Recent content by BSZ

1. What material does it contain, liquid or solid? Solid 2. What is the viscosity, or the rest angle of the material surface? 30 degrees 3. What mass, volume or level of material is in the drum at the start? drum is full, 375lbs 4. What is the mass of the empty drum? its a fiber drum so only a...

The thing is I know it is going to take way more than 3 ft-lb to rotate the drum. I am rotating it on the perpendicular axis not the parallel axis. I haven't bothered with figuring out the extra torque need due to friction because the amount of friction from the bearings is minor. That is why I...

I was just typing out calculations for motors, gear boxes and sprockets while I tried to figure out why my calculation come out with 3 ft*lb to rotate this drum. I am going to motors, gear boxes and sprockets as needed. Alpha is what is going to change with different mechanical components. Just...

I wrote down the wrong RPM. The 30rpm is the output of the gear box I am looking at, the out put of the driven sprocket is about 9rpm which will be turning the drum. I want to make sure the drive system that was picked has enough torque to turn the drum. But it looks like I will have to pick out...

Sorry my thoughts were to see what formulas you guys came up with before sharing mine. I attached my calculation sheet. The top half is my motor and gear box calculations.

I need to figure out the torque required to rotate a drum. The drum is being rotated on its perpendicular axis. I am designing a drum dumper so the drum starts upright and is rotated 135 degrees to dump its contents into a hopper in the floor. I want it to take about 5 seconds to do the rotation...