Cheers for the replies lads - good suggestions.
I have rebuilt it and its still the same. It was built fine and the pads were seated fine too as it happens but its what i would of suggested to check.
After running the motor and the spur assembley on their own without either belt connected its apparent that the noise is due to the meshing between the Tamiya pinion and the Tamiya Spur. They do not mesh very well at all when held up to the light. This may be due to a slightly badly moulded spur or slight damage caused by running it on the bench with the bent centre shaft.
Anyway, i have ordered a new centre shaft, a B44 spur and some different pinions to try. It would probably work fine as it is in truth but i cant live with that noise. Im used to 64p whisper quiet.
I have cured the rear belt rubbing on the back of the slipper plate by fitting 4 of 4x 0.2 shims instead of the manual recommended 2 of 4x 0.2. It takes the play out and pushes the whole assembley towards the speedo by a fraction so it clears.
Thanks again for the input guys.
|