[quote="twebb"]
The cross looks pretty good, but I'm suprised that you could not get better than a 40 pounds spread differential on fronts and the rears.
The biggest problem I've found in messing with Cobra's car is sticktion. It's really is amazing how much exists in these cars. Perhaps it's the geometry...maybe someone with more knowledge can chime in.
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there are different schools of thought in setting up corners. basically overall left/right balance, like the overall front/rear balance, can only be changed by moving things in the car. what one has control over is crossweights and left/right balance at one end (at the expense of the other end). i prefer to set it up so that corner weights are equal and instead of equalizing front weights i try for a similar front/rear balance PER SIDE.
sticktion seems to come at least in part from the bellcranks. even though the brammo ones have needle bearings any off-axis forces are taken up by just a thrust washer so there's a bit of sticktioin in that. i use tapered roller bearings in the dp1 for example, other designs have used nadella (?) combo needle/thrust bearings.
but ultimately unless setup is grossly off the differences are pretty subtle on a road-going car. it would need bearings instead of bushings in arm pivots and a good deal more chassis stiffness before the last little bit of setup makes a real difference - in my opinion anyway. for what the car is i think i've got it close enough.
what my atom does need is a lot more rear tire - it's very easy to powerslide it around even with partial throttle. fun, but not the fastest way around a corner