- #1
alkaspeltzar
- 354
- 37
- TL;DR Summary
- Trying to determine how the torques balance in a gearbox below
I read this in my college design book, that for a car transmission, if the engine provide T, and the output is RT(ratio x Torque), the difference of (RT-T) must be back on the engine mounting. This example makes sense, I am not questioning that.However, if i have an offset gear drive, like that below, where input gear is 2" diameter, has input torque of 10in-lbs, and outputs to gear of 10" diameter, output torque of 50in-lbs, when i do the math, i don't find the relation above to hold. What i find is the entire housing reacts with 60 in-lbs, but due to reaction of the motor, 10in lbs, the whole unit (gearcase and motor) have 50 in lbs, which is equal to the torque on the output.
Please see attached images. am I missing something? Or does this relationship not apply to this setup of gearbox
Please see attached images. am I missing something? Or does this relationship not apply to this setup of gearbox