Hi Ken, A couple of things to check. The resistance of the motor should be same for both directions, ie between red and black should be around 3.5 ohms as well as green and black. Total series resistance of motor should be around 7 ohms. When mine stalled, the motor overheated and one winding was only 1 ohm, definitely a short.
Other thing to check is that you put the brake back together in right orientations. Theres a circular spring inside a nylon cylinder that holds the metal driver from motor and the white nylon gear with tab. If the prongs on the spring are at 10 and 2 oclock, the white tab from gear should go at 12 oclock and the motor driver wings at 9 and 3 oclock. Thats how it is in mine, if orientation like that motor drives gear freely, and gear cannot drive motor. I sent my motor down to LA a week and a half ago for rewinding - so far seems USPS has yet to deliver it, ugh. Running with elevation control only right now, with antennas fixed at 270 degrees. Flipping backwards gives me a few degrees at 90 azimuth as well, but beamwidth of the yagis isnt great so not best solution! Yaesu parts says maybe 4-6 weeks for motors to come from Japan. 73! Dave KB5WIA On Mar 4, 2012 9:00 AM, "Ken Swaggart" <k.swagg...@charter.net> wrote: > After a 3 month wait I finally received the replacement for a damaged gear > in my G5500 azimuth rotor. Replaced the damaged gear, and the gear assembly > smoothly turns both directions. However, when using the motor the rotor > rotates to left at normal speed but right at about half speed. It also > occasionally momentarily stalls when turning right. > > If the motor is damaged wouldn't it affect both directions? There is a > slight aroma of a electrical wiring left over from the failure three months > ago. Suspect I need a motor replacement, but would like to confirm this > with the group. Seems strange only one direction would be affected since > I'd think the same windings are used in both directions. A few years ago > when the motor failed it didn't move in any direction. > > Incidentally, the gear that failed was the plastic gear that the motor > drives (Yaesu part number PE-8601-010-A). The coax caught on a exposed bolt. > > Tnx, > Ken, W7KKE > > > > > ______________________________**_________________ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: > http://amsat.org/mailman/**listinfo/amsat-bb<http://amsat.org/mailman/listinfo/amsat-bb> > _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
