Geeks -key of make-

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Turn a regular bike into a motor-assisted one! Idea Wanted!!

■ Background When I saw my middle aged co-worker ride her broken electric bicycle, I won...

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A new bike

Reinforced plastic? material such like transparent shield that riot police have. Or, surfboard? M...

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Spoke sponge brush tire

It is a sponge brush for washing cars spoke portion of the tire of the car. Iron powder, so stick...

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