Well i thought about the belt.. but i thought there maybe abit of play it in.. with the belt maybe slipping a little more the gears would.. therefore making the preset thing useless.. . As to a clutch disk... it sounds hard.. but.. i think i kinda get what u mean.. i'm kinda thinking something along the lines of the clutch system thats in my nitro rc car.. but probably abit beyond me.. at this stage
And of course the electronics look good.. it was a kit! from jaycar.. i'm not clever enough to design my own circuit
i wish i was though. But i've just made some mods to the kit to suit the purpose and re-written the software to suit. I did this so that someone just like me, with very limited knowledge should be able to replicate it. Alot of the homemade focusers on the net require special skills, tools or equipment.. thats why i thought i'd try to make something thats close to being a kit that anyone can do it.
el
