Cherap fix - take the pinion out of the focuser. Slip on a suitable size of shrink tube, shrink it, and reinstall pionion (adjusting the tensioners appropriately to permit the larger diameter).
I did this on several Skywatcher Crayfords, and it works well.
Get one of Stellarvue's new replacement rack and pinion dual speed units. SMOOTH, and hold weight very well.
|