Why should I not change gears in a vehicle whilst applying power to said gears?

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I ride my bike a lot and if you change gears while pedaling you’re met with a lot of resistance and the bike creates a very audible and tactile *crunch* when the gears shift which is regarded as you making a mistake and a sign of a novice rider. And, while I’ve never driven a manual transmission car, I do know that you should also disengage the accelerator when depressing the clutch to switch gears and the transition is smoother if you get really good at this just like on a bike.

I understand that changing gears while accelerating is “bad” but I do not understand what damage is being done and why it is being done. It’s also odd to me that I can’t switch gears while applying power to a vehicle, but I can switch gears in a stand mixer without needing to shut it off.

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4 Answers

Anonymous 0 Comments

In a car you won’t damage anything because the clutch decouples the drivetrain. This also means the engine will suddenly have almost no load on it, so if you press the clutch, but don’t disengage the throttle the revs will quickly rise to the max.

Won’t damage anything during shifting, but if you then let off the clutch with the revs at full, you’ll get a sudden jerk of acceleration and some unnecessary wear on the clutch.

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