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Recent content by Mickatroid

  1. M

    best Bafang Mid Drive option for off-road trike? No human power input

    I think I found the trike you are talking about online. There is an awful lot of chain there to wear out as well. A high-quality geared rear hub that supports a suitable tyre for comfort might be worth further consideration. Still some good choice in strong 26 inch rims because of downhill. I...
  2. M

    Vibrations because of BEMF Harmonics?

    Absent better testing gear maybe get a spectrograph application for a mobile phone and look for the resonant frequency in the audio spectrum. Better still clamp a contact microphone on somewhere sensible. It may not be some multiple of pole pairs and RPM. Maybe for example it is a harmonic of...
  3. M

    Axle Thread and Motor Restoration

    Patience, a wire brush and a small triangle file would be how I would attempt to clean up threads after removing mushrooming. There is a fair bit of clearance between a nut and a bolt and it just has to go on. Damaged axles for a vehicle will involve additional factors around safety.
  4. M

    Magic Pie 5 Front Hub Motor ...Off Center Wheel

    If the wheel has spokes then the issue may just be what a wheel builder calls 'dish.' If you take the bike to a bicycle mechanic they can check this. It is normal for a wheel to move a bit. I once bought a pair of wheels for a non-electric bicycle. The front wheel was so far out I could not...
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