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Old Oct 12, 2013, 12:31 PM
Registered User
Joined Sep 2012
344 Posts
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UM T-28 Question

I have a UM T-28 that has some kind of motor problem.
It seems that it is flying slower than it used to (slower than my Champ!)....... and key thing is that the motor/gear make some kind of clicking sound when it runs. Also, motor will sometimes stop when I first start it up and run slow.
I did try cleaning out the gears once or twice, but no great success.
Is it likely motor noise (bearings?) or just dirt/other crap in the gears?
Thx.
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Old Oct 12, 2013, 01:52 PM
Y=C+I+G
cmdl's Avatar
United States, CA, Rosemead
Joined Jan 2012
7,408 Posts
could be:
1. time to get a new batt
2. dirt in gearbox
3. brushed motor dying
ask here too: http://www.rcgroups.com/forums/showthread.php?t=1282886
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Old Oct 12, 2013, 04:42 PM
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Joined Sep 2012
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Thx CMDL.
Note that I use several batteries, and is the same. But is definitely more pronounced when batteries get low.
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Old Oct 12, 2013, 04:44 PM
buyer of the farm
United States, FL, DeLand
Joined Mar 2009
4,033 Posts
The motor is a brushed motor and has a definite and short lifetime. I've replaced my Vapor motor about six times.
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