Technical Do all seis have ARB?

[fingers99]

Ive got a stiffer arb on and its less understeery than a standard one

Well, maybe. FWD cars do do strange things (sometimes) -- Minis are notoriously strange.

But conventional wisdom is that to kill understeer fit a rear ARB or bin the front one. More precisely, it's a question of the ratio between the ARBs.

This seems born out by the experience of folk who've run Centos in competition. You've got to ask (if fitting a thicker front ARB reduces understeer) what grade of toluene the guys in the drawing office at FIAT were sniffing when they decided to homologate a rear ARB. Did they really want to increase understeer?

 

[Mytheroo]

interesting thread.

I just swapped my uprated suspension from my old Sei 899 sx (no ARB) to my Sei sporting, and I was disappointed that the turn in wasn't as good as the 899.

I had also widened the track by 6mm so I was thinking that was the reason, but now I'm wondering about taking the ARB off. I'll try the track setting first though, as it's a bit easier

 

[fingers99]

Widening the front track should improve turn in (but will probably increase roll). Widening the rear will have a negative effect on turn in.

But it's a complex issue, affected by lots of factors. And back to back testing against the clock is probably the most revealing way of discovering anything.