JR 9100s issues
08-06-2010 | 09:38 PM
#16
I too run JR 9100 servos in my buggy. I've been using a 9100s for steering and a 9100t for the throttle (yes I know the S & T don't stand for steering and throttle). These servos have been in my Losi 8IGHT since I built it for the 2008 racing season.
During the 2009 season the steering servo began getting some play in it. Upon investigating I realized the servo saver was built way too tight from the Losi factory and it never really protected the serve as it should have. I corrected this by replacing the saver with new parts and building it myself.
Now in the 2010 racing season my steering servo has, as expected, gotten worse. It's now to the point where the steering jitters constantly, with the front wheels shaking back and forth rapidly, whenever you pick the vehicle up off the ground. I decided to replace it with a second 9100t rather than going with another 9100s. The T has plenty of speed and a stronger gearing so hopefully it'll hold up better.
I don't blame the JR servo in this case as my servo saver was not set properly from the factory and it took me an entire year to realize it. My existing 9100t throttle servo has been flawless and still has zero play.
During the 2009 season the steering servo began getting some play in it. Upon investigating I realized the servo saver was built way too tight from the Losi factory and it never really protected the serve as it should have. I corrected this by replacing the saver with new parts and building it myself.
Now in the 2010 racing season my steering servo has, as expected, gotten worse. It's now to the point where the steering jitters constantly, with the front wheels shaking back and forth rapidly, whenever you pick the vehicle up off the ground. I decided to replace it with a second 9100t rather than going with another 9100s. The T has plenty of speed and a stronger gearing so hopefully it'll hold up better.
I don't blame the JR servo in this case as my servo saver was not set properly from the factory and it took me an entire year to realize it. My existing 9100t throttle servo has been flawless and still has zero play.
the Good ol JR/ACE Twitch.......its the poor brass bushing's they use in the top case which allows the gear's to walk around and essentially bind up and burn out the motor's.
And don't you love the degrading msg's Horizon included when you get the servo back, Insisting it was something YOU did Wrong.....
08-22-2010 | 12:10 PM
#17
Yea 9100s almost lasted a year, in the throttle position. My 9100t is still going strong in steering postion. Sent the s back to horizon, will see what happens. Next question, Would the hitec 7985 be a good replacement for the s? About the same tq, just a litttle slower. This going into the throttle hole. Or should I give up a little speed and a little more money and just go with the 7955?
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