Did a search and found this old thread. New to the site (terrific!). I can install the jack shaft lift; questions I have are with the balance and the tracks. I want the door (call it a typical one-car garage door) to follow further up the wall, then turn up near the ceiling so I can have a car up on the 4-post lift and still open and close the door. I have not messed with garage door springs (I have installed front and rear auto coil springs so I'm familiar with the danger of stored energy).
Questions: Assume I need to move the jack shaft itself high up on the wall -- correct?
I'll need to add a section of rail to both sides of the door, how will this affect the balance? If at all? The door is still going to cover the same distance on the horizotal plane, just higher up. How do you meassure cable tension?
I'd rather learn and do this myself rather than pay the man to come and do it...
I've installed the overhead variety of motors/tracks (replacing already existing equipment) but this is a different ballgame.
Thanks; great site.
Oldsman
Lakeville, MN