[Derka]

Thanks for the feedback so far guys.

Here is the setup I ran last night.

After the first heat, we changed to a AE Yellow (Softer) front spring, AE Blue Green rear, moved the lipo full rearward, moved the shocks back to the rear of the rear arm, removed a 48g under lipo weight and also changed the rear tyres to a Mini Spike in yellow.

Even after the changes, it was still pushing on the wood sections on throttle, off throttle but the rear would slide with some provoking, which it wasn't before which I think was the changed from Cactus to Mini Spike. If I brake while mid corner, it will rotate nicely and the setup I initially started with trying to get as much weight forward as possible to give more front grip, thats my understanding of how it might work, but we decided to try something else by softening the springs and moving the weight back and like I say, the only thing that made a slight improvement was Mini Spike rears, which I think is is basically removing rear grip, laterally, and forward.

CJM;

1. front tyres. What compound are you using? What profile? How wide are your front rims? Are the sidewalls stretched & more rounded? Running 2wd tyres on 4wd rims will stretch the carcass & limit the contact patch. Tyres are always the first thing to check.
Yellow, Slim, front Mini pin, 2wd wheel. Rears, Yellow Mini pin, Cactus and Mini Spike.


2. front camber. Sometimes less is more - as in, try running 0 - 1 degree for a flatter contact profile. Also investigate the effect of the turnbuckle inboard mounting points, as this changes the rate of camber change (a longer link will result in little change, shorter = more camber under load)
Will try reducing front camber to -1.

3. where are you encountering the understeer? Corner entry? Mid corner on power? Corner exit? Are you braking at all? braking in the right place forces weight to transfer to the front, which will increase bite.
Carpet sections the car appears fine. Understeer happens on corner entry, mid and exit. Coasting and on power, unless I provoke it with a load of throttle to bring the rear round. Braking will rotate the car but the corners are tight so I basically come to a stop when touching the brakes.

4. front toe - are you running toe in, neutral, or toe out? Toe out will increase steering on corner entry but may make your car 'darty'.
Zero toe. I might try some Toe out.

5. wishbone binding? - remove or disconnect the front shocks & make sure the suspension moves freely, both sides.
This is a new kit, but I have changed springs 2-3 times and everything is free.

6. Diff: Ball or gear? And if gear, how heavy is the oil? A very stiff diff will cause understeer on entry, since a tight rear axle limits the rate of rotation, especially using mini pins on carpet.
Geared Diff, 5000 cst oil.