Board logo

TRE angle on top WB
ecosse - 17/8/06 at 08:58 PM

Can anyone tell me why the top wishbone TRE tube is angled up on the MK wishbones?
I was sure I'd seen a thread talking about but can't find it now.
Presumably there is a good reason for it, but is it one I should be copying, or is the book design still the route to go?

Cheers
Alex
PS
Just about to start welding and find another reason to pause!

907 - 18/8/06 at 06:44 AM

Hi,

I assume that its so the ball doesn't run out of movement within the socket in full droop,
i.e. airborne over hump back bridges.

Maybe they use a shock with more travel?
Or so you can run more neg camber?

If making your own bones I'd be more concerned with getting the castor offset right.
I had to remake mine.


Paul G

ecosse - 18/8/06 at 08:27 AM

I did wonder if it was to do with using sierra uprights rather than cortina ones(mine). But if there is no major reason to build them this way I will go the traditional route.

Cheers
Alex
PS
I'm making my top bones with rosejoints to give me some extra adjustment for camber/castor

907 - 18/8/06 at 10:19 AM

quote:
Originally posted by ecosse
I did wonder if it was to do with using sierra uprights rather than cortina ones(mine). But if there is no major reason to build them this way I will go the traditional route.

Cheers
Alex
PS
I'm making my top bones with rosejoints to give me some extra adjustment for camber/castor




Could well be. I have 'Tina ones myself.

I think even with rose joints I'd still go for the 20mm offset.
A good chance then that after adjustment you will end up near central.
Nothing worse IMHO than adjusted fully to one side. It looks like a **** up.

Paul G

Delinquent - 18/8/06 at 02:09 PM

not sure what you mean by TRE - but you can angle the top wishbone longitudinally to give anti-dive characteristics, could that be what you mean?

ecosse - 18/8/06 at 03:37 PM

If you look at an MK wishbone from the front, the threaded part that the the track rod end screws into is angled up rather than on the same centre line as the bone itself.
I just wondered why, in case it was a better way to do it

Cheers

Alex

Mansfield - 18/8/06 at 06:49 PM

This is a good photograhic example of what the angle is for.

http://locostbuilders.co.uk/photos.php?action=showphoto&photo=IMG_9825.jpg

Mansfield - 18/8/06 at 06:52 PM

Without the angle, I think you can encounter problems at full droop.

There are pictures of this, but I cant find any. If its good enough for MK etc...

JoelP - 18/8/06 at 07:08 PM

yup, by keeping it at 90 degrees to the hole, you ensure maximum movement. Not a problem really if you dont mind using the shocker to limit droop.

907 - 18/8/06 at 07:30 PM

So it's angled for Sierra, straight for Cortina???

You learn something every day.

Paul G

ecosse - 18/8/06 at 08:21 PM

quote:
Originally posted by 907
So it's angled for Sierra, straight for Cortina???

You learn something every day.

Paul G


You do indeed, I'll sleep at night now

Cheers

Alex