Gio Bike - battery won't turn over
The power controller is probably driven by a switch mode power supply - like a cordless drill can be heard to make a subdued scream or whine as the trigger is eased just before the noise of the motor overtakes it. If for some reason your bike motor didn't make the customary noise, you could have heard the scream of the power controller for the first time.
Alternatively, maybe the bike motor was going round but the drive was disconnected or broken. Lots of things are designed so that part of the drive will snap or shear for safety in the case of a sudden seizure or impact, unfortunately such things often wear out and need routine replacement.
Maybe reading the handbook will provide the answer...
Good luck!
the bike got new bearings, big ends and mains, new rings and the valves was reset and reshimed, the one outlet cam that was snaped from the previous owner was also replaced in november. i have driven 570km, changed the oil at 500km. it was fine like it used to be, more revs more sound but it screams louder then usual at 6000rpm, and now theres a grinding kinda sound with it that sounds to me its coming from the engine.
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