Improving downforce on a 90s ranger

partybarge_pilot

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If your going for ground effects you need to be a lot closer to the ground.

Then you have low spot in the tunnel under the vehicle that produces a low pressure/high velocity zone. It exits out the back underneath.

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jon coleman

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Any recommendations on where to source bushings, etc? The front end has been redone with poly bushings by the previous owner.

So if I did a bed delete, Is this the tunnel? I had something like that on my initial design but thought it looked stupid. Where should the air exit?
day motorsports is good,others, afco has some good leaf stuff
 

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jon coleman

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do Not go for Any down force concepts, make the underside smooth, get rear end out of airflow, , a nice flat bottom w rear diffuser , like the new mustangs have.
 

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michael.gonzalez

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If blue bar is long enough, you might be able to keep shock mounts where they are.

Using a ruffstuff 3/8" diff cover would be a good starting point.

I don't see any reason not to use heims for the watts linkage rods.

 

Bricoop

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If blue bar is long enough, you might be able to keep shock mounts where they are.

Using a ruffstuff 3/8" diff cover would be a good starting point.

I don't see any reason not to use heims for the watts linkage rods.

Thanks. I’ll hang some strings to see. It might work, TBD.
 

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jon coleman

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just remember road racing is Not off road!, half the size hard ware is plenty strong, ( unless you race Holtville, haha), when i worked at Schlossnagle's, Bill would always remind me ' dont prep like its for the bk1'!
 

pontoontodd

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I would focus on slamming that thing. What does it have, 8-10" of ground clearance? If you could get that down to 3" it would be a huge improvement in drag and handling. Frame over conversion maybe?
I would lean towards a bed cover rather than a hatchback/fastback but you could try both. Rear spoiler could definitely help. Bed delete might wind up adding a lot of drag and hurt your weight bias.
Smooth underbody would help, especially if you keep it that high.
I doubt a diffuser will do much unless you get it low to the ground and the underbody smooth. Also, you should look it up but usually you can't run too much diffuser angle or the flow becomes turbulent and it doesn't work.
With aero, especially a turbulent box like this, testing is key. Things you think will work don't always and vice versa. So try to figure out some way to measure ride height at speed on a flat straight road/course so you can estimate front and rear downforce.
 

Fifty

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When i started on my land speed build, I was lucky to meet and be helped with a guy who works for sauber.
A trick he gave me was to find a model of my car, and build a water tank “wind tunnel” using bubbles and a back light... or a smoke wind tunnel.
There are a ton of videos on YouTube showing how to make them etc.

anyways, build your model like your truck, make mini mock up versions of your aero ideas and test.
 

jon coleman

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naaa, keep truck bed, install spring loaded side, front& rear skirts to seal off truck, & in the bed cut big hole, install a big restaurant type exaust fan hooked up to a 5 hp briggs & stratton, you'll never have to lift all the way around the track!
 

Bricoop

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naaa, keep truck bed, install spring loaded side, front& rear skirts to seal off truck, & in the bed cut big hole, install a big restaurant type exaust fan hooked up to a 5 hp briggs & stratton, you'll never have to lift all the way around the track!
You mean stick 4 of these in bed? 1 hp and 2800 cfm each ;)
5AD468D7-53FE-41E3-BE77-DD8B544A398B.jpeg
 
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