XRAY - Model racing cars

You could try to run a 1mm or 2mm shorter wheelbase as this will settle the rear down (effectively puts more weight over the rear wheels).

would there be any benefit to lowering rear roll centre only if I feel the issue is oversteer ?

there will be, but from my experiances the car will feel a bit unbalanced, almost as though you have alot stiffer front spring, and too soft a rear one ( it isnt THAT exagerated, but it will give you an idea ). basically i felt with higher front and lower rear the car felt one way in high speed corners and another in slow speed. The wheelbase efects the car pretty much the same in both. You can always try it out , but i noticed lowering both just gave the car more grip overall. How many spacers do you have in the arms for wheelbase now? If 3mm or more of spacers i would go to 1 or 2mm wheelbase and lower rollcenters, but do them seperatly so you can feel the difference. I would try the rollcenters first and the wheelbase after that ( it takes less time to change and there arnt any other adjustments to make after it, with roll center you have to go back and adjust ride height and droop ).

Lowered the roll centres and raced the car for the first time last night.

What a difference, it was like driving another car. the car was a lot more predictable. The floor was very slippy but i still felt in control. I will try new tyres next week and I may change the wheelbase just to see what it feels like.

Thanks to everyone on the forum for their advice. This has been an excellent learning experience for me. I have received advice from N.Ireland, Netherlands, N.America and Scotland

Cam

thats whatwe are here for