Sounds pretty close to what I had except mine was severe and the 3-1 would disarm, and the glitch was severe too. I got 3 HS-55's on order (servos). It didn't happen all at once, it was progressive in nature where it would finally cause crashes.
ORIGINAL: mrasmm
flight time just under 10 min with a 1250mAh pack with 837 mAh put back in after charging (a little less than normal... I usually put 1050mAh back in including the amount waisted to discharge, which is about 120mAh over the 1 hour charge, which gives me an average usage of about 75%)
first 3 or 4 min max climbout from a hover about 1ft per sec
middle 3 or 4 min max climbout from a hover about 1/2 foot per sec
last 3 or 4 min would only sustain a GE hover at full collective
batt temp when done 94.6F OC battery voltage after flight is 11.4v and I always cut my pack off at 10v under load
motor temp when done without canopy 134F
I found it kinda weird, but the heli would not arm without both the ch3 and the ch4 connected =P
Anyways, so I hooked up just the main motor and no servo's or the tail motor were hooked up. I ran for about 5 min and the motor temp was 147 point something, so basically 148 =( The throttle was all the way up, and I set the servos for about 6 or 7 degrees pitch.
I also had a weird glitch while I was testing it... the main motor bumped out for a milisecond and then when it came back up reved higher and pretty much stayed there. Is that something with the motor, or something with the 3 in 1?
here is a pic of the test. You can see how the motor is arcing a bit.
I also included a pic of my current pinion spacing.