it would still be shorter.

This is where a vertically mounted upper really helps.

[reverhart]

Wonder how its going to go taking the truck across the border
We finally signed our major sponsor!!
http://www.forscom.army.mil/reeng/1-G8/Logo%20Template%20-%20Army%20Strong%201.jpg

WE WILL RUNNING OUR RACES GREEN
Thanks to EXTREME BIO-DIESEL in Santa Ana Ca

Our Duramax Diesel Engine will be running at peak performance thanks to Red Line Diesel Performance in Corona Ca. Do you want to convert your stock diesel truck into a monster--contact Red-Line Performance at (951) 734-2700

NOW FOR PRE-RUNNING SET TO START IN A FEW WEEKS-

[Bulldozer]

Wonder how its going to go taking the truck across the border
We finally signed our major sponsor!!
http://www.forscom.army.mil/reeng/1-G8/Logo%20Template%20-%20Army%20Strong%201.jpg

WE WILL RUNNING OUR RACES GREEN
Thanks to EXTREME BIO-DIESEL in Santa Ana Ca

Our Duramax Diesel Engine will be running at peak performance thanks to Red Line Diesel Performance in Corona Ca. Do you want to convert your stock diesel truck into a monster--contact Red-Line Performance at (951) 734-2700

NOW FOR PRE-RUNNING SET TO START IN A FEW WEEKS-

Freakin awesome.

I couldn't think of a better sponsor to run on the hummer!

[E&S Racing]

That's great guys. Good job and good luck. See ya down there for sure

[bcampbell04]

awesome sponsor. best of luck

[reverhart]

thanks everyone, its the motivator we need to get her done

[therail]

Awesome job on landing a sponsor.

[reverhart]

Looks liek hell, its completely torn down, now al lthe red-loctite and parts are being put back on for good

well the suspension is moving like it is supposed to now-that is the last major hurdle -tires stick out 6.5" wider than stock each side, so the track width is 96-97"
We are in process of flaring the hood, and widening the rear fenders

http://img339.imageshack.us/img339/6081/pa160148vh3.jpg
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[swiftracing5]

Whats going to be your first race?

[scary fast hummer]

WOW! Are you going to be able to trailer it?! Maybe it will have to go on its side like the Miss Bud Hydroplane boat...

Awesome job, let us know how it goes when you get the suspension tested and cycled in dirt.

Cheers mate!:D

[maxyedor]

Looks great, only comment I have is that it looks like the front bump-cans need to be about 2" lower so that they bottom before the shocks do.

[reverhart]

good eye on the bump cans

due to the geometry of the hummer style front end th 4" bumps wont work, they contact the arm way too early
weneed to witch to 2" bumps--but in the meantime we are going to modify these bumps so they stop 2.5" earlier

first race, dunno seems that last 10% takes 90% of the time,really wanna do henderson in December

[Samco Fab]

You might check out the Light Racing bump stops, they have a 1.5" stroke stop that would fit your application very well, and they have some cool mounting devices that are made for setups similar to yours.

They are also 2.75" diameter, and externally adjustable.

Your H1 reminds me of 8 H1's that we built about 6 years ago that had a ton of suspension mods, 4" King Kongs in the rear and 4" rear coil overs (all 3" in front) and had air bumps on each corner.

They had 17" of wheel travel on all 4 corners, but was stock width. They are very cool machines,

[reverhart]

really 8 H1s were built, for what?
do you have any pictures or more information?
sounds cool

[baja619]

Ill second Light Racing. They have many great products!

[Samco Fab]

really 8 H1s were built, for what?
do you have any pictures or more information?
sounds cool

Um....taxpayers paid for these cool machines, so Uncle Sam needed King Kongs to go fast in the desert.

Interestingly, the first set of 4" King Kong bypass shocks ever built went on the first prototype version of this hummer. I will try to scan some pictures when I get a chance.

[reverhart]

cool, so these vehicles are still in service?

now I know who to market my new hummer suspensions to..lol

[151fab]

What machine shop are those pictures taken at. It looks like some big horizontal mills or mabey presses. Would be a cool background for a photo shoot when your finished, very heavy-duty industrial, like the H1.

[E&S Racing]

THis H1 is turning out bitchen. Keep up the good work

[reverhart]

yes they are huge vertical and horizontal mills
some of the biggest turning capacity on the west coast, they belong to my partner Steve


What machine shop are those pictures taken at. It looks like some big horizontal mills or mabey presses. Would be a cool background for a photo shoot when your finished, very heavy-duty industrial, like the H1.

[fj40forlife]

this thing is huge, but badass at the same time. Saw it when i went to there shop

[eterpay]

How did you make out w/ the fires?

[Michael Pee]

What are you doing about the rules re: Diesels? From reading the press release, it looks like SCORE is going to start allowing them in January (not for the MIL).

[reverhart]

I'm still evacuated from the fires in Arrowhead, my house is smack dab in the burn area, but it made it, it will be awhile untill they let us back due to utilities, gas mains on fire, and hot spots in the area.

We are happy about the rule change for diesels, Tech said they would issue waivers for the 07 1000 due to the rule change coming.

We are not able to run now because of logistics and testing time in the truck, but we are racing the full season next year --now more than ever seeing that I'm under mandatroy evacuation--but at least my house didn't burn!!! that great

[Michael Pee]

Sorry you are not going to be able to make it. I was excited to see it go!

[grantdcol]

This is a great thread, what's the latest news? I'm sure we would all like to see your updated progress.

I have a friend working on a project that incorporates A-arms and hummer portals. Ball joints would be preferable in his circumstances due to their longevity and replacability (this is more of an expedition rig that a race-truck). Did you choose to use lower uniballs because of their strength or because the ball joints would limit travel?

Would you be able to post some detailed pictures of your upper and lower uniballs which show how they interface with the hummer portals?

Thanks,
Colin

[reverhart]

Its been a while--work has gotten the best of me-with Travel, so progress has been slow
but last night we got the engine computers talking to our laptop (EFI Live)
We are very close to starting the Duramax Engine

Clyde Stires from Red-Line Diesel Performance spent the evening working through the stock harnessess--and made huge progress

Redline Diesel Performance Llc
Street: 1787 Pomona Road
Corona, ca 92880-6995
Phone: (951) 734-2700

Still need a good mobile wiring guy for lights ,etc!!

http://img211.imageshack.us/img211/3451/p3060015yp8.jpg
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[Brice]

looks awesome guys! nice to see something different :)

[CharlieIII]

That thing is a beast! Looks killer though...

[scary fast hummer]

Um....taxpayers paid for these cool machines, so Uncle Sam needed King Kongs to go fast in the desert.

Interestingly, the first set of 4" King Kong bypass shocks ever built went on the first prototype version of this hummer. I will try to scan some pictures when I get a chance.

Was this one of them?

I've been drooling over the suspension for years. I would love to see any more pics you have. I just fabbed up some mounts for the smaller LightForce bumpstops on H1.

[gawdodirt]

Not a prerunner, thats the class 8 racer! Rob's doing some real ground breaking for us H1 racers:D

ROb, did you get anything in writing yet from the "powers-that-be"?? Good looking rig mate!


Ground breaking in what manner?
Team HUMMER already went down the Full Stock H1 route and used the Duramax and Allison. You mean the longer travel ? Didn't Brad Falin have a similar vehicle ?

And does CLASS 8 have to have a minimum production numbers to be legal?

The H1 only sold 336 last year.

Looks cool and it certainly is different. What does it weigh at this stage?

Those front upper coil shock mounts are side loading one bar . The same bar that the damping shocks are.
Ya gotta have faith...

GD

[reverhart]

this has taken a long time, who would have thought it would take a year and a handfull of months to build a race truck in your spare time..lol

With the help of Clyde S. from Red Line Diesel Performance in Corona, we got the beast started up, and running, hopefully to hit dirt next weekend!!

below is a link to a crappy video to hear the 2006 LBZ duramax making some noise, you can hear the turbo well with the short straight 4" exhaust

http://sponsorhouse.loopd.com/Members/RobHUMMER/Videos.aspx?resourceId=3e35607a-e991-45b9-876f-7556d99f39e2&from=2

[partybarge_pilot]

Cool!

[Brice]

that sounds rad. can't wait to see it in the dirt! :)

[scary fast hummer]

Great job! You know all it takes is a little time, money, energy, money, faith, money, sweat, money, friends, money, and a little extra cash:D

Bet you cant wait to git 'er flyin!!!

[reverhart]

:) http://www.youtube.com/watch?v=dImg3DG45DM

First movement of the truck
1) found out it was in Low Lock on the transfer case (encoder motor not hooked up, so couldn't switch)
2) Front caliper was binding
3) binding of front cv shafts? might need to change to non-plunging 934s (anyone know where we can find some of those?)
4) got a brake leak
5) we were in limp mode on the allison 6-speed tranny, but that was fixed
6) Steering linkage went thru a few adjustments, but its ok now
7) and we had to change a tire

our list that was getting shorter just got a few more bullet points

[Dezertpilot]

BAMF truck! When do u think it will be attending its first race?

[reverhart]

Dunno when the first race will be
but second day of testing and prep, yielded some good results

http://www.youtube.com/watch?v=yqyQXIjPVls

[scary fast hummer]

Rob, have you sorted out the front CV's? Any idea what the problem is/was??

Well done!

[reverhart]

front cvs will still need some work--biggest issue was the transfercase was in low lock--and you know how four wheel drive and pavement work for turning a tight radius
I'm going to pay a visit to RVC Performance in illinois next week to work on a custom solution a hybrid between a hummer and a pro-4 cv joint set-up--might use the round CV--it will be expensive, but he will guarantee the axles for life!!
http://rcvperformance.com/store//catalog/images/ULTPRO4.jpg

[reverhart]

caught a few pictures today

new video of the carnage today--not quite ready for dezert testing, but getting close
YouTube - Hummer Testing Day 3

[scary fast hummer]

Rob, hard to read in the video, what happened with the uniball. I

Are you using 12k shafts or the 10K?? If they are custom already, which are they built from? Brad falin told me he uses the 10K shafts in his Hummer buggy because they have more articulation than the 12k shafts (more travel)

[reverhart]

custom made shafts, 400m with 934.5 cv joints, and our own special hummer adapter plates, will be moving to CORR PRo-4 cvs soon up front at least

we have much more articulation, and the shaft is stronger on our half-shafts than anything hummer has come up with

uni-ball slid out from the lower ear of the geared hub, there was a keeper plate on the bottom, bolts sheared, bigger keeper plate this week, nothing wrong with uni-ball or geared hub, but the rim is toast

[reverhart]

just got it back from paint graphics tomorrow morning
http://img182.imageshack.us/img182/6797/p5150066qo9.jpg
http://img228.imageshack.us/img228/802/p5150070fj0.jpg

http://img179.imageshack.us/img179/6442/p5150069yy6.jpg

[scary fast hummer]

Hey Rob, did you get the half shafts sorted out? Inquiring minds want to know ;-)

Cole

[zjohnson]

How is the tranny holding up, how much power are you making with the turbos deisel? Looking at using a turbo diesel and Allision in a vehicle.

Thanks

[reverhart]

tranny is holding up well, allison 6-speed, billet 1000 hp torque converter stage 3, and billet shafts, shiftgo jr shift kit
but we are in preliminary testing so I'll have to let you know

Half-shafts are better, we ordered new front from a company that makes them for PRO-4 trucks in CORR. we worked on the plunge and now they only click in full radius turns.

Truck is sitting at the Orange county Fairgrounds this weekend at the off-road show

http://img185.imageshack.us/img185/7341/p5160074dq3.jpg

[reverhart]

Hodge Road -Testing Saturday morning-Stoddard Valley - Barstow Race Course

Runs good, too much suspension travel/too soft, kept hitting cv shafts against frame and breaking them, gotta get 800-900 lb springs and change the position of the differential to avoid having the cv shafts hit--we didn't get much film, this is kurt's video he posted up we- were going thru whoop sections at about 60 rides like a big old boat cadillac truck looks and feel slow but the speedo tells different, different than a bugg


http://www.youtube.com/watch?v=StDgD8bfR0c"]http://www.youtube.com/watch?v=StDgD8bfR0c

[GunnSlinger]

awsome looking truck! .. what series are you planing on running?

[reverhart]

BITD ,and SCORE
also More and others local in the Barstow Lucerne Valley area

[1450-ranger]

Good job on getting it done. Why is the axle shaft able to interfere with the frame?

[El Ranas]

It looks very nice!!

When will be the first race?

[Ramsey_ElWardani]

Why do you think you need more spring rate? Looks to me like you need a lot more damping, both compression and rebound, not spring rate - but I wasn't there.

[reverhart]

Good point Ramsey..We have not adjusted the shocks yet..we wanted to figure some big problems out before we go to Plaster City with Fox,,
.we are thinking we need more spring rate due to the following:
please comment, because we are new to this.

We crank the coil-overs and set the ride height, looks good, then we run it and the ride height lowers by 4", and the a-arms flatten out, it kept lowering all day

We have also experienced, setting ride height, and two days later sitting in the shop it sags down a few inches,

We have also experienced, when we put the ruck in reverse it sags down, then you have to put it in forward gears and jump on it and the rear jumps back up.

The bump stops do not work in the position they are in, they applied too little resistance where they are placed on the lever arm.

Because the bump cans are in the wrong place, and the springs are too soft (and the shocks aren't set up correctly--that is why our frame made contact with the half-shafts and broke the cvs. (we think)

the ride was great, I hate to stiffen it up even though we probably need to

[Ramsey_ElWardani]

Here are a couple of good primers on the subject, and worth a read:

http://www.pirate4x4.com/tech/billavista/coilovers/Part_1/

http://www.pirate4x4.com/tech/billavista/coilovers/Part_2/

He is not a Desert Racer, but you can take much of what he has written and apply it to what you are doing.

[reverhart]

The settling over time is the real question I have...that has got to be too soft of springs--I've read the coil-over primer, and I'm re-reading it now



Here are a couple of good primers on the subject, and worth a read:

http://www.pirate4x4.com/tech/billavista/coilovers/Part_1/

http://www.pirate4x4.com/tech/billavista/coilovers/Part_2/

He is not a Desert Racer, but you can take much of what he has written and apply it to what you are doing.

[partybarge_pilot]

Because the bump cans are in the wrong place, and the springs are too soft (and the shocks aren't set up correctly--that is why our frame made contact with the half-shafts and broke the cvs. (we think)

The axles should clear the frame fully bottomed with the shocks out if everything is set up right. You need to set the bump cans as far out on the arm as possible and have them bottom before anything hits. Might also look into getting the thick rubber bottoming disks from Fox for the shocks so that they bottom about the same time as the bumps spreading the load.

[LTL220]

Here are a couple of good primers on the subject, and worth a read:

http://www.pirate4x4.com/tech/billavista/coilovers/Part_1/

http://www.pirate4x4.com/tech/billavista/coilovers/Part_2/

He is not a Desert Racer, but you can take much of what he has written and apply it to what you are doing.


Primers, those links are primers?!? LOL :eek:

GREAT LINKS! Thanks for the tutorial!

[scary fast hummer]

The axles should clear the frame fully bottomed with the shocks out if everything is set up right. You need to set the bump cans as far out on the arm as possible and have them bottom before anything hits. Might also look into getting the thick rubber bottoming disks from Fox for the shocks so that they bottom about the same time as the bumps spreading the load.


Rob, might sound counter intuitive but, what if you lowered the diffs a little? A small spacer between the cross bars and diff hangers, maybe an inch or so, might give you substantial up travel on the half shafts at full compression without comprimising any ground clearance. Other wise it seems you'll have to limit full compression at a point just short of the half shafts striking the chassis, and that would be a shame.

Just a thought...:confused:

[reverhart]

Lowering blocks are already being made..lol
biggest hurdle is getting th big old springs made in a timely manner

[Dezertpilot]

Looks awesome! Great job and good luck in the future:)

[reverhart]

http://www.youtube.com/watch?v=cMV2pOulV5M

we didn't get much video, we need more crew out when we test, but the suspension is getting less soft--we worked on the coil over locations, and messed with the bypass shocks

this is the only video we caught when we were coming into camp or out--slow about 7-80 max in this area

[racer56]

Looks like you did alot of siren testing.

[reverhart]

yeah co-drivers tend to like to push that button
but in all fairness, where the video guy was standing was close to a bunch of camps, and our engine isn't that loud, wanted to give people a warning when we were coming back into the camp area--we were right at the entrance to outlet center

[GHAcompanies1596]

You should have went through barstow main! myxer.com

what clyde driving?

[reverhart]

Clyde wasn't driving this outing
he was pushing th siiren

we had a little problem with our front shocks so we had to end the day early

next time out we wil lfilm it on main, we broke early

[Calilove1]

No race shots here yet but here's some Pre-run fun with the stock H1's.... VTR 2008
(We won't do that again... :eek:) Anyone want to sell Rob a pre-runner. :D


http://www.youtube.com/watch?v=m7JVgyhq4w0"]http://www.youtube.com/watch?v=m7JVgyhq4w0

I'll get some more "testing" footage up soon when we get back out to Barstow.....

Enjoy!

[bcampbell04]

man those siltbeds are a blast aren't they? have fun, i know i did last year!

[ZJARCHER]

No race shots here yet but here's some Pre-run fun with the stock H1's.... VTR 2008
(We won't do that again... :eek:) Anyone want to sell Rob a pre-runner. :D

http://www.youtube.com/watch?v=m7JVgyhq4w0

I'll get some more "testing" footage up soon when we get back out to Barstow.....

Enjoy!

Im selling my Toyota.. its 90% ready for 1450 but all Ive done is preran with it, will make a heck of alot better of a prerunner than those H1s will, hahaha... Long Travel 4x4, cant beat it!

Oh yeah, its my DD as well... reliable, all windows still in it, heat, cold AC... Think about it ;)

[reverhart]

you tube from testing this weekend--this was funny as hell, my son was trying to film us coming back towards camp, and he picked up on a jeepspeed soming onto the lake bed at lucerne, thinking it was us from a distance...then we show up and fluster him a little..lol

http://www.youtube.com/watch?v=8mMp3pErKGY

this one might make you sick--don't try holding a camera while testing shock valving and spring rate adjustment

http://www.youtube.com/watch?v=JhMifaVWuUg

[Calilove1]

More footage from Saturday's testing


http://www.youtube.com/watch?v=aBTh4a2IxtQ"]http://www.youtube.com/watch?v=aBTh4a2IxtQ

[Triaged]

How did it do? Any updates?

[reverhart]

First RaceRace Recap:
We planned to take it easy the first two laps, and we did--well not quite two laps--lol
We took off last in our class right behind the overall winner #25
We took it easy and passed our roaming pit#1 at about mm 5 running good--keeping the speed down to get through the rough
We found a quicker section and kept it around 50-60 ish holding our own, we got passed a couple times then got a flat about mm 12 I think not sure--we were having problems with speed and holding it straight, and then we got bumped in the rear by a 10 car(we didn't know he was there in our dirt cloud--not dust--) (We found our #1 problem--radio--we were not able to communicate well with anyone)
We used the new hydraulic jacking system and changed a tire in no real hurry--tire was shredded bad, and hot as hell--we also were running hot-(Running hot our also #1 problem tied with the radio)
Troy and Art showed up after we had the new tire on and we traded out our old tire for a new one on Troy's advise. The truck cooled down and we were ready to go!!(found some good info for support guys--we are helpless in the truck, and need someone in front of the truck making eye contact with the driver to give direction, we can't see where people are around the truck)
we hit it again--I was a little shy on the gas truck felt really loose--trying to figure out if it was ok after the tire or not.
we continued to race going a little slow compared to traffic steering felt sloppy--we kept it at 70-80 in most of the areas--hit 91 through one spot, I had problems going straight in loose material--felt like the truck was wandering side to side really bad--right before 10 am at mm 33-34 we had to pull it over due to steering was really bad, and right as we made that call, I lost power and we coated to a poor place between two lines to see what was wrong.
We realized we had a rear cv joint blow on the driver's side--shaft had not come out but the cv was destroyed. The cv was actually on fire a bit from getting so hot, the boot was shredded. the boot on the opposite side was also off and the cv was dry and filled with sand. We called in the rescue party, and Kurt and Clyde showed up quickly with the CV joint, some grease they borrowed, and the tools, we had problems with the hydraulic jack due to sand in the fittings--we need to get dust caps for them at a minimum. We repaired the cv, and then looked at the steering (BTW the driver's side shock mount lifted up again also--hole in hood) the steering gear was hanging by one loose bolt the other two sheared--so I guess they were loose ,and sheared--that was our steering issue. we planned to tighten the last bolt complete the lap--we were around mm 33-34 of a 39 mile track, and now we were at the easy section near the lake bed we practiced in. We started up the truck as saw oil pouring out--the steering gear ruptured an oil cooler line.
so we were done-- we tried towing it, but the lack of steering killed us, we had to trailer it out--(that is a whole other story--all I can say is thanks ART, GREG, TROY, KURT, DAVID, and Mr. Strange)
when trying to put the truck on the trailer we had no drive motion forward or reverse-- We will find out what caused that--may be a cv, or rear diff is out--)

So close, but now the good news
NO overheating--we got hot but the new coolant didn't boil over
No boost hose failure!!
No rear radius rod failure*** see below

We had great fun, hopefully I won't be so stressed now that we popped the cherry on the truck and drivers--WE did a RACE!!!!!

Thanks to everyone again--no rushing next time--when truck is ready again we'll race

Rear radius rod poly bushing melted due to exhaust too close to it--that would be the answer why people witnesses our rear tire towing in and out.

We also lost one of the cheapo HID lights up front, and part of our exhaust.

Funny story--after we lost the exhaust the truck sounded different, and every time I would step on the gas, we thought another truck was on our butt, so we'd slow and look-then when we saw nothing we'd step on the gas and think a truck was on our ass again-then we figured we lost the exhaust--truck sounded mean without the spark arrestor

[scary fast hummer]

Congrats on the first blooding of the beast! Any ideas on why the steering bolts sheared or ideas to keep it from happening again??

[chicken lips the ocho]

are you guys gonna race the 1000? would love to see that

[reverhart]

From past hummer experience--they usually shear when they are loose
I hope that wasn't the case, but I kind of hope it was now, we will put the three back in, and add a 4th, and see if that help--I really want the run the 1000 also this year, its short and a loop.. we'll see how the truck comes together


Congrats on the first blooding of the beast! Any ideas on why the steering bolts sheared or ideas to keep it from happening again??

[Samco Fab]

We always saftey wired the steering box bolts and the halfshaft (CV) bolts on our race H1's. They will loosen up.

[scary fast hummer]

We always saftey wired the steering box bolts and the halfshaft (CV) bolts on our race H1's. They will loosen up.


Sam, you wouldn't have any of those safety wire drilled steering bolts laying about would you? Looks like Rob could use a set and I've got my steering box where I can get to it at the moment so now would be the time! I already have the safety wire bolts for the half shafts.

BTW, did you ever find the plans for shorter rear radius arm fab job for my H1?? I need to do something with them!

[Samco Fab]

Sam, you wouldn't have any of those safety wire drilled steering bolts laying about would you? Looks like Rob could use a set and I've got my steering box where I can get to it at the moment so now would be the time! I already have the safety wire bolts for the half shafts.

BTW, did you ever find the plans for shorter rear radius arm fab job for my H1?? I need to do something with them!

Sorry I did not get back sooner on the radius arm brackets. I will send you a pm on some info. I could also drill some steering box bolts, but if you need them right away, get one of those saftey wire drill jigs from Coleman, or Aircraft Spruce. They will pay for themselves.

[reverhart]

Why do you want to go short on the rear radius rods, the longer = less toe in/out change
we have been fighting trying to get the minimum amount of change, and still haven't won

[Samco Fab]

Why do you want to go short on the rear radius rods, the longer = less toe in/out change
we have been fighting trying to get the minimum amount of change, and still haven't won

When we built our long travel H1's, we put the radius rod at the centerline of the lower ball joint, and then mounted the inside on the lower control arm. I got the idea from Ivan Stewart's PPI TT, although it is mounted on the back side of the control arm.

With the bracket that we made, there is 0 toe change. It puts a bit more load on the A arm bushings, as all the forces from the radius arm are put onto the lower control arms. We ran Delrin bushings. The brackets were tested and proven even with a 4000 lb payload and thousands of hard off road miles. The 7/8"rod ends will wear out about every 1000 hard off road miles.

[scary fast hummer]

'Zactly what Sam said! We found that when the back end got airborne and rear suspension went into full droop the back end would toe in. That made the landing very squirrely. The other issue for me is I put my hydraulic bumpstops where the rear radius arm goes through :o (I completely underestimated the issue before I whacked out the chassis side fitting. Ain't hindsight amazing?!)

Sam, I just replaced all the suspension bushings with new stock ones as per Brad Falin's recommendation. Should I re-do the rear lowers with Delrin ones before I assemble the suspension to compensate for the extra stress??

[Bellvis]

Hey Rob, any luck with fixing the front end from that last race?

Wish I could have made it out there.

[reverhart]

http://www.youtube.com/watch?v=K6DtmXww6T8"]http://www.youtube.com/watch?v=K6DtmXww6T8

its heavy buts its getting there
had an engine fire, and lost the turbo--black smoke

[TheHoov]

Wow thats amazing! I love this truck! Hows the front end working out?

HooV

[CHROMOLY77]

nice job guys hope to cya in the 1000

[reverhart]

Front end Good, brand new home made cross members (front and rear) , and new shock mounting--its tough now


Wow thats amazing! I love this truck! Hows the front end working out?

HooV

[reverhart]

http://www.vimeo.com/5302714

[CANIDAERACING]

i was gonna say someone built you way to big of a tune with efi live to have that much smoke!! your turbo was broke that explains it. you do use efi live for tuning right?
i hope so!

[reverhart]

yep EFI live
we had an engine fire a couple days before, I had to rewire the whole engine (new harness) replace 3 injectores, and a bunch of hose/tubing
we took it out to the track and I noticed the turbo wasn't generating boost, (black smoke) found the issue in the wiring harness --we had to get some laps in to work on the springs and shocks --we wanted to run a few laps so we could adjust shocks while we found the turbo issue -- of course that is when it was filmed
all fixed
We have been working the tune to use all the fuel

[TheHoov]

What turbo are you using? The Stocker? All that black smoke is unburnt fuel... and not enough air.. Hopefully you guys get this all worked out i cant wait to see this in the 1000!

HooV

[GHAcompanies1596]

i was gonna say someone built you way to big of a tune with efi live to have that much smoke!! your turbo was broke that explains it. you do use efi live for tuning right?
i hope so!

the same guy i turned you onto, tunes for redline diesel perf (which stuck the dmax in that beast) although i don't think that was one of his tunes.

i have a huge tune on my lmm, it puffs and cleans right up, constant black smoke is just unburned fuel.. some people actually want smoke tunes.. which is f'n retarded IMO...
at first my truck would smoke through all six gears at WOT, but egr block fixed that issue.

[CANIDAERACING]

yep i know exactly what your talking about. who builds the hummers tranny's mike L? what dmax is it and whats done to it?

[TheHoov]

yep i know exactly what your talking about. who builds the hummers tranny's mike L? what dmax is it and whats done to it?

Mike L. knows his stuff when it comes to the allison... Highly recomended!

HooV

[CANIDAERACING]

yep i have a stage 4 and 1/2 suncoast hybrid by none other than mike L. hes the best allison guy in the country imho! nasty girl has his trannys built by him.

[CANIDAERACING]

if you want to really wake that lbz duramax up pm me diesels are my second love beside off road racing. that motor has more potential than you could imagine!! and what you described about your tranny build id say its on serious borrowed time!! pm me and i can def help you get the motor and tranny running really good..

[jason@gmachine]

http://www.dezertrangers.com/vb/showthread.php?t=13187&page=795#

http://www.dezertrangers.com/vb/showthread.php?t=13187&page=795#

http://photos-e.ak.fbcdn.net/hphotos-ak-snc3/hs438.snc3/25192_1318306051697_1652147607_767977_6812427_n.jp g

http://photos-f.ak.fbcdn.net/hphotos-ak-snc3/hs418.snc3/25192_1318306131699_1652147607_767978_7098191_n.jp g

Jason

[jason@gmachine]

http://hphotos-snc3.fbcdn.net/hs422.snc3/24415_1298280311066_1652147607_727147_6519606_n.jp g

http://hphotos-snc3.fbcdn.net/hs402.snc3/24415_1298280351067_1652147607_727148_4726189_n.jp g

jason

[scary fast hummer]

Cool stuff! Is it just me or do the first two pics in the the first image post not load??

[scary fast hummer]

Jason, are these the arms that Rob Everhart is using now? I heard one broke. What happened? Just bad luck?? Curious to know as I have a H1 racer and might be looking to do arms sometime in the future.

Thanks!

[jason@gmachine]

Jason, are these the arms that Rob Everhart is using now? I heard one broke. What happened? Just bad luck?? Curious to know as I have a H1 racer and might be looking to do arms sometime in the future.

Thanks!


Yes, he picked them up last Thursday. He did mention something about one rear arm having trouble last race, not sure exactly what happened, i was not there.

Let me know on the arms, these were made to Robs specifications with his setup and from all 4130.
jason

[reverhart]

The arms are pretty nice
we are in the process of getting them on the truck, Jason's Arms are not the one's that broke, GMRs' arms will be the cure--we hope

One of our arms broke due to a bad weld and weld prep

we have some other changes to the truck going on right now in parallel getting ready for the next race, trying to shed some weight, and just got some bigger bypass shocks in today--we wil lsee if they can dampen the ride a bit

[reverhart]

These arms are far from stock--and will not bolt up to a stock hummer -- Cole you will need to do some major overhall on your cross members between your frame --they are also lengthed-- but Jason did a great job-- if you need something like this give him a call

Yes, he picked them up last Thursday. He did mention something about one rear arm having trouble last race, not sure exactly what happened, i was not there.

Let me know on the arms, these were made to Robs specifications with his setup and from all 4130.
jason

[scary fast hummer]

These arms are far from stock--and will not bolt up to a stock hummer -- Cole you will need to do some major overhall on your cross members between your frame --they are also lengthed-- but Jason did a great job-- if you need something like this give him a call

Hi Rob, glad to hear you have some new good kit. Oh yeah, I know they wont go on my truck (yet!). The coil overs and bypass shocks, longer arms and uber travel are a long way down the road (read=need more $$$). Still working on my big girl. Just installed 1.25" sway bars on front and back. That should keep the 200L fuel tank from rolling the back of the truck around!

[scary fast hummer]

Rob, just curious; do these arms push you from Class 8 into the Trophy/Trick Truck class??

[BRINGTHERUCKUS]

nope.... you can run custom arms in class 8.

[jason@gmachine]

new upper J arms for the front end of the Hummer!

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs700.snc4/62066_141981919179865_114434808601243_221543_72126 97_n.jpg

[jason@gmachine]

Rob also reworked the rear of the truck to loose weight and setup the chassis differently... IE.. fuel cell and parts....

I made the shock tower cross member setup for the rear to match the lower arms.
http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs080.ash2/37345_1539833818041_1300795975_1445610_5930186_n.j pg


http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs080.ash2/37345_1539834658062_1300795975_1445611_1138063_n.j pg

[BRINGTHERUCKUS]

new upper J arms for the front end of the Hummer!

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs700.snc4/62066_141981919179865_114434808601243_221543_72126 97_n.jpg

so thats what those pics are of....

[NAS Industries]

What size spring you running on the front?

[reverhart]

spring 3.75 x 700#

[reverhart]

The Hummer had been under the knife since spring, almost ready to go out and cause some mayhem again
We have repalced al lthe upper and lower suspension arms with new 4130 welded arms by the GMR
Weremoved the rear set-up for the spare tires, and replaced the rear shock moutns with a new shock tower designed to mount the spares lower in the truck, helping the center of gravity, we also went for a 64 gallon dual fuel cell to a single fuel safe 42 gallon cell --changed some tubing in the rear, removed the rear radius rods, in favor of a custom addition to the geared hub to keep the wheels straigh as they go through the range of travelhttp://img412.imageshack.us/img412/2613/hummerfrontarms2.jpghttp://img405.imageshack.us/img405/7575/hummerfrontarms.jpghttp://img827.imageshack.us/img827/3743/hummerfrontarms3.jpghttp://img694.imageshack.us/img694/9146/hummertiremount.jpg

[Beebe]

I think my H3 should get your Hummers hand-me-downs ;)

[Dezertpilot]

That is so gnar, I see Jason is shreddin the gnar over there LOL

[jason@gmachine]

Rear Upper Arms.

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs894.snc4/72751_147454705299253_114434808601243_247864_73107 34_n.jpg

Machine work was done by the guys at Camco Machine.
Plate work by the GMR.

Jason

[95f150]

By far the most badass truck I have ever seen

[jason@gmachine]

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1387.snc4/163952_163068610404529_114434808601243_345990_4276 937_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs762.ash1/165327_163068620404528_114434808601243_345991_4868 97_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs403.ash2/68185_163068627071194_114434808601243_345992_54037 9_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-snc4/hs1382.snc4/163403_163068637071193_114434808601243_345993_7709 578_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs764.ash1/165500_163068643737859_114434808601243_345994_1956 275_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-ak-snc6/hs031.snc6/166187_163068650404525_114434808601243_345995_6097 494_n.jpg

Jason

[Bellvis]

Had a blast in the desert today with the Psycho Squad #52 Race Truck testing for the Parker 425.....


http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5110-1.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5114.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5118.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5151.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5179.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5199-1.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5209.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5215.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5221.jpg

http://i173.photobucket.com/albums/w56/jonbell1982/PYSCHO%20SQUAD%2052/IMG_5219-1.jpg

[jason@gmachine]

those are some really cool pics man! she is lookin good!

[Bellvis]

those are some really cool pics man! she is lookin good!

Thanks Jason, had a great time!
Hope to make it out again to see what this animal can really do!

[Beebe]

Great pics Jon!!!

[Forty1Racing]

Always love seeing this machine in the desert.
everything looks great.

[reverhart]

Finally Class 8 for Parker, #8052
Turbo-diesels are now allowed in class 8000, and 8100 in BITD

10 8 trucks in Parker including us at least!! awsome!!!!! now if we can just finish the race

[Bellvis]

Great pics Jon!!!

Thanks Bebe!
Miss ya!

[matt_helton]

Blitzkrieg 8 lug race hubs??!! ;) ha yeah i love this truck, so rad!! go get em at parker guys!