What kind? I've never even considered the idea that pneumatic engine hoists existed. Unless they're crazy expensive it makes a lot more sense to me in any automotive situation. No electric motor/cord/circuit to worry about, easily vary the speed.
Anyone else know who sells quality ones new? I'm curious how much they go for.
Mine is a 1/2 ton Yale. Last I looked, retail was $3000 or so, but I got it for $250 on CL. The guy I got it from got it from a steel yard many years before.
There are used ones out there for reasonable prices. Here's a 1 ton for $250 today:
https://newjersey.craigslist.org/tls/4872921075.html
First off, chain doesn't ever cross over in the drum, so there's no worry about winding it correctly, or getting split wires piercing your fingers, or having the load drop a fraction of an inch when the cable shifts. I'll take chain over cable any day of the week.
Being pneumatic, it is variable speed. This is a HUGE improvement. The biggest issue I had with my electric hoist was the herky jerky motion.
Pneumatic chain hoists either have cable or pendant control. The one I linked above has cable control. There's a pivoting arm which two cables are hung from. Pull one side of the arm down and the chain goes up, pull the other, and it pays out chain. Something at each end of the chain bumps into this arm causing it to gently auto-reverse at the end, instead of break.
Pendant controls are like the wire control on the HF hoist. Mine has a cable that holds a few air hoses and an up and down button. They drive air cylinders on the side of the hoist that then pivot the same lever. So, so long as I can reach the hoist, I can control it directly too, without using the pendant (since I use mine to move things to/from a loft, I can control it from "upstairs", and use the pendant downstairs).
These do draw a lot of air though, but you're not using it continuously for that long anyway... The pendant cylinders also leak a little on mine, so I have a valve downstairs that shuts off the hoist's air supply when I'm not using it.
There are variable speed electric chain hoists now too, but they're new technology, so I haven't seen one used for an affordable price yet.