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Other › Cyclic servo /Quantom motor getting really hot
05-30-2012 03:23 AM  6 years agoPost 1
Tommy8275

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Mount Juliet, TN

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Why my cyclic servo /Quantom motor on my Goblin getting really hot? Im using JR8717HV for all cyclic. I only did flight circle and hover not even got on my STN 1/2 yet and it the first time on the air

Tommy K

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05-30-2012 06:14 PM  6 years agoPost 2
integy2

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California USA

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Something wrong, I got same servos.
Barely get warm.

(Good flight end up with ...... big smile :D)

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05-30-2012 07:02 PM  6 years agoPost 3
jimjag

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houston texas. usa

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Did u check and see if u aregetting binding atfull range of travel...both positive and negetive...orover travel on servos usually it will be like a humming noise or they will get hot just running them on the bench for awhile if they are binding

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05-30-2012 08:57 PM  6 years agoPost 4
Sam2b

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Tacoma, WA

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Try using 6v to the servos and see what happens.

_Sam B_

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05-30-2012 09:13 PM  6 years agoPost 5
Tommy8275

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Mount Juliet, TN

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test flight right now but still have the same problem, I did change the new motor from Quantom to Scorpion HKIII 4035/530 Both motor are new and the motor still hot as Quantom/servo. Called HeliDirect from the field they said its normal. I believed servo got hot cuz get heat transfer from motor.

Tommy K

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06-07-2012 08:58 AM  6 years agoPost 6
esmoglo

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Florida USA

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I have the Outrage brushless servos and Scorpion LE motor, I too have noticed the servo next to the motor is quite a bit warmer than the other cyclic servos. Seems normal considering the heat these motors can produce. I will be trying the Quantum 500KV motor in the Goblin to see how it performs and post back.

Ugly can be fixed stupid is forever!

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06-07-2012 09:45 PM  6 years agoPost 7
eddiscus

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Dumont, NJ-USA

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Tommy8275
What esc are you running?

I have been using scorpion 130 on the goblin first with a 4525-520 LE (crashed on maiden due to esc shutting down). Motor was hot to the touch 150-160F. Replaced with scorpion 130 esc and 4525-520 ultimate. Motor is still hot 150-160F within manufactures spec.

On my whiplash I have the 4525-520le motor and helijive esc and that runs way cooler than the birds with the scorpion esc. BTW after 20 plus flights the Heli jive shutdown as well and would not reset.

Seems the 4525 and similar delta wound motors are too much for 120-130 amp esc's. Just an opinion.

Logo Xxtreme 800
Logo 700
Citizen 142
Synergy 766
TDR 2

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06-07-2012 10:10 PM  6 years agoPost 8
esmoglo

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Florida USA

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I run the Scorpion 130 ESC with 520LE runs fine, I remember when guys 2 years ago ran the CC 85HV with no issues at all.

Ugly can be fixed stupid is forever!

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06-07-2012 10:42 PM  6 years agoPost 9
eddiscus

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Dumont, NJ-USA

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Seems to be luck of the draw then.

Logo Xxtreme 800
Logo 700
Citizen 142
Synergy 766
TDR 2

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06-12-2012 01:05 AM  6 years agoPost 10
esmoglo

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Florida USA

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I removed the Scorpion 520LE motor and installed the Quantum 500KV motor and I can say with certainty its way hotter on the back servo now then it was with the 520LE installed. The Quantum 500KV motor is larger so it’s now closer to the servo then the 520LE was. It also seems the Quantum 500KV motor runs a bit warmer then the 520LE did. I really can’t see any performance gains with this motor to be honest. I may put the 520LE back in.

Ugly can be fixed stupid is forever!

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06-13-2012 03:45 AM  6 years agoPost 11
Jag72

rrProfessor

South of Boston

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Quantum motor
I can't see how your quantums are running hotter than the scorpions...I have several flights on 2 machines that are almost identical except for the motors..one being a 4525le and the other a quantum 4530

The quantum never gets over 120 even after a hard 3d smack down flight...same flight with the scorpion machine nets temps in the 140-150 range and after flight the scorpion gets to almost 175-180

The quantum pulls hard...more powerful than the 4525le for sure...the 4530 quantum is right on par with the 4530le scorpions I fly ..except the 4530le Scorpion runs very hot

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06-13-2012 05:27 AM  6 years agoPost 12
esmoglo

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Florida USA

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Guess its the luck of the draw my Quantum 500KV motor is hot as heck, don't like it my 520LE is way more powerful. I will be listing my Quantum 500KV motor for sale in the RR classifieds as soon as I take it off the heli.

Ugly can be fixed stupid is forever!

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06-13-2012 03:18 PM  6 years agoPost 13
Jag72

rrProfessor

South of Boston

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motors...
something is not right then...the data logger info for the Quantum definitively shows that it's a monster motor...and peaks at higher wattage output than the 4525le ...so that doesn't sound right

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06-13-2012 03:18 PM  6 years agoPost 14
haq0901

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Miami, FL USA

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My guess is you still haven't tried a new gear ratio on the goblin like we mentioned to you in the other forum....??

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06-13-2012 04:13 PM  6 years agoPost 15
Ronald Thomas

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Gainesville, Fl, USA

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Gear ratio is imperative to get the optimal power for a given setup. If it is not setup right, the new motor will be no better unless the given KV falls in the "sweet spot" for the setup you have now. A simple pinion change will do the trick. Give you more power as well as have a cool running motor.......Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-13-2012 04:31 PM  6 years agoPost 16
esmoglo

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Florida USA

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So you are saying to fly it with the 23T VS the 21T that I have installed now? The kit came with a 22T. Again with teh 21T pinion installed and the 130HV its one HOT motor. The 520LE wiht the 21T pinion is not quite as hot. I will fly it today and take a temp reading and post what I have.

In theory the HK-4525-520KV Limited Edition motor is wound with a single strand of 1.4mm copper wire for high efficiency VS the Quantum's thin copper wire. I fined with the commander 130HV the heli pulled way harder and felt way more powerful with significantly less heat VS running the Quantom 500KV motor.

Ugly can be fixed stupid is forever!

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06-13-2012 04:39 PM  6 years agoPost 17
rexxigpilot

rrProfessor

Florida

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What timing are you using? remember Delta wind needs little to no timing advance to run best (4°-5° typically), unlike a Y wind that needs more advanced timing (12°-18° typically) to make power. That's why Delta motors are used in robotics where the motors are used in both directions.

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06-13-2012 04:40 PM  6 years agoPost 18
Jag72

rrProfessor

South of Boston

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gearing --
I'm flying the Quantum 4530 with a 22t pinion and spinning the head at a governed 2200 ...I beat the snot out of mine and have a full 15.5 degrees of pitch...

I do a LOT of hard piro flying and use a lot of collective at times...after a 5 minute 3d flight I have yet to get the motor hotter than 120 degrees at landing...this is with the canopy on and ambient temp of 65-70 though

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06-13-2012 04:43 PM  6 years agoPost 19
haq0901

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Miami, FL USA

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Verify the timing as mentioned above, and at least try the stock 22t also.

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06-13-2012 04:43 PM  6 years agoPost 20
haq0901

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Miami, FL USA

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Jag what bird are you using to measure results?

In my experience the goblin airframe which provides little cooling has gotten my motor to 150f. Yet my 700e has only seen 125f with same gear ratio.

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