I added a strip of 1/8 thick pipe insulation tape to the bike wheel to add grip for the rope. I normally keep the rope slack and it seems to work well.
You will need to disassemble the hub, clean all the grease out and JB weld the inner components together so that the wheel turns both directions instead of having the hub in freewheel when the pedals are not moving.
Perfect....just what I was looking for. Thanks for sharing
Love it! Made one out of an old ceiling fan motor, but wasn't quite strong enough and you had to have power. This cures both those problems!
Explain more about fixing the hub and sprocket.
thanks for the idea
Very good set-up, Thanks for the idea , any modifications or upgrade for sagging ?
The sagging in the rope hasn't been a problem for me. It seems to help stabilize the target.
How do you ensure the rope doesn't slip on pulley. Only by adjusting the tension?
I added a strip of 1/8 thick pipe insulation tape to the bike wheel to add grip for the rope. I normally keep the rope slack and it seems to work well.
How long is yours? You think your system would work out to 300 feet?
My system is 70' long but I'm sure it could be considerably longer. Getting the rope tension correct without having too much sag might be a challenge.
how do you modify the hub
You will need to disassemble the hub, clean all the grease out and JB weld the inner components together so that the wheel turns both directions instead of having the hub in freewheel when the pedals are not moving.