[David Pozzi]

Some time ago we reduced roll to a tolerable point by adding the rear bar, but then Penny wouldn't put the power down very well, and what was neutral handling at small throttle openings, was a tail wagger when on the gas coming out of a turn. Pulling the rear bar and adding rear shock resistance helped forward traction tremendously. But now it's rolling too much and we never did optimise the front end geometry. Neg camber is conservative at 1.5 or 2 deg and we never have measured front camber gain or roll center. There are options to increase neg camber gain.

The front end just can't handle the added load of no rear bar. - Hammering the gas helps rotate the car by unweighting the front a little, and giving the rear tires two jobs, 1. cornering, 2. accelerating, this helps reduce rear traction to the point where the car is able to turn in a balanced mode, but at some point you have to let off the gas and if you are not finished turning, the car will push. Nate did a heck of a job managing this and getting the car to turn under very heavy throttle application.

Lifting the inside front wheel means the front is much stiffer in roll than the rear, - and overloaded. The rear shocks are giving you just enough added roll stiffness to the rear to allow you to turn the car into the corner, but once roll is over the rear shocks are done helping and it's back to understeer mode and the car goes back to understeer.

An easy thing to do is raise the rear watts to get the rear to handle more of the cornering load and reduce roll angle. It's not a big help however but a step in the right direction. I'd like to try and keep the rear bar disconnected and try further shock adjustments, but the rear bar may need to be used at a soft setting to help the roll issue.

I'd like to see the front lift more when on the gas, it' doesn't seem to now and I think it's hurting rear tire plant and traction. I need to see some pics to verify this. I don't recall ever seeing a pic of Penny with the front end elevated under power.

The front shocks have loads of adjustment we haven't even tried yet, maybe a softer rebound setting. As horsepower goes up, things have to change to try and make use of it.
David