OKX review

List of contents of this article:

• 1, The high rotation of the cross crankshaft and the plane crankshaft is more powerful
• 2、 What does the cross crankshaft of a motorcycle mean?
• 3, Comparison and evaluation of BMW F900R and Yamaha MT09 street car, which one is stronger, twin-cylinder or three-cylinder?

The high rotation of the cross crankshaft and the plane crankshaft is more powerful

On the contrary, the angle between the cranks of the plane crankshaft is 180°. Every time the crank rotates 180 degrees, the piston will ignite.

At the same time, because the crankshaft phase of the cross crankshaft is closer, the original dead angle of the power is staggered, so its torque output is more linear than that of the flat crankshaft. Since each cylinder is a single ignition and oil supply system, its structure is relatively complex, so its cost is higher than that of ordinary flat crankshafts.

Such ignition sequence can simulate the "LONG BANG" throttle response of the V-type engine on a small scale, and the acceleration in curves is more powerful than the V-typeThe motivation is better and the power is smoother, and the balance of the cross crankshaft is higher, the rotational inertia is smaller, and the deceleration before the curve is crisper and smoother.

Use the throttle to make torque more accurately. The four cylinders of the new R1 operate completely independently. In addition to the rich torque at low rotation, they also have good linear performance in the whole region. In order to cooperate with the asymmetric ignition interruption, the fuel supply program of the new R1 has also been modified accordingly, and four groups of independent fuel supply and ignition time have been developed.

The operating force of the R1 cross crankshaft is moderate, which will not be triggered too easily and will not affect the feel too much.

What does the cross crankshaft of a motorcycle mean?

1. The cross shaft of the motorcycle is relative to the flat crankshaft of the in-line four-cylinder engine. The following is the unfolding content: Introduction to the cross crankshaft: From the side of the crankshaft, the angle between each two cranks is 90 degrees instead of 180 degrees, so the outline you see looks like a "cross", which is the origin of the name of the cross crankshaft.

2. The motorcycle crankshaft converts the reciprocating movement into a rotational movement and outputs power through the gear at one end of the crankshaft.The position of the crankshaft: the most important part of the engine. Withstand the force from the connecting rod, convert it into torque, and drive other accessories on the engine to work through the crankshaft output.

3. The cross shaft of the three-wheeled motorcycle is made of alloy steel. The three-wheeled motorcycle cross shaft is made of alloy steel, and the hardness after heat treatment is 58~62HRC. The cross shaft, also known as the cross joint, that is, the universal joint, is a machine part that realizes variable-angle power transmission. It is used to change the position of the direction of the transmission axis. It is the "joint" part of the universal transmission device.

4. If you learn about Japanese motorcycles in the last century, you will find that era was even crazier.

5. Let me show you what a cross crankshaft is first. The link can't be sent. His advantage is that it makes the 4-cylinder engine feel like a V-cylinder, which explodes.The power is stronger, but at the same time, there is no roar of the previous R1. Many people don't like the new crankshaft very much and think that he has lost the spirit of R1.

Comparison and evaluation of BMW F900R and Yamaha MT09 street car, which one is stronger, twin-cylinder or three-cylinder?

1. The clutch pull of both models is very light, among which the MT09 is equipped with a sliding clutch and a two-way fast row, and the configuration of the F900R is not clear for the time being. The clutch range of MT-09 is narrower and more delicate. Similarly, the gearbox of the MT09 is not so accurate, and the F900R will perform a tight and accurate speed change every time it changes gears.

2. MT-09 isA sports street car launched by Yamaha in 2020. In terms of power, the MT-09 is equipped with a water-cooled four-stroke in-line three-cylinder CP3 engine, with an actual displacement of 889cc (original displacement of 845cc), stronger low-speed torque, and a maximum horsepower of about 119 horsepower (original horsepower 116 horsepower), standard configuration Sliding clutch.

3. If the new chassis manages to reduce a few kilograms of weight, it may also be lighter than the 2021 R6. Although MT-09 will be the biggest update of the MT series in 2021, Yamaha will definitely adjust other models in the production line to comply with Euro5 regulations.

4. The big one has the momentum of moving down the displacement of the TNT series. Of course, the difference is that it is equipped with a Benelli B, which is quite competitive.The same engine as the J600GS, this engine is also a huge breakthrough in Benali. The diversified development of the founder of the three-cylinder has given the industry a great shock and speculation.

5. However, the price of MT-07 is 98w, and car enthusiasts have expressed that they are not optimistic. At the same price, you can choose the CB650 and Z900 with more cylinders, and the same double-cylinder can choose a BMW F900R with a larger displacement. Even if the feelings of many years can be realized, it is difficult to support the excessive price.