What is the difference between a single rocker arm and a double rocker arm for motorcycles?

1. Different selling prices

Most household motorcycles or mid to low-end motorcycles on the market adopt a double rocker arm design, which reduces the manufacturing cost of the vehicle due to its relatively simple structure, and the selling price of motorcycles is also relatively cheap; However, single rocker arms are generally only installed on high-end high displacement motorcycles, and the purchase threshold for this type of vehicle is relatively high, often ranging from tens of thousands to even hundreds of thousands.

2. The convenience of tire disassembly and assembly varies

Generally speaking, a double wishbone car requires dismantling the fixing devices on both sides to remove the wheels, which requires a lot of time and effort. However, the single wishbone model was originally designed to cope with motorcycle racing, and tire replacement only requires dismantling one side, which can save more time for motorcycle racing and make daily maintenance more convenient for users.

3. Different steel properties

Because the single rocker arm was originally developed for competition, and the participating motorcycles not only have large displacement and heavy body, but also require long-term high-speed operation, the precision and material requirements for machining of the single rocker arm are relatively high; However, due to its strong stability, the double rocker arm model does not put too much effort into the material aspect, so the body rigidity of the single rocker arm model may be higher in the same level of vehicles.

However, it should be noted that if the double rocker arms are also made of the same material and manufacturing process, they can have higher stability under the support of a symmetrical design.

4. Different weights

Because single rocker arms require materials with higher strength and more complex structures, theoretically speaking, the weight of a typical single rocker arm model is heavier than that of a double rocker arm model, while the weight of a double rocker arm model is often lighter. It should be noted that the above refers to ordinary motorcycles, and some professional-level racing cars are not ordinary. Even with a single rocker arm, these cars can still ensure that the body weight is not too heavy.

The above is a diagram of the difference between single and double rocker arms. It can be seen that both have their own advantages and disadvantages. If you have a sufficient budget and a high pursuit of personalization when buying a car, you can consider purchasing a single rocker arm model; But if everyone has a limited budget for buying a car and is not particularly fond of a single rocker arm, then of course choosing a double rocker arm would be more suitable.