PAS/ Non PAS & Castor

[Chassis 33]

Do PAS car run different amounts of castor to manual cars?
Regards
Iain

[Red Cabbage]

If they did there would need to be different top or bottom wishbones for each wouldn't there?

However as trackcar pointed out the diameter of the front wheel/tyre combination affects the trail that the castor angle creates so both need to be taken into consideration.

[Chassis 33]

IIRC There are two different top ball joint spacers one that's approx 6mm and a pair of 3mm, thus allowing the top ball joint to move backwards or forwards depending on where the spacers sit. What I don't know is whether this is an early/late thing, a PAS/manual thing, or a whatever TVR had in stock at the time thing!

Regards
Iain

[Red Cabbage]

Chassis 33 said:

IIRC There are two different top ball joint spacers one that's approx 6mm and a pair of 3mm, thus allowing the top ball joint to move backwards or forwards depending on where the spacers sit. What I don't know is whether this is an early/late thing, a PAS/manual thing, or a whatever TVR had in stock at the time thing!

Regards
Iain

It is an early/late thing for the one piece and two piece wishbones and not PAS specific.

[spend]

I would have thought your new wishbones should allow you to set the castor angle quite accurately Iain, and far greater range than the std TVR 'spacing' allows for PAS/nonPAS (I don't recall seeing any different settings BTW)

[Chassis 33]

Indeed Dave, the problem I have is too much choice in the settings to get an initial setting, I'm also going from PAS to manual which threw another spanner in the works. InitiallyI'll be running some vert concervatinve settings and seeing where that gets me, although I'm going to "bench test" a few more radical settings just so I know what changes what.

BTW Does anyone know off the top of their heads what the thread track rod ends have?
Regards
Iain