Multi-stage flywheel is an important part of the bicycle accessories transmission

Single-stage flywheel, also known as single-sprocket wheel flywheel, mainly by the coat, flat and the core, jin, Qian Qi spring, washers, wire block a few steel balls and other components. Its single-stage flywheel works: When the forward pedal is the chain to drive the flywheel forward rotation, when the flywheel teeth and jin phase, flywheel rotation force through the kiln spread to the core, the core drive the rear axle and The rear wheels turn and the bike is on.
When the foot pedal is stopped, the chain and the jacket do not rotate, but the rear wheel still drives the core and the jig forwards under inertia, and the flywheel inner teeth are relatively slidable, thereby compressing the core to the core The mouth of the mouth, the pounds and compressed a thousand jin spring. When the jackets slide to the top of the flywheel at the top of the teeth, the 1000 spring is compressed most, and then a little forward slide a little, the burden of thousands of jin spring to the tooth root, issued a "blah" sound. The core rotation to speed up, and also quickly in the various flywheel teeth on the sliding, issued a "blah" sound. When the reverse pedal, the jacket reverse rotation, will accelerate the jin sliding, so that "blah" sound more rapid. Multi-stage flywheel is an important part of the bicycle accessories transmission.
Multi-stage flywheel is based on the single-stage flywheel, the addition of a few pieces of flywheel, combined with the sprocket on the shaft to form a variety of different transmission ratio, thus changing the speed of the bike.