Just curious if anyone knows what percentage of horsepower/torque is lost on a vfr between the crank and the rear wheel?
Copied without permission Crank HP vs. True Rear Wheel HP That's a tough one - and LONG.... The short? Take crank HP, subtract 14.6% (please don't email me and ask - I won't answer - search SAE and old Yamaha), take that, and subtract around 10% to 15% and you'll get about True HP at rear wheel. The actual formula contains a curve for power loss through gears and there SHOULD be another curve for power lost in a tire (it's the majority of loss on a motorcycle.... Remember, too - that you are only likely to get a crank number from the manufacturer and that's probably a "good" one that the marketing department is providing... (sound of blowing up a marketing and sales balloon? That's not everybody - but it has happened - leaving names out! When someone gets engineering data from engineering...... give me a call -
