Move to Japan, where the voltage 15% lower and should make the motor
run slower. Equally impractical: Install variable frequency drive
and a soft-start circuit to bring up the motor voltage frequency
gradually over a 1-2 second period to eliminate the jerk. You should
be able to get some of the parts to build one of these from old
computer power power supply because they all contain 700-volt
transistors (stack a bunch to increase the amp rating; MOSFETs or
those cool IGBFETS found in some newer Dell power supplies are easier
Is there some kind of spring mechanism you can install on the arm that
goes between the opener and the door, to absorb the shock of the
initial jerk? My Stanley has a coil spring for this, and I believe it
could be changed for a softer one by removing 2 metal rods. I realize
that this isn't as simple as the VFD/soft start circuit mentioned
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.