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    Suntour HESC Rear Hub Motor rotating on axle?

    Thanks. The bike came with only one tab washer in total which goes on the inside of the dropout in order for it to locate on the flats in the axle. As the axle nut is torqued up, the non tab side of the washer bears on the inside of the cassette but its diameter means that it does not bind on...
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    Suntour HESC Rear Hub Motor rotating on axle?

    Thanks vfr 400 for the information and particularly the photos. I still have one problem which I haven't managed to find an answer to. My Suntour rear axle has flats only on the cassette side and adjacent to the top gear cog and not extending to the outside of the dropout. So looking at yours...
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    Suntour HESC Rear Hub Motor rotating on axle?

    Many thanks all. First, I did not know, and I should have- that there are castellated spacers, I'll call them, on each side of the rear wheel. Maybe the bike was wrongly assembled with only the one, which is why it has broken. Interestingly, though, on my bike the rear axle is chamfered only on...
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    Suntour HESC Rear Hub Motor rotating on axle?

    I have had a Crossfire -E for 3 years now. The bike is presently unusable. Basically, when climbing steep hills where I live ( 15% to 20% or higher) on full power, the hub motor connection to the battery is wrenched loose, thereby losing all power because of rotation of the cover from which the...