My team has our 2-stage cascade elevator built, but we are still hammering out the details of the gearing. We want to use a Cim on a 9:1 versaplanetary together with a 22:15 chain reduction, which is powering a 2.375" diameter PVC drum. The reason we would like to use this specific gearing is that we already have the required parts. When we input the above ratio into JVN’s design calculator, the current draw on the Cim is 19 amps.
My questions are the following: does the calculation factor in the fact that the force to lift the 2 stage is double that of the first? And is 19 amps an acceptable current draw for a Cim?