Rear camber -I need to adjust - so how?

[magpies]

Before taking the care for a four wheel alignment I thought I'd do a check using my cheap magnetic Sealey gauge.

Both fronts are about 0.5 deg neg(I know it is easy adjustment on top ball to top arm bolts which are in a slotted hole) - I would like them about 1.25 deg neg

Drivers rear is approx. 1 deg neg which I believe is fine

Passenger rear is approx. 6 deg neg - yes 6

The chassis did not look damaged when I refurbed it (only needed outriggers)

I cannot see any adjustment - is it done using wedge shaped shims between the trailing arm and the hub?

[magpies]

Yes checked with wheels on the ground and stuck gauge on the disc - the wheels I have do allow enough space to put the gauge on the disc and read it (just)

not calibrated but did check against all the door jambs in the house and they were all within 0.5 deg

Edited by magpies on Saturday 9th May 21:03

[magpies]

thought of that but at that angle it would be too difficult to work out the shape of the shim, but at the hub it would be a straight forward wedge shape - I just needed confirmation that that is the only way

[magpies]

LawrieS said:

The best place to check would be the mating face of the trailing arm but it's a bit too late for that now.

Not sure how the hub arrangement differs to the drum versions but were all the faces clear of paint and dirt?

I gave the faces of the trailing arms a good wire brush back to bare metal, just an idea that this could've been overlooked if powdercoated, thickness of paint between top and bottom could make a difference.

Same goes for the other surfaces between here and the hub assembly.

Never took this apart - they were refurbed by the previous owner and in brilliant condition. but I think shimming where you have circled would be the way.

I'll recheck the camber and talk to a local engineering company about wedge shaped shims. May do a 'temporary fit just placing known shims between the two top bolts, tighten and remeasure until I have approx. 1.25 deg neg

[magpies]

greymrj said:

Interesting, I must check mine. However cynical we may be about TVR build quality, I very much doubt it was that far out from new. So what has changed? And where is the change? If it was me it would be up on the ramps at a friendly local garage with some straight edges and perhaps borrow one of those small lazer squares. Get to the bottom of the geometry problem before trying to find a solution?

I agree mrj I won't be able to check til Thursday on s a two post ramp. It was a wtf moment just before I finished for the day.

[magpies]

All the bushes are new and the trailing arms were renewed by the previous owner

[magpies]

Update:

dismantled / cleaned off paint etc. and carefully re-assembled. Properly set up the camber gauge and now the reading is 2 deg neg which although more than I want, is acceptable for the Spa run next week.