Quote:
Originally Posted by Jared Russell
FWIW, we seriously contemplated adding a third RS775 to the bottom carriage after SVR to improve loaded speed when carrying several totes.
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Fair enough. :-)
Quote:
Originally Posted by Cherry254
The goal was to have an elevator fast enough and powerful enough such that we were never waiting on the elevator while stacking. Two RS775s have a greater power to weight ratio even with the additional half pound from the pneumatic brake assembly than one CIM.
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Sounds like a worthy and intuitive goal... necessary for the ~8s 6-tote stack from RAMPage (which is just absolutely fabulous!). Having thought about the pneumatic brake aspect a little more, it really isn't that much complexity/risk... not any worse than (and very similar to) a pneumatic shifter. Had you guys used one before, or was it essentially all-new?
Quote:
Originally Posted by Cherry254
The gearbox transmits power to all four corners of each carriage. Its hard to tell from the render but each pair of motors drive two sets of pulleys which transmit power to the left and right side of the elevator.
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Makes sense... I was having a hard time imagining how it could work without something like what you mention. I think I can see a bit of the 'hidden' pulleys now that you note them.