Best Alignment for Four Wheels Must Touch Car

[CTDerbyDad]

I looked and couldn't find this addressed.

Our local rules require that all four wheels must touch and stock wheelbase. The car is rolled on a super flat surface and all four wheels must touch.

What is the best alignment setup for this?

 

[TRE]

if you have the silver bullet you can drill the slots so you can get the axles all the same height..I would narrow both sides of the front so when the car wiggles it wont go far

 

[CTDerbyDad]

How much narrower would you recommend?

So, no camber or toe-in on any axle?

 

[Crash Enburn]

Is it all four must touch, or is it all four must run flat? Those are two completely different requirements and setups.

 

[CTDerbyDad]

The rules just say all four tires must touch. There is no margin of error, however, as the cars get rolled on a flat piece of glass. If a tire is even slightly off, it shows in tech.

 

[BulldogRacing]

My son and I had to build a car like this. We built it with 3 wheels, got it tuned to the correct steer with 3 wheels, then the 4th wheel was installed with the axle bent just like the DFW axle and we made it touch as little as possible and steered it the same direction as the DFW. It just slightly touched, and if they complain at tech in just use a flat head screw driver and turn it a tad until they are happy, then collect your trophy!

 

[derbychip]

My son and I had to build a car like this. We built it with 3 wheels, got it tuned to the correct steer with 3 wheels, then the 4th wheel was installed with the axle bent just like the DFW axle and we made it touch as little as possible and steered it the same direction as the DFW. It just slightly touched, and if they complain at tech in just use a flat head screw driver and turn it a tad until they are happy, then collect your trophy!

 

[bracketracer]

My son and I had to build a car like this. We built it with 3 wheels, got it tuned to the correct steer with 3 wheels, then the 4th wheel was installed with the axle bent just like the DFW axle and we made it touch as little as possible and steered it the same direction as the DFW. It just slightly touched, and if they complain at tech in just use a flat head screw driver and turn it a tad until they are happy, then collect your trophy!

+1 on this. Same thing we did when we had to have four touch. Works good!

 

[Pacfanweb]

Yep, every year this is what we do. Make the 4th wheel *just barely* touch. And we lube it up so it slides if it does touch. Then steer with the other front wheel just like in a 3 wheeler.