Re: sevcon controlled electric drive does not rotate
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Yea 9 times out of 10 its the encoder (position sensor) that fails and if the motor gets they will get wet and fail. Always good to have a spare on board. If you install the replacement carefully you can usually get away with not needed to reprogram the controller.? ?For this reason I'm a fan of sensor less motors on boats. There is no advantage to have a sensored motor thats only a? prop.?? Matt Foley? Sunlight Conversions Perpetual Energy, LLC 201-914-0466  ABYC Certified Marine? Electrical Technician?
On Tuesday, November 7, 2023 at 01:59:00 PM EST, Myles Twete <matwete@...> wrote:
Interesting to learn that the angular position sensor boards have this level of failure rate. On balance, my 20yr old ETEK brush motor (on 4th set of brushes) setup doesn’t look so bad even today with so many seasoned brushless alternatives. I did have an Alltrax AXE controller fail this summer (after 20 years), but that was probably my fault. I replaced it with a used one bought on Ebay (Alltrax NPX) which didn’t deliver close to the battery voltage let alone its rated full power.? Thankfully, Alltrax agreed to reflash the memory in the controller and changed the throttle type to ITS (inductive throttle sensor) for me and it’s been working like a charm since.? No idea why but even while it acknowledged full throttle it would only output about ? battery voltage to the load. ?That used controller was a boat-anchor if it weren’t for Alltrax doing this for me. ? From: electricboats@groups.io [mailto:electricboats@groups.io] On Behalf Of jeffsschwartz@... ? Hi Tim, |