Another thread question whether Stihl or Husky has better torque. Some will argue that the term "torque" doesn't apply to chainsaws. So what do we refer this low-end power too? There is a difference........just want to know the best terminology.
Originally posted by glens
torque is a twisting force. In a typical engine it's the amount of twisting force present at the crankshaft journal.
Japanese motorcycles historically produced their
best torque
at higher RPM;
Glen
Originally posted by RandD
Find attached an example for the measured power output and torque for some machines. The measurement was done on a certified dyno for type approval.
You have the maximum power output when the product of torque and engine speed reaches the maximum:
Pe [kW] = Md [Nm] * rpm [1/s] * 2 * 3,14 / 1000
Example: 4,73 [Nm] * 9500 / 60* 2 * 3,14 = 4703 W = 4,7 kW
PS: The PS-7900 RS is a limited edition (300 pcs.) with selected piston and cylinders.
Originally posted by flipjack
Wow! Who are competitors A & B? (or will you get sued if you tell us) ...
... Also, I'm curious as to what the torque curves look like below 6500 RPM. Are they relatively flat, or do they drop off.
Originally posted by WoodTick007
Its my understanding that if two motors have the same piston size, resulting in the same compression ratio, but different crank stroke lengths. That the motor with a greater crankshaft stroke will produce more torque. I believe that this is greatly related to the inertia that is created by the greater dementions of the rotating assembly.
Maybe Rocky will have something to add. And why wouldn't he?
Maybe I should have said "produced their torque best at higher RPM"?Originally posted by Crofter
Glen I am surprised to see you applying the term "best" to describe torque especially in a thread on defining torque. Torque values can be only properly defined as being "more" or "less" (or higher or lower); you are usually a stickler for being precise! lol!Originally posted by glens
Japanese motorcycles historically produced their best torque at higher RPM;
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