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castor angle locost
kit Car KIDDA - 15/12/05 at 09:19 PM

G'Day, nearly finished building the chassis for my ZX9R twin engine locost, can anybody tell me what the castor angle should be?Thanx mate P.S is there any more mistakes in the ron champion book Thanx


big_wasa - 15/12/05 at 10:23 PM

Have you atached the brackets for the bones yet ?

Book dimensions are going to give you just over 2 deg neg castor. You need to be aiming for over 5 . Im working to 6 deg neg castor.

Two ways to do it imho .Either drag the top bones back 15mm or remake the top bones to give same efect. First option gives alsorts of grief


See my posts link Ive now had to shift FU1+2 to clear stearing coloum shaft.


big_wasa - 15/12/05 at 10:35 PM

And yeh there is some debate on sterring rack position

Tried to post another pic but it wouldnt let me


britishtrident - 15/12/05 at 10:38 PM

Anything over 5 degrees POSATIVE castor.

Ie the virtual king pin should be angled to put the upper ball joint centre line 25mm behind the lower one.

Important both sides are as equal as possible or the steering will pull to one side



[Edited on 15/12/05 by britishtrident]


big_wasa - 15/12/05 at 10:42 PM

quote:
Originally posted by britishtrident
Anything over 5 degrees POSATIVE castor.

[Edited on 15/12/05 by britishtrident]


Thanks I stand corrected


kit Car KIDDA - 15/12/05 at 10:53 PM

quote:
Originally posted by big_wasa
Have you atached the brackets for the bones yet ?

Book dimensions are going to give you just over 2 deg neg castor. You need to be aiming for over 5 . Im working to 6 deg neg castor.
cheers mate how about how my second engine is going to drive my wheels
Two ways to do it imho .Either drag the top bones back 15mm or remake the top bones to give same efect. First option gives alsorts of grief


See my posts link Ive now had to shift FU1+2 to clear stearing coloum shaft.