Avanti posted:I hate to be a broken record, but I honestly think that you should try an electric screwdriver. For this application, you need high torque/low speed. This is exactly what screwdrivers are designed for. They contain the same kind of DC can motors that your car probably has, just geared way down. I'm not sure, but I bet that if you connected one to the same motor controller that you are using now, it might just work. If not, you can find very cheap PCM fan-speed controllers on eBay that almost certainly would work.
Hi Pete, I tried 2 different battery screwdrivers, one a Dewalt and the other a Craftsman. Both worked fine lifting the bridge, but both did not have the breaking power to hold the bridge when going in the down direction. That's why I went with the drive motor from the little car with the gears, rear axel, it works great taking it up and ok letting it down, I just want it to go slower and land softer.
