Dave Bailey
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| posted on 12/2/07 at 07:23 PM |
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Suspension Bushes
I have just been reading the polybush thread in the running gear section and athough I totally agree with the comments that the crash tube in the bush
should move and not the whole arm on the bolt what have people experienced when following the build manual. My crash tubes seem shorter than the width
of the assy with the bush fitted (although I have re-powder coated). The manaul states do it up tight then undo the nut until the bolt head starts to
move. Have people found that the crash tube moves in the bush or that the bush moves in the bracket?
thanks
Dave B.
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bodger
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| posted on 12/2/07 at 08:55 PM |
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Tightened my bolts to 70nm & moved the wishbone, which was very stiff, up & down a few times.
I then disassembled it & checked where the crush tube ends were touching the U bracket. There was still paint there so I'm assuming that the
crush tube isn't moving otherwise, with the rough finish on the crush tube ends, it would have stripped the paint away.
So the joint is working correctly but it needs freeing up a bit.
My crush tube is definitely slightly longer than the bush though.
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rusty nuts
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| posted on 12/2/07 at 10:06 PM |
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Dean was going to look into longer crush tube when I spoke to him at Newark last year . If you got your kit before then it's likely they are too
short. Don't know if anything has been done about them though.
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wilkingj
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| posted on 13/2/07 at 07:09 PM |
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As I understand it, the Crush Tube should NOT move. If the bolt is not tight enough, the bolt will move and wear the holes in the Bracket, thus
needing the brackets to be replaced as the holes wear into an oval.
If when you tighten the Bolt up, and the arm is stiff, then you need to remove a little from the outside of the polybush at each end, until the arm is
a nice smooth movement. Probaly only a few thousands of an inch.
I have spoken with Luego about this, and so has Rusty. (remember Luego has changed hands less than a year ago) Some of the kits had slightly shorter
Crush tubes causing the polybush to be crimped and thus binding a little making the arm stiff.
Rusty had to trim his poly bushes as well, as the crush tubes were a little short. Its an easy job if you have access to a lathe, and some vernier
calipers to measure the bushes and the tubes accurately.
If your bolts are not tighted properly, they can move and wear, or even come undone despite them being nylocs
Make sure you get the suspension done correctly.
Its a Mission Critical" area, and you do not want any mistakes. Your, or someone elses life can be at risk from not getting this bit right.
Just my 2d worth.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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Dave Bailey
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| posted on 13/2/07 at 10:13 PM |
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Thanks guys...been in the garage tonight knocking the crash tunes out of the bushes. I thought what the hell don't really want bits dropping
off!
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