Finaly had a good morning with the car and have now found the major cause of the noise it was to much up and down movement on the centre spur gear, I have now drilled the alloy top plate and tapped two m2.5 holes and loctited two grub screws too hold the bearings down but not squash them, I had always discounted the spur gear as it looks like new so thought that all was well, I would have been expecting to see some wear marks on the teeth as it was chattering along.
|