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Top Speed of a Bike

Question asked by gowthamanbu in #Coffee Room on Aug 3, 2012
gowthamanbu · Aug 3, 2012
Rank D1 - MASTER
I want to know that which specification of a bike decides the Top Speed of it? CC determines the power. What determines the top speed? BHP? Gearing? Am not clear with it thats why asked here.
It'll be more useful when you compare a Indian bike model specification for explanation. Posted in: #Coffee Room
Rank D1 - MASTER
crankshaft and the gearings of bike matters , but at the same time the efficiency may decrease
Sanoj Rajan
Sanoj Rajan · Aug 4, 2012
Rank D1 - MASTER
The top speed depends on various factors.
To start with, the engine volume/capacity. Or as it is said 'cc'.
Higher it is, Higher the power, and higher the speed.

Then comes into play the 'LOAD' on it. It includes the weight of the bike, weight of the driver and pillion, and many other factors. As the load increases, the speed decreases.

Then the 'Loses'. Frictional Loses in the engine, Gear box, Chain/propeller shaft, etc.
Higher it is, Lower the speed.

Then comes the shape of the body. The more aerodynamic it is, the higher speed it can touch. Because, if its not aerodynamic, the air in the surrounding will offer friction, and reduce the speed.

Then the tyres. Now, this is something that everyone doesn't know. Traction (between road and tyre) is an important feature for the safety. Higher traction ensure higher safety. But lesser the amount of traction, the higher speed can be obtained. Now, in indian vehicles the traction control thing is rarely found. Because in low speeds, the change is very infinitesimal. But at higher speeds, say, 200kmph, you will be able to note the difference. The traction control system can be found in German cars.
white_hat · Aug 4, 2012
Rank C3 - EXPERT
Higher the bhp , higher will be the top speed.

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