Compared to a regular chain bike, the other components of a chainless bicycle are the same, but the transmission method is different. What is the price difference between a chainless bicycle and a regular chain bicycle?

1. The transmission efficiency is different. Chainless bicycles are driven by precision transmission shafts, with an efficiency of over 99%, while the mechanical efficiency of chain transmission is only 95%, which means that when we use the same force to step on the pedal, chainless bicycles can travel further than chain bicycles.

2. Different lifespans. The transmission system of a chainless bicycle has a lifespan several times that of a regular chain bicycle. The transmission shaft of a chainless bicycle is driven by gears, which are the same product as the gears of a car gearbox. The lifespan can reach tens of thousands of kilometers, while the lifespan of a chain transmission may experience chain breakage after a period of use.

3. The working environment is different. The transmission system of a chainless bicycle is the transmission shaft, and the outer shell is made of aviation grade 6061 aluminum alloy material. After heat treatment processing, the firmness of the outer shell is increased. The entire transmission system is fully sealed, which can block the entry of soil and sand. Chain bikes have a fully open working environment, where not only can debris enter, but they can also rub clothes and dirty pants, making them prone to rusting.

4. The production cost is different. The transmission system of a chainless bicycle includes: a five way housing, gears, spline shafts, shaft sleeves, lock nuts, position adjustment joints, etc. The gears and spline shafts are made of special steel that has been forged, heat treated, and processed by CNC machine tools, while the five way housing is made of aluminum alloy material and processed by CNC, with a production cost exceeding 300 yuan. The transmission system of a chain bicycle consists of a flywheel, chain, sprocket, and protective cover, with a production cost of 20 yuan.
Therefore, under the same configuration, the production cost of a bicycle without a chain drive shaft is higher than that of a chain bicycle!