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5 Mk I incl Gordini Converting trailing arm bushes to bearings

Kevin Leaper

New Member
Anyone successfully changed their Mk1 R5 to bearings rather than rubber bushes on the outer mounts of the trailing arms. I've had to take mine off and although the rubber bushes feel fine I can see tell tale marks where the tyres have rubbed the rear inner arches, presumably under hard cornering. Just wondered if there was a conversion out to stop the rear arm toe-in/out altering.

Cheers
 
Anyone successfully changed their Mk1 R5 to bearings rather than rubber bushes on the outer mounts of the trailing arms. I've had to take mine off and although the rubber bushes feel fine I can see tell tale marks where the tyres have rubbed the rear inner arches, presumably under hard cornering. Just wondered if there was a conversion out to stop the rear arm toe-in/out altering.

Cheers
@r5gordini would be a good person to ask.
 
I have looked at this and failed to find suitable bearing to fit the standard size, therefore looked at machining suitable inserts to allow a variety of bearing but could not just find any available, I even contact suppliers in china to make some bearing up but were cost prohibitive, I finally found lighter bearings only 12mm wide which I was thinking of pressing 3 in line but opted against them due to the rigidity.

Have now pressed new bushes, if you find a suitable method I would be interested
 
Thanks, sounds like it's a no go but I'll have a look once I've got them on the bench. I was naively hoping that something like the repair sleeves and bushes used on Pug rear arms could be utilised.
Cheers
 
These were custom needle bearing quotes I received from HB Bearings, I tried SKF and the likes but they drew a blank, I also looked polybush replacement with roller bearings but the sizes are prohibitive and I felt that a solid polybush would not allow the vertical movement required for the trailing am moving up and down and would in eventually turn the sleeve pressed onto the trailing arm, also the problem with the bearing is preventing lateral movement, granted they would be pressed on but I felt it may require end bolts and this was difficult due to the torsion bars. I did even pour my own polybushes but eventually opted for uprated 90pen bushes from meca.

Needle Roller Bearing 54.7 od x 35.7mm id x 33mm long 2 off £140.00 each nett
to manufacture Delivery 4 - 6 working weeks
Needle Roller Bearing 54.7 od x 37.5mm id x 50mm long 2 off £160.00 each nett
to manufacture Delivery 4 - 6 working weeks




** HB Bearings Manufacture, Made in the UK **
 
Looked at this years ago and gave up! Rubber is designed to give compliance and take shock loadings, poly bushes when we tried them failed fairly quickly as the loading and abrasion wore them out in a matter of a couple of hundred stage miles
 
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