Selecting the Right Gearbox for Rotating a 500kg Engine Manually | Expert Advice

[Oje Navarroza]

Hi guys badly needed your help, i need to rotate the engine assy. with a mass of 500 kg using a steering wheel so i need to define what is the right gearbox, please be noted that it will be manually rotated by a person see attached drawing for your reference

I'm hoping for your quick response, thank you so much guys
GODbless

 

[Tom.G]

In which dimension is the engine supposed to pivot? The drawing seems to show it pivoting downward so that it ends up below the shafts. If this is this correct and the engine center of gravity is 320mm from the shaft, then without a gear box the torque on the rim of the steering wheel would be:

(500kg x 320mm) / 750mm = 213kg force on steering wheel rim.

Choose how hard you want the operator to struggle and divide 213kg by that number. That is gives you the gearbox ratio needed. For instance if you want 5kg force on the wheel rim then 213/5 = 43 gearbox ratio. Figure out how you will stop a disaster if he let's go of the steering wheel.

 

[Oje Navarroza]

Thanks Tom G. yeah your right that is my another problem i hope there's a one way gearbox or like a concept with chain block/chain hoist.

 

[Nidum]

Something like one of these rotating engine repair stands ?