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Raptor E325 › Got a squealing mini titan?
02-06-2008 11:25 PM  10 years agoPost 1
FlaG8r

rrElite Veteran

Florida

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Just got a new motor recently (about 20 flights on it) and I noticed tonight that it was squealing on idle up. I knew it couldn't be the new motor, so i thought bearings....then I checked my main gear mesh and it was very tight. Loosened it up properly and the sound went away.

So before replace your motor or bearings, check that mesh.

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02-08-2008 09:51 PM  10 years agoPost 2
skyhawk

rrNovice

belvil mich

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High pitch noise
I was cursed with a high pitch noise in my MT.
There is ample information here at RR about this in
several forums. Finally one flight I was losing
lift, but the motor was spinning up Ok.
The main shaft was getting hot, and I cured the
problem by replacing the One way bearing inside the
main gear. I have many noise-free flights since
after this replacement. This noise haunted me for
several months before I found this flaw.
The bearing had only 70 flights on it when it failed.
Originally I blamed it on my 150 flight JGF 450TH motor.
The 450 is still going great after 200 flights with no
signs of wear or power loss, go figure.
skyhawk2

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