XRAY - Model racing cars

What should be the effect of running the QRC (down and in) as opposed to running them (up and in). I am curious what the effect should be on low traction asphalt. Im searching for traction.

Thank you for the info and explanation. I believe I had it the opposite way as you indicated...for example, lowering QRC position actually raises the roll center and vice versa.

My problem is actually two-fold. 1 lack of rear grip & 2 off-power turn-in. i had not thought to loosen the diff. It is tight right now. Just to be sure I understand. I measure droop as above ride height. With this said, I usually run 1.5 above ride height in the front and 2.5 above ride height in the rear. You are saying to try running maybe 2 above ride height in the front to increase rear traction. Is this correct?

One more thing, What do the new new QRC options do and how do they work in theory? Thanks for the info.[/quote]

Hey James,

Yeah, you got it with the Roll Centre.

Yeah, if you are measuring droop over ride height, you should increase this, by maybe 1-2mm. Even more if you need more grip.

I usually change droop up, or down on both the front and rear to keep nice balance.

It will Just increase grip all around the car, not necessarily entering or exiting a corner.

The new Roll Centre Links are 2mm longer than the old ones, and take the mounting position to above the Lower Suspension Pin. This gives less Camber change and increases the roll of the car. Hence, generating more grip. On Most occasions i would use these all around.

Hope this helps.

Ryan.