Munkul
Jack of some trades, Master of none
- Messages
- 7,370
- Location
- Cumbria
Been too busy the last couple of weeks to do very much with this. All I've done so far is spin it with a cordless makita drill... which I THINK will be the easiest, most cost effective way to drive it.
A 2 speed drill ran at lowest speed (cheap version with plastic gearbox) can spin my brother standing on it no problem, he's 90kg. My 3 speed metal gearboxed drill spins it even slower (under 0.1rpm) and sounds a bit less laboured... also the top end is superb, didn't measure it but probably around 10rpm, which is way faster than needed!
So the plan is to buy a S/H 3 speed drill, chop the casing up, change the trigger speed controller for a switch + pot, get an adapter from drill spindle to positioner machined up, and make a nice case to hide the abortion. It will be fed 24v DC, but will probably need a 500w power supply from what I've read about drill motor power.
A 2 speed drill ran at lowest speed (cheap version with plastic gearbox) can spin my brother standing on it no problem, he's 90kg. My 3 speed metal gearboxed drill spins it even slower (under 0.1rpm) and sounds a bit less laboured... also the top end is superb, didn't measure it but probably around 10rpm, which is way faster than needed!
So the plan is to buy a S/H 3 speed drill, chop the casing up, change the trigger speed controller for a switch + pot, get an adapter from drill spindle to positioner machined up, and make a nice case to hide the abortion. It will be fed 24v DC, but will probably need a 500w power supply from what I've read about drill motor power.