Hi, I'm having a problem with my front wheel mac motor (geared hub motor similar to BMC). Firstly I believe the clutch is stuck, it sounds like the motor is turning when I'm freewheeling with the throttle off. I replaced the gears on it fairly recently and used a black coloured multi purpose lithium based grease, I've read somewhere that you shouldn't use a moly grease but I don't think this is. Secondly the drive is sometimes cutting out, power seems to reduce and I get a rough sound from the motor (possibly spinning??) then it cuts out after a few seconds. If I keep trying it eventually runs as normal. This usually happens once every 15 miles, any ideas? I'm thinking it's probably related to the clutch but not sure what's happening. I've pulled the motor out and it all looks ok, the gears are all intact but if I hold the outside edge of the clutch I can't turn it around the spindle in either direction. In truth I'm not sure if I ever could, I don't remember it turning like that but looking at a video about BMC clutches online it looks like I should be able to and it would make sense if I could. The other possible is that there were some water droplets inside the motor as well.
I've found a similar post on endless sphere but it was never concluded so I don't know what the OP discovered.
Any ideas?
I've found a similar post on endless sphere but it was never concluded so I don't know what the OP discovered.
Any ideas?