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Front wishbone dimensions
Mix - 7/4/04 at 09:55 AM

I'm in the process of making my 'book' front upper bones. I'm aware of the mistakes in the book re castor angle and will correct them during construction.
My question concerns the distance that the ball joint is screwed out of the wishbone. In the book photos it seem to me that the wishbone could be made longer and thus reduce the extension of the ball joint.
I would appreciate your views as to how much camber adjustment is desirable and at what angle from perpendicular. How much extension have book built drivers got once the car has been set up ? And finally if I've missed the bleedin obvious put me right before I waste too much time.

Thanks Mick

jcduroc - 7/4/04 at 02:22 PM

quote:
Originally posted by Mix
... In the book photos it seem to me that the wishbone could be made longer and thus reduce the extension of the ball joint.
I would appreciate your views as to how much camber adjustment is desirable and at what angle from perpendicular. How much extension have book built drivers got once the car has been set up ? And finally if I've missed the bleedin obvious put me right before I waste too much time.
Thanks Mick


9 mm travel, with 1.5 bolt pitch, will give you more than you need for camber adjustment.
I'm making them to put 0º camber in static position + 9 mm for adjustment (negative camber).

Cheers
João

type 907 - 7/4/04 at 03:41 PM

Hi Mick,

If I made my wishbones again
I would make them bigger by 8mm.

I have 18mm of spare thread and the end of the ball joint is 8mm short of the end of the threaded tube.
If it was to finish flush it would look better.

I did use a 16mm nut, bored & threaded
M18, because an M18 nut looks huge.

Paul G Rescued attachment top wishbone asy s.jpg
Rescued attachment top wishbone asy s.jpg

James - 7/4/04 at 04:13 PM

Lovely looking wishbone welds! Preumably you TIG'd them? I'm guessing so as the chassis is stainless!

James

type 907 - 7/4/04 at 04:31 PM

My Mother-in-law sat in the car the other
day........
AND NOTHING BROKE.....

so I suppose they must be ok

Paul G

turbo time - 15/4/04 at 07:51 PM

^ Haha, the mother-in-law chassis test.


About the book dimensions, I ordered my second edition of it the other day, but haven't received it yet. Is anyone aware if the measurements were corrected for the second version or not?

James - 15/4/04 at 10:56 PM

Turbo,

They're wrong! Same crap as first time round! Just make sure the castor is 22mm and you'll be ok.

James

Mark Allanson - 16/4/04 at 07:35 PM

My wishbone brackets are symetrical, this is my redesign for the upper bones Rescued attachment Wisbone Modification.JPG
Rescued attachment Wisbone Modification.JPG