Bike is a mamba venom double strike, 750w (unsure of brand) rear hub motor. Not sure what this metallic rattling sound is, it doesnt happen when motor run with wheel lifted, only when under load.
Seems to go away when at cruising speed but happens while accelerating or climbing a hill sometimes. Seems to only happen on p3, p4, p5, but not the lower p1 and p2 power levels. Any ideas?
by StockAvailable8600