XRAY - Model racing cars

HI,
im also having trouble with my handling. I keep having oversteering? i have tried many things, but when i changed the front diffs to a spool instead of one-way the car started to handle alot better, the tail wasn't loose anymore. Could u guys help me out on this problem with oversteering with a one-way diff? If not then i could always stick to the spool

Sounds like a case of rear end over-rotation with too much weight transfer to the outside wheel. I've been noticing from my own experience and the setup sheets of others that the FK05 seems to respond better to a lower rear roll center with stiffer springs, rather than a medium to high rear roll center with softer springs. This is probably not the case for all, but certainly information worth noting.

Would you mind posting your setup sheet, post changes, and letting us know the details of what settings you changed to arrive there? Thanks!

Does adding a rear swaybar reduce rear overload,creating more side bite or is this the wrong approach? springs only?

Increasing the toe in won't stop the outsides to wear increased compared to inside, the reason this happens is because your wheels are to straight, or even have positive camber. You could try using 1,5 deg camber (neg). I'm racing with it myself with a FK04 and have completely straight worn tires.

Using swaybars does indeed help, I tested with it myself and my total time @ the end of heat was 4 seconds faster than my personal best.

You can check my setup sheet (search for 6th round of dutch nationals 2005)