Poorscousertommy
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| posted on 9/1/12 at 02:47 PM |
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Indt R: Can't assemble rear carrier thingy!!
To the learned massive.. Another 'engineering problem' I've stumbled across during chassis assembly..
I am looking to assemble the hub carrier wossit (at least thats what I think its called  ) to the rear lower wishbone, and the phrase 'square
peg, round hole' springs to mind..
The carrier is 130mm across, while the distance between of the crush tubes is only 124mm.. If I make the crush tubes flush, then I only gain 1.5mm
(125.5).. This seems like an excessive amount for me to 'ease in' with a rubber hammer!
See photo (if it works).. And yes, i know its upside down, photo for illustration only!
Thanks as ever folks - please tell me I am just being dim!
Mark
[Edited on 9/1/12 by Poorscousertommy]
[Edited on 9/1/12 by Poorscousertommy]
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loggyboy
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| posted on 9/1/12 at 03:01 PM |
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just copy and paste the PG code when doing pics from the album
 
it wont fit!!
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Poorscousertommy
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| posted on 9/1/12 at 03:03 PM |
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Cheers loggyboy, I WILL get there in the end!
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mikeb
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| posted on 9/1/12 at 03:06 PM |
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I'm going to guess this is fairly common as certainly I've had some wishbones where the spacing isn't quite right on my first build,
on my second no problems.
Think they tend to pull in when cooling if removed from the jig after welding etc.
I'd take it up with the supplier but you could probably get them to fit but then I guess the joints will be stressed.
M
[Edited on 9/1/12 by mikeb]
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loggyboy
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| posted on 9/1/12 at 03:16 PM |
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Crush tubes should be near flush, only about 0.5mm (.25 eash side).
Stick one end of the the wishbone in a vice and bend it slightly.
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Minicooper
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| posted on 9/1/12 at 03:30 PM |
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I tweaked my wishbones with a scissor jack
Cheers
David
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Bluemoon
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| posted on 9/1/12 at 03:32 PM |
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quote:
Originally posted by Minicooper
I tweaked my wishbones with a scissor jack
Cheers
David
Or in engineer speak "cold set"...
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Poorscousertommy
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| posted on 9/1/12 at 03:57 PM |
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Yep, spoke to the boys at MK, bit of gentle persuasion and jobs a good un
thanks all
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Davegtst
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| posted on 9/1/12 at 04:43 PM |
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I had exactly the same problem (seems to be another common design fault). I had to spread them by using a spring compressor to get them to fit.
Trouble is if you don't spread it to the correct size the bushes in the wishbone will be hard up against the carrier and will stop the
suspension working properly and possibly even cause failure over time. The crush tube should be tight against the carrier with a gap between the bush
and carrier.
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Bluemoon
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| posted on 9/1/12 at 05:22 PM |
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I not sure I would call it a design fault, just weld distortion.. It would be better if MK would cold set after so it fits back in the jig after
welding, or figure out a better method to weld the bones to minimise the distortion. The bottom line is the bones must not bind at all over the full
range of movement once the bolted up..
If cold setting without the jig you could end up with the bones twisted if not careful..
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MakeEverything
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| posted on 9/1/12 at 06:47 PM |
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quote:
Originally posted by Bluemoon
I not sure I would call it a design fault, just weld distortion..
So it's a manufacturing fault then? If I paid 8k for a chassis set, I wouldn't expect to "cold set" anything. As above, the
risks are significant, which could result in voiding warranties or your statutory rights.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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loggyboy
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| posted on 9/1/12 at 07:31 PM |
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quote:
Originally posted by MakeEverything
quote:
Originally posted by Bluemoon
I not sure I would call it a design fault, just weld distortion..
So it's a manufacturing fault then? If I paid 8k for a chassis set, I wouldn't expect to "cold set" anything. As above, the
risks are significant, which could result in voiding warranties or your statutory rights.
But the MK chassis set is under £4k?
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MakeEverything
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| posted on 12/1/12 at 08:59 PM |
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quote:
Originally posted by loggyboy
quote:
Originally posted by MakeEverything
quote:
Originally posted by Bluemoon
I not sure I would call it a design fault, just weld distortion..
So it's a manufacturing fault then? If I paid 8k for a chassis set, I wouldn't expect to "cold set" anything. As above, the
risks are significant, which could result in voiding warranties or your statutory rights.
But the MK chassis set is under £4k?
Does it matter? You pay money for parts you need to modify from Ford? No.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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JekRankin
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| posted on 12/1/12 at 09:32 PM |
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If bending the wishbone is a worry, I think you'd be perfectly within your rights to send it back and ask for one which fits correctly - I did
the same when I had a similar issue with a wishbone on my BGH Fury.
Design-wise, to stop this problem happening, couldn't they just weld a small length of tubing in to brace between the two outer wishbone bushes?
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iank
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| posted on 12/1/12 at 09:50 PM |
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quote:
Originally posted by JekRankin
If bending the wishbone is a worry, I think you'd be perfectly within your rights to send it back and ask for one which fits correctly - I did
the same when I had a similar issue with a wishbone on my BGH Fury.
Design-wise, to stop this problem happening, couldn't they just weld a small length of tubing in to brace between the two outer wishbone bushes?
What, like Caterham 
http://www.caterhamparts.co.uk/product.php?id_product=2617
http://www.caterhamparts.co.uk/product.php?id_product=3247
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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JekRankin
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| posted on 12/1/12 at 09:56 PM |
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That's it! The Fury rear wishbones have similar bracing, though they are not quite so elegant as the Caterham ones!
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Davegtst
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| posted on 12/1/12 at 10:06 PM |
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quote:
Originally posted by JekRankin
If bending the wishbone is a worry, I think you'd be perfectly within your rights to send it back and ask for one which fits correctly - I did
the same when I had a similar issue with a wishbone on my BGH Fury.
Design-wise, to stop this problem happening, couldn't they just weld a small length of tubing in to brace between the two outer wishbone bushes?
I did bring this up with MK once along with numerous other faults and was basically told to Fu*k @ff!
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