I’m thinking of a sports car vs. tow truck. An engine built for speed, and an engine built for power (torque). How do the engines react differently under extreme conditions? I.e being pushed to the max. What’s built different? Etc.
In: 3108
Power is torque times speed, to make it short. 10 torque x 1 speed = 10 speed x 1 torque, so to speak. And with gearing you can exchange one for the other. That is what a drivetrain and gears do as you shift from 1 to 6.
What people often speak about when an engine has “torque” or “power” is the shaft straight out of it, and at what RPM it delivers said torque.
So the yamaha R1 bike engine has torque of 112nm max and 147kw power, but needs to rev up to 11k rpm for it. The harley davidson 2 liter Milwaukee-Eight 117 has 167 torque but only 78kW power, and max torque is at 3.5k rpm.
Not only it has more torque, but it can deliver it earlier – it is more “torquei”. So it needs to accelerate a lot less to have its peak torque and power.
the yamaha will be delivering that torque at a much faster speed resulting in greater power. Its a much faster bike.
But if you needed to attach it to raise a weight, and you could use gearing, you could achieve almost any lift you needed and the yamaha would have double the power.
I’m thinking of a sports car vs. tow truck. An engine built for speed, and an engine built for power (torque). How do the engines react differently under extreme conditions? I.e being pushed to the max. What’s built different? Etc.
In: 3108
Power is torque times speed, to make it short. 10 torque x 1 speed = 10 speed x 1 torque, so to speak. And with gearing you can exchange one for the other. That is what a drivetrain and gears do as you shift from 1 to 6.
What people often speak about when an engine has “torque” or “power” is the shaft straight out of it, and at what RPM it delivers said torque.
So the yamaha R1 bike engine has torque of 112nm max and 147kw power, but needs to rev up to 11k rpm for it. The harley davidson 2 liter Milwaukee-Eight 117 has 167 torque but only 78kW power, and max torque is at 3.5k rpm.
Not only it has more torque, but it can deliver it earlier – it is more “torquei”. So it needs to accelerate a lot less to have its peak torque and power.
the yamaha will be delivering that torque at a much faster speed resulting in greater power. Its a much faster bike.
But if you needed to attach it to raise a weight, and you could use gearing, you could achieve almost any lift you needed and the yamaha would have double the power.
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