ecosse
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| posted on 17/8/06 at 08:58 PM |
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TRE angle on top WB
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!
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907
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| posted on 18/8/06 at 06:44 AM |
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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
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ecosse
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| posted on 18/8/06 at 08:27 AM |
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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 
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907
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| posted on 18/8/06 at 10:19 AM |
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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
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Delinquent
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| posted on 18/8/06 at 02:09 PM |
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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?
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ecosse
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| posted on 18/8/06 at 03:37 PM |
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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
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Mansfield
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| posted on 18/8/06 at 06:49 PM |
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This is a good photograhic example of what the angle is for.
http://locostbuilders.co.uk/photos.php?action=showphoto&photo=IMG_9825.jpg
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Mansfield
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| posted on 18/8/06 at 06:52 PM |
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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...
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JoelP
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| posted on 18/8/06 at 07:08 PM |
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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.
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907
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| posted on 18/8/06 at 07:30 PM |
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So it's angled for Sierra, straight for Cortina???
You learn something every day.
Paul G
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ecosse
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| posted on 18/8/06 at 08:21 PM |
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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
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