Alright this isn't about me, although I am also a cheap mofo. The cheapie in question is my friend. The door is around 8'x7' and the springs are extension type.
I replaced one broken spring (I wanted to buy 2 but you can guess what happened) The old spring didn't have any color code, but the length and width were the same as the new 150# spring. I also replaced the carriage of the old genie screw 1/2 hp, because it's teeth were stripped. Also, I remounted the door end of the opener's track as it wasn't centered over the midpoint of the door.
After trying the opener a few times, I noticed the door wasn't sitting equally left/right in the opening which seems to cause some stuttering as the door closed. Also, one of the fixed pulleys is out of alignment by 10 degrees or so, presumably this happened when the opposite side's spring broke and the bad pulley's side took the entire weight of the door.
My questions:
-Does the 150# spring mean that the set is for a door that weighs
300#?-If I replace the other spring with 150# (and replace/realign the pulley), would the springs be TOO STRONG for this door?
-If the springs are reasonably close in their capacity, can appropriate adjustments be made to 'equalize' them?
I just found this n.g., it looks cool. Thanks for any assistance!