What motors are you using for your lift?

[Walter Deitzler]

We are using a Mini-CIM hooked up to a 30:1 versaplanitary gearbox. It lifts our whole 70inchs in about 4 seconds and can handle up to (theoretically) 300 lbs. (We ran some tests to see how much it could lift, but we broke the scale before the motor failed.) We also have no drift simply due to the ration we are using, it being to hard to turn without a substantial amount of force trying to back drive it.

Good luck!

[Joshua Sicz]

Originally Posted by Walter Deitzler

We are using a Mini-CIM hooked up to a 30:1 versaplanitary gearbox. It lifts our whole 70inchs in about 4 seconds and can handle up to (theoretically) 300 lbs. (We ran some tests to see how much it could lift, but we broke the scale before the motor failed.) We also have no drift simply due to the ration we are using, it being to hard to turn without a substantial amount of force trying to back drive it.

Good luck!

Is this with all 6 + bin?

[BlueOps4216MrG]

We are using 2 snowblower motors direct driving opposite ends of a shaft with a pulley fixed in the center. It is essentially a winch. We only need to lift 2 totes max. at a time.

[jwfoss]

FRC558 is running a custom 18:1 worm gearbox with dual mini CIM input and for now a 4" diameter drum.

[Bryce Paputa]

Two CIMs on the lift. Jumping on the six CIM hype train here.

[GeeTwo]

One CIM on an 8.45:1 gearbox (same as on the KOP for interchangeability), geared down 32:15 by chain, then lifting using two #35 chains on 15 tooth sprockets. It has several times the lifting power we'll need, because we're going to try it without a brake. We're only using three CIMs for drive, so we are going to check the current draw when we hold the maximum load (4 totes) and add another CIM if it's much over 20A, or if we experience too much heating during practice. On the curves it looks like it'll be about 14A, which means about 170W, all going to heat when holding station on four totes. I really suspect that we are going to build a brake on Thursday and Saturday.

[Ether]

Originally Posted by GeeTwo

On the curves it looks like it'll be about 14A, which means about 170W, all going to heat when holding...

14A @ 0 RPM is more like 18W.

[Walter Deitzler]

Originally Posted by Joshua Sicz

Is this with all 6 + bin?

We have had some issues with the chain driving the shaft skipping after it is loaded with 3+ totes, but that is a tensioning issue, not a problem with the motor. We have pulled over 100lbs of weight up with it (which is more than 6x7.6lbs (totes)+ 8.8x1 (bin)) We will be doing some actual testing with some totes once the tensioning is worked out and the chain no longer skips.

[TikiTech]

We have set up two opposing VexPro 2 speed ball shifting transmissions.

One has 2 CIM’s the other is only used as a shift on the fly ratcheting system.
It lined up so nicely putting the transmissions together..

Gear ratios of 8.33:1 and 3.6:1 on a custom 3d printed 1” diameter spool and strap guide system.

Per the JVN calculator, our low gear should move our 60” lift system fully in approximately 2 seconds with a 40lb. load and a stall load of 570lbs at 10amps. The high speed, which I doubt we will use much, runs the loaded lift at less than a second with a stall load of 250lbs at 19 amps.

It is “overkill” and so is the lift system that goes with it..

We will be adjusting speeds this week to fine tune the lift. Sure do not need to launch those totes into the stands..

Good luck to everyone this year!
Aloha!

[Sperkowsky]

we are using 2 cim's that run through 76 to 1 planetary gearboxes. They have been a pain to mount but we got it mounted yesterday. Now we just need to make the elevator plate and the bracket that connects it to the fork