Clutching at straws
Turbo Mini Forums

So, the time has come to check the clutch I have before bolting the flywheel up. I lapped the flywheel in as a start, and then went about checking the level/attitude of the spring.

Well as I understand it, the spring needs to be level, so as when the release mechanism starts to move it, it goes overcentre and hence the release force drops off.

At the moment my spring is sitting pointing 'down' from the diagphram backplate towards the flywheel, so I need to shorten the drive lugs off the backplate.

My question is, how do I determine the amount I need to machine them by to get the spring to sit flat? The only way I thought of was to try and measure how far "off flat" it is currently, but practically I don't think you could achieve this with enough accuracy to be meaningful!

Any comments gratefully received!

From what I have read mate, you need to get the whole assembly together in a fly press or similar, so that you can manually compress the spring.

Set up a dti to measure the distance from how it is now until it is "flat"

Thats the amount you need to machine off.

So I beleive

Makes sense. I suppose you need to support flywheel round the edges and then manually compress spring.

Hmm where is there a press.........

Yes you need to let the backplate move, I suppose you could use a pillar drill with a pull down arm to the same effect............