Wheelbase Adjustments

[DaveG28]

Ok, stared this in the Tamiya section but to widen it for maximum best input. What impact does making the following wheelbase changes have (assume the base position is longest wheelbase):

1. Move front arms rearwards to shorten wheelbase

2. Move front hubs rearwards on the arms to shorten wheelbase

3. Move rear arms forwards to shorten wheelbase

4. Move rear hubs forward on rear arms to shorten wheelbase

I'm especially interested in the impact on the nimbleness of the car, and the rear traction under power!

Cheers!

[RogerM]

4wd, 2wd mid motor or 2wd rear motor ... effects will be subtly different for each mate.

[Welshy40]

Originally Posted by DaveG28

Ok, stared this in the Tamiya section but to widen it for maximum best input. What impact does making the following wheelbase changes have (assume the base position is longest wheelbase):

1. Move front arms rearwards to shorten wheelbase
I have done this on both 2WD and 4WD and found that the 4WD responded better. 2WD didn't feel right so ended up going back to the original.

2. Move front hubs rearwards on the arms to shorten wheelbase
4WD this works rather well, and improves the steering response and also keeps the weight in the right place when jumping.

3. Move rear arms forwards to shorten wheelbase
Tried it and found that the simplest solution was to move the rear hub as the wishbones moved forwards and the hub could cause the Uj popping out or grinding on the diff out drive. I ended up filing the inner side of the arms to give a bit more movement on the hubs.

4. Move rear hubs forward on rear arms to shorten wheelbase
I use this on my 2WD more on carpet, as it gives me more turn in on the back, mind you it works better if the toe in is less, and I use 1.5 degrees (no idea why but it works). This makes the back end a bit more loose and stable and aids the steering in and out of corners.

I'm especially interested in the impact on the nimbleness of the car, and the rear traction under power!

Cheers!

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