- #1

bugdry

- 7

- 0

I hope that it is okay for me to ask this here. It has been a long time since i did mechanism analysis.

I have what I hope is a quick question. I calculate the torque required to rotate crank AB and therefore lift up the link BC to be 88lb-in. I assumed that link AB has no weight, no friction at the joints and i kept the length of BC at 10.5". I am trying to determine the minimum motor size i need to lift link BC, with link AB moving at a maximum of 60rpm.

I know i am also missing the inertia load to start the rotation. But i am just going for a ball park torque figure for now.

Thanks in advance for your help.

I have what I hope is a quick question. I calculate the torque required to rotate crank AB and therefore lift up the link BC to be 88lb-in. I assumed that link AB has no weight, no friction at the joints and i kept the length of BC at 10.5". I am trying to determine the minimum motor size i need to lift link BC, with link AB moving at a maximum of 60rpm.

I know i am also missing the inertia load to start the rotation. But i am just going for a ball park torque figure for now.

Thanks in advance for your help.