Nice looking parts. I’m looking forward to seeing the finished product!
Nice! Did you realize that our pulley is not symmetric. The center ring, having the bolt holes in, is not located in the center of the teethed pully surface . One side measures 7.75mm, the other 8.75mm (edge of pulley to surface of center ring). This way you can offset the pulley 2mm further in or out, depending on your built and used spacers. We use 17mm long M4 hex spacers to space off the pulley.
Frank
Yep, I’ve spaced them out equally on each wheel. I’m using a 15mm belt which is narrower than the pulley, so a mm left or right won’t affect the performance.
But I did make sure to orientate each pulley the same way for the two wheels.
Oh ya… next to clean up the cross support… It’s looking really rough because my bit is getting to the end of its life after all this milling:
Also, the bottom support will get its own set of holes instead if piggybacking off the motor mount slots like it is now. That was just for temporary mockup purposes
Do you have plans to add shaft extensions? I’m not sure the 54’s will do the width of the mount and a 12 or 15mm pulley…
What about one of TB’s 15 mm pulleys where the dual set screws are off the pulley closest to the motor?
Not sure. That aluminum looks really think. I think ur only option would be shaft extensions. Maybe you could try for science! Haha
Do you know how long the shafts are? Same as Enertion or an sk3?
I may end up just milling out that center area more to allow the set screws of the pulley to fit inside…
Let me check from the last group buy. I have one left over that I will measure tomorrow.
Appreciate it!
I think if I millout the center rectangle a little larger so that the set screw side of the pulley will fit inside, it’ll all work out fine.
Shaft is 20mm long. I hope the milling works out!
OK, so that’s .8 inches, giving me roughly 1/3 of an inch hanging out. If I mill out another 1/3 inch that should be plenty.
Appreciate the quick replies!!
No problem, glad I could help.
Hi cmatson, can you still tilt the board to the max? Your mounts look a bit to high. Regarding the pulley width: A 15mm belt requires a 20- 21mm wide pully, since the belt will swim a bit sideways. Best way forward regarding the pulley is a long axle shaft. With your machine you should be able to mill the flat spots at the very end, where the motor can interlocks with the axle shaft. I would use a support bearing to protect motor bearing from wearing out.
Frank
Just measured the usable shaft space (circlip) and it is 24.85mm.
Will be finishing the whole thing up tomorrow! Still need to pick up some waterproof boxes similar to @barajabali’s.
I went ahead and wired it up, and everything is working, but don’t want to show anything else until it is actually finished!