Play with the FRONT end of the kart.

You mentioned turn in was bit quick. The power on oversteer you're
experiencing is probably NOT induced by wheel spin, rather by the increase in
speed.
(in other words, during steady state you're AT the edge of your set-up, and
putting your foot in it puts you OVER the edge of your set-up)

Your problem is most likely an over active front end, from too much caster,
or front trac being too wide (almost the same effect) During steady state, the
amount of steering input you've supplied has also cross jacked alot of weight
onto the outside rear, and OFF the inside rear. It's true that the ideal is
to have the inside rear skimming the track, but there IS a fine line.

What I think is happening is this: Steady state OK.....applying
throttle...speed increasing....back end starts to step out....now you're
correcting with
the steering wheel (of course) but too much weight is transferred - too
abruptly (caster effect kicks in) and "yeee-haw" full lock sideways. The whole
process takes place in about a half a second, so it's easy to think that it was
simply the act of stepping on the gas that caused it.

Too test my theory, make a radical change to the front end and see what
happens. Knock each side IN 10mm on the front and / or take caster out (lean
top
of kingpin "forward") You even have the option of lowering your front ride
height, which also has a dramatic effect.

If that doesn't work, I've got other ideas. Good luck!

Brian Kay - T2 RaceKarts


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