09-10-2020, 06:39 PM
Q2 ,lots. About twice as much as you think it will need.
When I built my trials car about 20 years ago thinking I had allowed enough later had to fit 1" spacers at the rear to stop tyres rubbing the body away so much and altering the front wing brackets quite a lot to clear the twisting front wheels.
Imagine how much twist will be put into the chassis and axles if say you traversed a heavily rutted track at 45 degrees.
If you can stiffen the chassis and soften the springs the body will last longer.
When I built my trials car about 20 years ago thinking I had allowed enough later had to fit 1" spacers at the rear to stop tyres rubbing the body away so much and altering the front wing brackets quite a lot to clear the twisting front wheels.
Imagine how much twist will be put into the chassis and axles if say you traversed a heavily rutted track at 45 degrees.
If you can stiffen the chassis and soften the springs the body will last longer.