Recent content by sniffy

Cool, Now before I drag out my lava lamp powered abacus, let's make sure I understand the variable thingies here... For the MOI for a hollow cylinder (pipe tube), m= mass of the cylinder structure (in the example I stated 250lbs) r= radius of the cylinder (12" diameter, 6" radius) Only...

How do I calculate the HP (torque) needed to rotate a large cylinder mounted on bearings? The cylinder in question is a 8 foot long 12" diameter piece of pipe weighing a couple of hundred pounds, mounted on two end stubs with bearings. Its the business end of a large flail mower and this...