Originally Posted by andyuk99
I bet the spur gear does not run true ... even Andy Moore drops the carbon bit on the gear. You may need an additional grub screw to get this correct.
On both my Clones; Surikarn and Moore, the spur runs true.... and this was without ever thinking I needed to add an additional grub screw....
However you do need to be sure you tighten the spur screws up evenly.... (Just a thought)
Just another thought... I also use spacers to take up the gaps/slop between the pulleys, spur hub, and bearings on the layshaft... this may help in ensuring the spur runs ture.....