Hi Mick,
Torque is not a problem, drive belt slip and gearing up are problems I've had.
Gearing up is easy, but belt slippage is more of an issue.
For now, I've solved it, but the belts are a little stretchy and they may slacken off over time?
If you made the gears out of push bike sprockets from the front and back,you'd have it cracked !!
Somthing I may end up doing, but for now, it's all working fine
Replacing the pulleys for bike sprockets is very easy, just turn the pulleys down 3mm and bolt on the sprockets.
You can buy whole new matching bike sprockets (cassettes) and chain from Crapbay for peanuts!
Belt slippage, try using bigger pulleys.
www.shebbearshooters.co.uk. Ask for Rich and try the coffee
And today the new plastic shed went in.
Still got to bolt it to the ground, but thats no big deal.
https://ibb.co/duUg9z
https://ibb.co/kPdmbe
Fingers crossed you don't get the wind we've had today , I'd be putting them holdin down bolts in just in case
And the cover boxes made and painted for the whizzers.
Note also the guides infrount of the cable wheel.
The guides are 7mm with a smooth 'funnel' just incase the cable gets a 'wobble on' at any point.
https://ibb.co/jTXPwe
Brill idea wish you all the best with your project