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T-REX 450 › Scorpion 6 , Getting tight with heat and loose to​turn cold??????
07-12-2008 09:13 PM  9 years agoPost 1
AUTUMNSUMMERS1

rrNovice

FRANKFORT KY

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When I fly my 450 with a scorpion 6 the motor tightens up when it gets warm. This is turning it by hand. I know the bearings are good
and smooth because I lube them every 20 flights or so, After I land
I can grab the rotor head and it is tight to turn for about 10 sec
and then it loosens right up. This is crazy, I think that its the expansion rate of the alloy VS the steel bearings. Who knows ??????
If any of you guys have this motor check yours rite after you land and see if your is doing the same thing.

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07-12-2008 10:04 PM  9 years agoPost 2
Sean Williams

rrElite Veteran

Santa Clarita CA

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You mean turning the rotorhead to the right? If you turn it to the left the motor doesn't turn...

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07-13-2008 01:54 AM  9 years agoPost 3
R38133

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USA

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Residual EMF

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07-13-2008 05:06 AM  9 years agoPost 4
VANHELI

rrVeteran

Omaha,Nebraska

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Hello,
The stock 500 motor does this as well. To simulate this without power take all three leads of the motor and touch them together. The motor will turn stiff, let them go it will turn freely. I think all brushless motors do this, just some are more noticeable then others. I agree with you though, the first time I noticed it on the 500 I thought my motor was bad.

Dave V.

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T-REX 450 › Scorpion 6 , Getting tight with heat and loose to​turn cold??????
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