I'm also struggling to find the correct gear for a wheel drive.
Pulleys are not as available as I thought. Apart from those you found in AliExpress, I found these. I still have doubts if this would be optimal for our purpose, as long as:
1) They would attach directly to the wheel shaft, in contrast to the use of J anchor bolts to the wheel spokes in other mountings (like CPT autopilot, Raymarine, etc...).
2) Their diameter is much smaller than those other J bolts mountings (16 cm vs 30 cm?).
On the other hand, following Sean advice, 3D printing may be the best option. I found some designs online (e.g. https://www.thingiverse.com/thing:5492156, https://www.thingiverse.com/thing:3636189), but no one adapts 100% to what I need and I don't have a printer nor knowledge on design.
There is a thread in this forum where Sean posted his designs: https://forum.openmarine.net/showthread.php?tid=4342 and https://drive.google.com/drive/folders/1...BwMoeFjrUV. So I will probably try this and see what happens.
Pulleys are not as available as I thought. Apart from those you found in AliExpress, I found these. I still have doubts if this would be optimal for our purpose, as long as:
1) They would attach directly to the wheel shaft, in contrast to the use of J anchor bolts to the wheel spokes in other mountings (like CPT autopilot, Raymarine, etc...).
2) Their diameter is much smaller than those other J bolts mountings (16 cm vs 30 cm?).
On the other hand, following Sean advice, 3D printing may be the best option. I found some designs online (e.g. https://www.thingiverse.com/thing:5492156, https://www.thingiverse.com/thing:3636189), but no one adapts 100% to what I need and I don't have a printer nor knowledge on design.
There is a thread in this forum where Sean posted his designs: https://forum.openmarine.net/showthread.php?tid=4342 and https://drive.google.com/drive/folders/1...BwMoeFjrUV. So I will probably try this and see what happens.