Morning guys,
Apologies for the slow response, been pushing up Zzzzz Earth top side
Thanks for the positive feedback, very pleased you like the gear and images !
David - I wanted to put as little stress on the lens as possible. Using a drive pulley one side and an idler pulley the other side and a belt acts to support the lens. The action of the belt is much like turning the focus barrel with your hand, obviously what the lens was designed for. Also this lens has no mounting shoe so is supported between 100mm guide rings and six nylon tipped support bolts. The belt arrangement minimises any pressure points produced by the six point mount.
I posted my SharpSky focuser a few days ago on this site, can send you a kit if you fancy equipping your WF rig with remote focus.
Cheers & clear skies,
Dave