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I hear this all the time but I've never understood why?
The chain and wheel would spin the same amount going the same speed. Does it have to do with how it breaks traction or reacts with no load (for example between bumps).
The chain and wheel would spin the same amount going the same speed. Does it have to do with how it breaks traction or reacts with no load (for example between bumps).
But that's an awesome question and hope someone more able to describe this chimes in.
The Shop
Both riders are going the same speed, one with a low gear/high RPM, one with high gear/low RPM, nothing outside the engine changes, the chain travels at the same speed since the rear tire travels at the same speed.
Gyroscopic effect: A slower spinning motor has less of a gyro effect, meaning the bike will feel more nimble.
Suspension effect: Lower RPM allows the suspension to compress easier, allowing the suspension to effectively work better. Every power pulse of the motor causes the rear suspension to stand up/extend, and by running the motor at a lower RPM you are lessening that effect. This happens because of physics.
Traction: Lower RPM means more traction because there are less power pulses per revolution of the rear tire. Each time the piston is in the power stroke, it micro jults the rear tire and "upsets" it. Lower RPM is also less prone to traction runaway since there are longer gaps between the power pulses. These are one of the reasons why two strokes offer less traction than 4 strokes, in general. A 2 stroke pulses twice as often as a 4 stroke at the same engine speed, and it's even more pronounced since you run the rpm's so high on a 2 stroke.
Hope this makes sense. I really want some technical wizard to come in here and school all of us lol
Also in ur example low gear high rpm is making more power and sending more power to the rear, lower rpm is less power and more controlled less wheelspin less power pulses, less touch, less engine breaking when making throttle adjustments, less jerky.
Post a reply to: Why do the supsension work better at low RPM?