Rotary / Chain drive motor alternatives - Printable Version +- OpenMarine (https://forum.openmarine.net) +-- Forum: Pypilot (https://forum.openmarine.net/forumdisplay.php?fid=17) +--- Forum: General discussion (https://forum.openmarine.net/forumdisplay.php?fid=18) +--- Thread: Rotary / Chain drive motor alternatives (/showthread.php?tid=1792) |
Rotary / Chain drive motor alternatives - sjgharib - 2019-05-01 Hi Guys Another question - has anyone successfully adapted an automotive based motor for a chain drive / sprocket drive autopilot driver? i.e. i was looking at it, and it seems to me that an automotive door window motor may be a good option, as they are pretty high torque (higher than the wiper motor examples i've seen). Just wondering if anyone has played with this at all... They have a stall torque of around 10 NM (half of the T1 Raymarine drive, which is 20 NM), but are a 2x faster (60 RPM vs 33 RPM), so you could adjust with a larger sprocket on the wheel shaft... so it seems to be "in the ballpark"... Of course the appeal is $20 vs $1500.... RE: Rotary / Chain drive motor alternatives - svkatielee - 2019-06-29 I am interested in your decision. I assume from your question that you intend to make a wheel pilot with chain drive? If so, a disengage clutch will be important. The wheel pilots use a belt drive and depend on belt tension and slippage as a clutch. A previous auto pilot was very difficult to disengage which made it sometimes dangerous. |