Motor Shaft to Prop Shaft

[biggsgolf]

My shafts do not align. The motor shafts (5MM) are below and inside the Prop shafts (3MM). I can make longer Dog Bones and move the Cylinder forward of center, but looking for alternate ways to make the connections. Disregard the center shaft with the notch in the photo. Thanks for ideas.

[JHapprich]

Raboesh-couplers and intermediate shaft? Thats what i do.

[type7]

Shorten the prop shaft. Cut a dog bone in half and lengthen it to make it into an intermediate shaft.

[biggsgolf]

Shorten the prop shaft. Cut a dog bone in half and lengthen it to make it into an intermediate shaft.

Yeah, aware of that technique, the angles are too much.

[redboat219]

Lego or Tamiya universal joint

[biggsgolf]

Lego or Tamiya universal joint

Amazing! Thanks so much! I can re create and print correct size!

[redboat219]

STL files https://www.instructables.com/WiFi-Paddle-Boat-II/

[biggsgolf]

working on it!

[biggsgolf]

STL files https://www.instructables.com/WiFi-Paddle-Boat-II/

Cool, trying it too

[Subculture]

I prefer to avoid cardan couplings they always give vibration unless perfectly aligned as they’re not a constant velocity design. You can purchase really nice stainless steel CV shafts in all sorts of sizes online, however they’ll nearly always be metric sized, so bear that mind if you’re using imperial sized shafts.

[biggsgolf]

I prefer to avoid cardan couplings they always give vibration unless perfectly aligned as they’re not a constant velocity design. You can purchase really nice stainless steel CV shafts in all sorts of sizes online, however they’ll nearly always be metric sized, so bear that mind if you’re using imperial sized shafts.

Thanks for that!

[biggsgolf]

Bob posted a video on this operation:

https://www.youtube.com/watch?v=pSACedzjiyg&list=PL8cwIIx5nqllol5sDjvdwyjfgmlquxtqf&index=2