Tell me about motorcycle frames that you still don't understand

1. Single steel pipe triangular hard tail cradle frame

Like the name of the cradle, let the engine "lie" in the embrace of the frame. If a steel beam is used to connect the engine support part, it is a single cradle; If the engine support is reinforced with two steel beams, it is a double cradle. There is also a special type of semi double bassinet, which is located between the double bassinet frame and the single bassinet frame, with a single tube beam above and a single tube column below, and a double tube beam at the bottom. Single cradle is a relatively old type of frame industry, and currently there are few new models using this frame. However, European and American old-fashioned style motorcycles have always adhered to this frame, and the advantages can only be said to be particularly simple in manufacturing. However, the disadvantages are insufficient rigidity and poor comfort of the frame (because the rear wheel rocker arms do not have a shock absorber system), so this frame is only suitable for low-speed driving

2. Dual Cradle Steel Pipe Frame

This type of frame is relatively easy to understand. The double steel pipes extend from the front to the rear of the car, surrounding the four corners of the left and right engines. This frame compensates for the shortcomings of the single pipe cradle frame, improves overall strength without increasing production costs. However, the weight is heavy, the engine installation is cumbersome, and there are many connection points between the frame and the engine, which is prone to the so-called resonance zone

3. Half double cradle steel pipe frame

This type of frame combines the advantages of a single cradle frame and a double cradle frame. It uses a single tube in areas where it does not require much rigidity, and a double tube in areas where high rigidity is required. The advantage of this frame is that it enhances the strength of the frame while being lighter than the double cradle frame, resulting in a more compact structure

4. Diamond frame

As people continue to pursue the performance of motorcycles, especially when the torque and power of motorcycles increase, the lateral support of the cradle frame is insufficient due to the need for continuous turning on the track. Considering the demand, enhanced lateral strength has been developed. Due to the overall shape resembling cut diamonds after research, this type of frame is called a diamond frame. Diamond frames compensate for the shortcomings of cradle frames in terms of lateral support, and diamond frames are more common in sports vehicles.

5. Single shell frame

There are relatively few types of frames used, which are only suitable for large displacement. Instead of being a frame, it is more like an accessory of the engine. In addition to balancing the frame, it also has an air filter housing and battery box. This frame combines the rigidity of the engine itself by adding a rigid structure, making the engine and frame integrated. This is completely suitable for design as a large displacement sports car or cruise sports car

6. Double wing beam frame

The emergence of a double wing beam frame has improved the handling performance of motorcycles. Due to the use of lighter materials for manufacturing, the inertia force of the vehicle body is reduced, providing better response and coordination during rapid or high-speed steering and rapid changes in speed.

7. Integrated all steel frame design

The famous Monocoque integrated frame of VESPA adopts an integrated all steel frame design instead of the steel pipe frame commonly used for pedals. The biggest difference between the two is that in general, scooters lock plastic body parts through screw holes