Folding bicycle freewheel

Within fixed flywheel screwing right rear axle , and the chain to maintain the same plane and connected by a chain and sprocket drive system constituting the electric folding bicycles . From the structure can be divided into single-stage and multi -stage flywheel flywheel two categories. Flywheel also known as single-stage single- piece freewheel sprocket , mainly by the coat, flat block and core , extremely heavy , extremely heavy springs , washers, wire block a few balls and other parts.
Its single stage freewheel works: When moving a step forward foot is chain driven flywheel rotates forward , then the flywheel teeth and extremely heavy phase containing flywheel rotation force transmitted through extremely heavy slug , slug driven rear axle and rear wheel bicycle on forward . When you stop pedaling action pedals , chain and coat do not rotate , but the rear-wheel drive is still under the effect of inertia and extremely heavy slug forward rotation , then the flywheel relative sliding in the tooth , thus compressing the core to the core the sub- notch , extremely heavy and extremely heavy compressed spring . When extremely heavy gear tooth tip slid inside the top of the flywheel , the most extremely heavy spring is compressed , and then slide forward a little bit , extremely heavy shells to be extremely heavy spring tooth root , the issue " blah" sound. Core rotating faster, jin soon slide the flywheel teeth in each issue "blah " sound. To components. Multi-level flywheel is at the flywheel when the single-stage reverse foot pedal action , jackets reverse rotation , slide will accelerate extremely heavy , so "blah" sound more rapid. A multi-stage flywheel weight based on the bicycle speed change device , a few slices of sprockets increase , combined with the sprocket shaft, the composition of the various transmission ratio, thereby changing the speed of the bicycle .