CSX3170 2019 updates

[Cobra #3170]

[quote=Jdata;1462684]Great upgrade evolution! So you're finding that you need to raise the rear and play with rebound. Is their a rear ARB?

Sounds for that course, you have some in time on the table[/QUOT

I am sure everyone is sick of this thread by now but I will give you a short explanation on our tuning logic.
First of all, of course it has a rear anti roll bar and it is adjustable as is the front bar. We use a very small rear bar because too much rear bar will lift the inside tire and hurt corner exit. The rear bar on this car is a very small % of roll stiffness so it has a small effect on balance. We use it for fine tuning only. The desirable thing to do is increase grip on the end of the car that is not working, In this case our front bar was full soft already and changing springs between rounds is not something we do (although we have in the past). The fastest way to change static balance is to change the roll axis which is what we did. Dynamic balance is done through shock adjustments. To illustrate what we achieved through those two changes we were getting a peak of 1.17 lateral G, after balancing the car our peak was 1.34 which resulted in a big time gain.
The car has less Ackermann now so we had to compensate with the other changes to get it re-balanced. We could have changed toe but took the easy route and raised the rear for mid corner and increased front rebound to improve exit front grip. If we had more time Scott wanted to try a combination of rear and front rebound changes but the transmission noise ended our day. On the subject of rear bar, you would need a Detroit locker or spool to use a large rear bar and the negatives of those approaches out weigh any advantage in my opinion.