Another thing you could do to retrofit an old system would be to buy the GAL MOVFE linear (just the motor, controller, sensors) and then install it similar to how a SmarTraq is installed. The only downside is that you also have to mount sensors and magnets. I've seen this done on Schinder
Have you done this? I have been thinking about this exact thing, I actually called GAL and discussed with one of there engineers. I think I may get the parts and attempt this. GAL is releasing a harmonic door operator retro fit kit soon to do this also. I just would rather keep the HD hardware and retro fit the motor and drive system.
