10-03-2017, 03:34 AM
I recently rebuilt my Viel grinder with a smaller (3 1/2” instead of 6”pulley). The driven, top pulley is the original 3 1/2”.
Many years ago I purchased a right angle adaptor for my electric drill. The adaptor could be installed two different ways: one gave higher speed and lower torque; the other gave lower speed and higher torque.
For ease of calculation, let's round the pulley diameters to three and six inch diameters and use 1000RPM. My gut feeling is that the smaller pulley, with lower surface feet per minute will produce more torque, however, my gut feelings are not always very scientific. Once again, my high school math background from fifty yeats ago is not up to the task.
Help will be most appreviated. What is the effect on torque from using the smaller pulley?
Thanks,
Ken
Many years ago I purchased a right angle adaptor for my electric drill. The adaptor could be installed two different ways: one gave higher speed and lower torque; the other gave lower speed and higher torque.
For ease of calculation, let's round the pulley diameters to three and six inch diameters and use 1000RPM. My gut feeling is that the smaller pulley, with lower surface feet per minute will produce more torque, however, my gut feelings are not always very scientific. Once again, my high school math background from fifty yeats ago is not up to the task.
Help will be most appreviated. What is the effect on torque from using the smaller pulley?
Thanks,
Ken