So, we've just brought our trap door elevator back to life for a big musical that we're doing in a month or so. It's been in our theater for a long time and hasn't been used for quite a while either. And the people who built it aren't around any more, so we can't ask them how they used it back in the day. But it's a pretty simple counterweight elevator, just using counterweight bricks from a fly system. It's pretty obvious how it works, and we've got it working pretty well and safe now. But preferably, we'd like to run it with a motor of some kind. We happen to have an old "Automatic Curtain Control" device (probably about as old as the trap, 10 or 15 years) that we were thinking about using to attach the cabling to, but it lacks an actual motor. So my main question is, what kind of electric motor would be appropriate to drive this elevator trap? With the trap counter-weighted correctly of course. What horse power should we be looking for? What would it take to raise and lower a weighted elevator trap that would have a total of 200-250lbs of weight on the platform (so 400-500lbs total for both platform and counterweight?) Any suggestions or ideas anyone has would be great. Thanks!