custom coil springs

[Kritter]

With 1/2" preload on just the 800 at full extension it still sits a little low. Maybe 1-1.5" wheel travel too low. I can get a meaurement on how much the spring is compressed tonight or tomorrow. but i think i estimated the sprung weight up around 1700lbs on each front corner.

If at full extension you have the bottom spring preloaded with the cross over nuts 1/2", why do you even have a top spring on? If the crossover nuts are NOT preloading the shocks at full extension then tehre is no way the top spring is preloaded more then .8" unless it is not a 500lb/in spring. Again the information provided does not add up.

My expereince with a long arm HD with a bad motion ratio is that a single rate 920lb/in spring is a start...I had the luxury of using a 4" coilover with a 4.625 ID spring.

The number 1 reason I dont tell anybody to run king springs is becuase they dont even know what they are selling you. They know a lenght and a rate but do NOT know the travel numbers which is bad business for company who claims to have the best designs in offroad racing. The number 1 reason people HAVE to buy some king spring is becuase most spring companies do not make a lot of the funky lenghts and rates King makes for this niche market we call offroad.

King pull your head out and list the specs of ALL of your springs and do the offroad community using them and your sales guys a favor so they dont make ignorant assumptions or worse yet hand over an eibach catalog and say this is what we use but eibach only makes a few of our springs. Eibach material is none the same to any other spring mfg'er so you cant use their catalog.

Sorry for the tangent but people dont understand the important information needed to set up a vehicle when it comes to springs and Eibach is the only spring MFG'r who doesnt have their head up their ass.

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[partybarge_pilot]

Truck is bumped and strapped at 19.5" measured from the hub face. Shock travel is 9.5" on a 10" shock. It was 9.25" when it left but the straps have stretched a little so the shocks are very close to full extension at droop now.

Yow, that's a lot of motion ratio on a heavy truck. The little uniballs on those 2.5's will be your next problem. Go rally car style and run dual coilovers............

[socalmoto]

If at full extension you have the bottom spring preloaded with the cross over nuts 1/2", why do you even have a top spring on? If the crossover nuts are NOT preloading the shocks at full extension then tehre is no way the top spring is preloaded more then .8" unless it is not a 500lb/in spring. Again the information provided does not add up.

With the 800s being under preload i just pulled the top coil thinking i could find a longer main spring somewhat easily and i didnt want to have to hammer the dual sliders up and down if the top coil wasnt doing anything.

The number 1 reason people HAVE to buy some king spring is becuase most spring companies do not make a lot of the funky lenghts and rates King makes for this niche market we call offroad.

Or maybe they are the ONLY ones that dont have their head up their a$$ because they actually offer a spring a TON of people want. 90% of the trucks i work on have a 10-12" c/o up front and use the shorty 500 rate.

Yow, that's a lot of motion ratio on a heavy truck. The little uniballs on those 2.5's will be your next problem. Go rally car style and run dual coilovers............

Yes there will be issues down the road haha. Dual coilover wont really be an option as the 2.5s cannot put out even close to enough valving. The c/o has a 15 stack and bypass has a 20 stack and the truck blows through it. When i installed this kit I made my own uca to make sure there was enough space for some 3.5 bypasses up front to help with damping. Im putting on some 3.0s today or tomorrow when some shock shafts arrive with welded lower loops, so well see if those are close enough...but he got them cheap from another friend so its worth a shot.

I may be able to fit just a single 3.0 c/o in there....no bypass. With kings ibp needle, think itll put out enough damping? of course after swapping all these shocks around, just paying $900 for some custom coils and calling it a day doesnt seem that bad. He can get $400 out of the springs he has now, so just another $500 right? hahaha

[partybarge_pilot]

Get the airshock shafted BP's..............

[Stephen]

Why put the big shaft in the bypass instead of the coilover? Adding air spring seems like a good idea.

[Ramsey_ElWardani]

Why put the big shaft in the bypass instead of the coilover? Adding air spring seems like a good idea.

It will never work.


Well maybe.


Ok, it will.


Good suggestion Steve.

[Kritter]

Or maybe they are the ONLY ones that dont have their head up their a$$ because they actually offer a spring a TON of people want. 90% of the trucks i work on have a 10-12" c/o up front and use the shorty 500 rate.

The end users are un informed and dont care about spring travel...they are the ultimate customer as they dont care about details!

As far as a custom coil...buckling/bowing will be an issue with a longer spring. 19.5 is already pushing it. Sounds like you are throwing money and hoping it sticks somewhere. Throw money at changing the motion ratio and using off the shelf coils.

[partybarge_pilot]

Throw money at changing the motion ratio and using off the shelf coils.

This would be My first choice as well..........

[socalmoto]

Get the airshock shafted BP's..............

Why put the big shaft in the bypass instead of the coilover? Adding air spring seems like a good idea.

I actually REALLY like this idea if it can work. Ill talk with kellan at king about it tomorrow to see what shaft sizes i can get and what pressures i can run then ill crunch some numbers and see what i get. If the air shocks can help lift 2-3" at ride height then the dual rate springs we have should still work.

As far as a custom coil...buckling/bowing will be an issue with a longer spring. 19.5 is already pushing it. Sounds like you are throwing money and hoping it sticks somewhere. Throw money at changing the motion ratio and using off the shelf coils.

seriously....first post

and i realize the coils will buckle, so I'm going to make a slider on the shock to help with that.

And im not just throwing money. The calcs ive done show that a 800-900 lb spring should give a decent ride frequency right around where my a-arm ranger is at....and i like the way my ranger rides. With a coil 24" tall, around .85" wire, and 12-13 coils we should have enough lift and travel. I do like the frequency im getting with the 900lb a little more then the 800. Its not that big of a difference with a low motion ratio, but if we get custom coils, ill most likely go with a 900. With a slider on the end of the shock body (like the ones king offer) to help with buckling there shouldnt be too much of an issue since about half the shock will be compressed before the coil starts to buckle meaning 2/3 of the coil will have internal support.

Motion ratio change will be one of the last options since the owners of a few diesel prerunners around here are dogging for the best.....mostly meaning they want more travel regardless haha. I try everything i can to do what the customer wants as long as its reseanable and I can make it work properly. I havent exhausted my options yet for keeping these travel numbers, so i will try until i beat the dead horse. Changing the MR and limiting his travel would make his truck like all the other lt duramaxs......and who wants that?

[Ramsey_ElWardani]

I actually REALLY like this idea if it can work. Ill talk with kellan at king about it tomorrow to see what shaft sizes i can get and what pressures i can run then ill crunch some numbers and see what i get. If the air shocks can help lift 2-3" at ride height then the dual rate springs we have should still work.

If you are serious about this PM me as I can supply you with some great tools to use in setting it up. I have been using Air/Coil overs for years with great results.