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HK 450 pro question/help

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HK 450 pro question/help

Old 03-30-2012, 10:06 PM
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Default HK 450 pro question/help

I picked a hk 450 pro recently, torque tube gears were stripped, now replaced, made adj. spooled up approx 10 - 15 sec, outrunner motor was quite hot, and jittering when attempting to spool again, replaced ESC today, seems to have same issue.
Also, when spinning main rotor by hand, feels like a " brake " effect, if I disconnect the motor leads, this does not happen, is this normal ???

Thanx

Bob

Old 03-30-2012, 10:11 PM
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Default RE: HK 450 pro question/help

your problem from the way I see it is that you have the motor too tight agenst the main gear back the motor off some and it should spin more freely so not so tight against the main gear
Old 03-30-2012, 10:15 PM
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Default RE: HK 450 pro question/help

the motor is not misadjusted, it spins very freely, again, motor jittery and getting very warm in just seconds, when i disconnect the motor leads, it spins quite freely at that point.........................motor going perhaps ??
Old 03-30-2012, 10:18 PM
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Default RE: HK 450 pro question/help

sounds about right. is it all stock? if not what motor kv do you have and esc amp
Old 03-30-2012, 10:25 PM
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Default RE: HK 450 pro question/help

as i see it, i beleave it is all stock, turnigy motor i think.........is that a standard for this bird ???
i bought a new castle 36 amp esc today, still acting up......
Old 03-30-2012, 10:32 PM
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Default RE: HK 450 pro question/help

sorry I dont know much about that brand or wht comes with it but yes I would say your motor though but someone may know better but that would be my guess also I belive you need a 40amp esc or bigger for 450heli
Old 03-30-2012, 10:33 PM
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Default RE: HK 450 pro question/help

how many cells are you using
Old 03-30-2012, 10:36 PM
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Default RE: HK 450 pro question/help

was told the 36 amp esc was just fine, still actink the same as the original esc was doing
Old 03-30-2012, 10:37 PM
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Default RE: HK 450 pro question/help

I am using a 3 s 30 - 35 c new pack, today
Old 03-31-2012, 05:46 PM
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Default RE: HK 450 pro question/help

OK HERE IT IS,,, WENT TO MAIDEN THE T REX WANNA BE, SEVERE TAIL WAG, CANT TAME IT DOWN, GYRO MAYBE ??? HK 401B GYRO.....IDEAS GUYZ ??

tHANX
BOB
Old 03-31-2012, 06:48 PM
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Default RE: HK 450 pro question/help

Hi Bob,
  Your problem is that the gain on the gyro is too high.  I usually set the dial on the gyro gain to full CCW and adjust my channel 5 (Gyro Gain) to around 25 to start on rate mode, and 75 to start on Heading Hold mode.
If the tail wags slowly, then I increase the gain (decrease the number on rate mode, or increase the number on HH mode).  Please keep in mind that channel 5 is sending a servo position to the gyro and center is neutral.  The extents of travel of that servo would be Rate in one direction and HH in the other.
I still tend to get confused trying to get my head around that one.
Bryan
Old 03-31-2012, 06:50 PM
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Default RE: HK 450 pro question/help

I should probably add that if the wag is very quick, the gain is too high, as you have described, you should set your gain values to closer to 50% (JR, Spektrum) or 0% on Futaba / Hitec.
Old 03-31-2012, 09:01 PM
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Default RE: HK 450 pro question/help

im not understang that very well, my xmit is mt eflite................................
Old 05-20-2012, 02:41 AM
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Default RE: HK 450 pro question/help

Hey there Bob,

Have you applied Robs Hot glue fix to the gyro?

[youtube]http://www.youtube.com/watch?v=6TPSZtg5ZfY[/youtube]

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