XRAY - Model racing cars

Hello,

I've kinda figured out what changing the shims on the inside camber link does to affect my car, but I haven't quite been able to tell what the difference in the position of the inside link does. There are 3 mounting spots, can someone explain what affect they have?

Thanks!

Luke

from what i can make out long links let the car roll deeper and the short links less so
i run shortlinks all the time as im unsure of the handling change,but as my car is working well its not something that i have changed,so i guess in low grip you want the car to roll more,and in med/high you want it to roll less

Did a bunch of my own 'math' last on night and came to a conclusion, can anyone confirm my thoughts?

As greyhead said, longer links allow the car to roll more, but if I figured it right would give less dynamic camber. Short links would roll less but have more dynamic camber.

Am I on the right track?

Cheers

Luke

Raise upper link on the outside: the roll center is raised.
Raise upper link on the inside: the roll center is lowered.
Raise the link on both points: the roll center is lowered, albeit slightly.

Longer upper link: the roll center is lowered. The roll center itself will go lower throughout the roll. Whereas, when the upper link is shortened, the height of the roll center has less of a change.

Roll center affects and is affected by many other areas of the car such as camber, shocks, shock springs, camber gain etc. It is therefore important to understand that this change in set-up cannot be considered as an effect of its own.

The rule of thumb:

Higher front roll center: Decreases chassis roll at the front end of the car. It will make the car under steer off-power. The car will have better on-power steering as less weight is transferred to the rear wheels. Will make the front tires overheat less. The car will have a quicker initial response.

Lower front roll center: Increases chassis roll at the front end of the car. It will make the car have less on-power steering. The turn-in will be better (corner entry steering) off power. The car will absorb bumps better. The car will have a slower initial response.

Higher rear roll center: Decreases chassis roll at the rear end of the car. On-power steering will be decreased. Off-power steering (turn-in) will be increased as more weight will stay on the front wheels at corner entry.

Lower rear roll center: Increases the chassis roll at the rear end of the car. The on-power steering will be increased. The corner entry steering will however be decreased.

Great man thanks! So the 3 mounting positions on the inside link are only used to change the length of the link and the actual positions (forward or reverse) don't affect it?