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Robin Hood Bushes
Minicooper - 21/9/05 at 10:51 AM

Thank in advance,

I have a set off 20 wishbone eye sets from Robin Hood, the bushes are made from what looks like very tough plastic it is not like the deflex softer yellow bushes you see.

Are these rock hard bushes suitable for the 4 trailing arms ends for an axle bearing in mind the twisting that will take place on corning

If not any suggestions on replacements and supply?

Cheers
David

splitrivet - 21/9/05 at 03:14 PM

They are what I used David.
Cheers,
Bob

MikeRJ - 21/9/05 at 05:48 PM

quote:
Originally posted by Minicooper
Thank in advance,

I have a set off 20 wishbone eye sets from Robin Hood, the bushes are made from what looks like very tough plastic it is not like the deflex softer yellow bushes you see.

Are these rock hard bushes suitable for the 4 trailing arms ends for an axle bearing in mind the twisting that will take place on corning

If not any suggestions on replacements and supply?

Cheers
David


I have a set of very hard polybushes for my trailing arms, and the only reason I've not fitted them is I'm not happy about the stresses that will be put on the brackets and the trailing links themselves. I tried clamping the crush tube in a vice and even with my (considerable) bulk on the end of the trailing link I could hardly get it to deflect much at all.

The books design trailing arm chassis mounts are reknown for cracking anyway, and that's using Triumph Herald bushes. You can beef up the brackets to prevent this (which I have done) but to minimise the stress on the components I'm going to fit rod ends to one end of the trailing links and retain the bush at the other end.

Minicooper - 22/9/05 at 11:17 AM

Thanks for the replys Bob Mike,

Mike
I was thinking the same, although my mounts are 3mm including the support, but I'm still concerned, I'm gonna go with it since I have them, I will manually try and deflect the axle, if its rock solid I will change the bushes for something more forgiving

Cheers
David

DarrenW - 22/9/05 at 11:34 AM

There are bushes and then there are bushes!
The important factor to know is grade of polyurethane and shore hardness. I have heard of some bushes supplied that are more at home as anti-vibration machine mounts rather than for automotive sports applications. 'Testing' at home is to a large extent a waste of time as you cannot really apply the same forces to test torsional rigidity that are applied in practice. Some of the lesser grades will seem fine at first but may suffer in the durability stakes over time. It is the cheaper types that tend to give the secondary problem of unwanted noise.

My recommendation - buy what can be proven to be correct for your application.

Minicooper - 22/9/05 at 01:06 PM

Darren Cheers for the reply

I'm concerned about the bushes this is why I have posted. There must be loads of trailing arms out there on various live axle cars.

A fair amount of people must know what works well, I was hoping for a reply from one of these people with the car on the road working well with little noise transfer and great axle location control

PS I also have the metalastic bushes from the Herald would these be more suitable

Cheers
David