Strong bottom wishbone material ?
richard - 26/4/10 at 09:32 PM
Gents i'm after making another set of bottom wishbones for my book chassis locost after the fears of them bending and want to know of tried and
tested materials designs / alterations.
Have tried a search but unable to find what i wanted.
Have seen the the MK type egg shaped tube, but not sure if just look good and need to make my own anyways. Would welcome some advise.
cheers Richard.
RichardK - 26/4/10 at 09:46 PM
Just out of curiosit, what makes you think yours are going to bend?
Cheers
Rich
Steve Hignett - 26/4/10 at 09:50 PM
What material are you using at the moment?
austin man - 26/4/10 at 10:17 PM
Mine bent and they where to book specification I have a set of the MK oval tube wishbones now and no sign of movement, wish I had gone this way from
the start. The book wishbones where designed around a kent engine most people ar fitting pinto's zetecs etc which are significantly heavier and
harder springs thats why I think the wishbones fail.
mark chandler - 27/4/10 at 06:57 AM
I chopped up 2 x panhard rod drag links from a landrover for mine, good thick quality metal.
Any decent 4x4 repairer will have some for pennies as they change the whole thing for new rods when the TRE's are worn out, saves fighting with
rust!
You want the rear ones from a 90.
Regards Mark
mangogrooveworkshop - 27/4/10 at 08:10 AM
tesco shopping trolley provides all the oval you will ever need and the price is free
dinosaurjuice - 27/4/10 at 08:16 AM
quote:
Originally posted by mangogrooveworkshop
tesco shopping trolley provides all the oval you will ever need and the price is free
some stores charge a £1. but its still good value.
James - 27/4/10 at 10:27 AM
quote:
Originally posted by mangogrooveworkshop
tesco shopping trolley provides all the oval you will ever need and the price is free
I'm sure you're joking but is it a high enough grade of seamless steel? It's going to be crap metal isn't it?
Oh, and they cost Tescos £1500 a pop but what the hell- they can afford it! 
Cheers,
James
richard - 27/4/10 at 05:24 PM
I seen the previous posts about them bending even though ours are book dimensions.
I understand as said this can be due to the heaveir engines we now tend to use, maybe not using seamless tubing.I used 16 gauge tube .
Ive also started to do some track days and considering the extra forces this exerts on the bones.
Shame as i spent ages getting weld fillets i could be proud off and then was the first bit of chrone i ever had on a car.
Does anyone know what the 'Racers' use. ?
Rich
TimC - 29/4/10 at 12:36 PM
I looked at this long and hard, considered all sorts of stuff from proper aero material through flat oval to round. In the end we've gone for
22.2mm x 2.03mm round CDS. This is on a widetrack car that will ride a lot of curbs so may be overkill for your purpose.
Its not as aero efficient, but as an aero expert keeps reminding me, the air will only hit the rear arch anyway.
Badger_McLetcher - 30/4/10 at 12:48 AM
If you want to modify existing wishbones a sure fire way to prevent bending would be to weld some kind of reinforcement on top.
Either extend the existing reinforcement and make it out of slightly thicker material, may weld a mirror on the other side?
Or just weld a fin to the top or bottom of each tube made out of some relatively thick steel. However that would probably look shite.
mangogrooveworkshop - 30/4/10 at 07:32 AM
quote:
Originally posted by James
quote:
Originally posted by mangogrooveworkshop
tesco shopping trolley provides all the oval you will ever need and the price is free
I'm sure you're joking but is it a high enough grade of seamless steel? It's going to be crap metal isn't it?
Oh, and they cost Tescos £1500 a pop but what the hell- they can afford it!
They used to make them up in Glenrothes and we used to raid the scrap bins.
the steel was top notch stuff as these trolleys are expected to take a real beating for ten years or more
Cheers,
James