1 CIM motor going through a 12:1 versa planetary driving a 2 inch pitch diameter(1 inch R) sprocket.
Can lift a 62.5 pound(1000 ounce) load at 335RPM or 3 feet per second.
At 35 amps and 60% out of 64.7% max motor efficency.
Torque at motor 83.3 oz-in. At sprocket with no accounting for losses in 1000 oz-in at a lever arm of 1 inch.
TL
R CIM motor handles it like a boss! 1 Mini CIM should be able to lift the load, but slower. 2 Mini CIMs should take it like a champ.