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HelicopterRadio - Servo - Gyro - Gov - Batt › align 620 servo hot!
06-04-2010 02:21 AM  7 years agoPost 1
helicrackhigh

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texas

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I am running an align gp 750 with ds 620 on a 50 class nitro,the tail servo getshot,not hot to burn but really hot after a flight,is this normal?

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06-04-2010 05:09 AM  7 years agoPost 2
JAYHELI

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Northeast Pennsylvania

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the last one i had get hot went bad

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06-04-2010 05:19 AM  7 years agoPost 3
philip 01

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ft worth

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what about the 650?

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06-04-2010 05:28 AM  7 years agoPost 4
baddynergy

rrElite Veteran

sierra madre, ca- usa

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Gyro gain too high or linkage binding are usually the main culprits.

**Unattended children will be givin a shot of espresso and a puppy**

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06-04-2010 07:30 AM  7 years agoPost 5
helicrackhigh

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texas

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I had a 650

it had ds 650 on it ,it made noise all the time and got hot too,so I changed it with 620 and the noise stopped.It still gets hot and no binding,I may set gyro gain lower,and limit down more,.so,how hot should the tail servo run on this set up,?

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06-04-2010 02:20 PM  7 years agoPost 6
Richardmid1

rrProfessor

Leeds, England

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It should only feel slightly warm. I presume your not running it on higher than 5v? If you are running it on 5v it is almost certainly vibration. Make sure everything is balanced in the head and tail and balance the engine fan (most important). The ideal gyro mounting from bottom to top should go: gel gyro pad (if you have any), metal plate, thin gyro pad, gyro, then lightly strap it down with a velcro strap.

60% of the time, it works every time!

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06-04-2010 06:07 PM  7 years agoPost 7
helicrackhigh

rrApprentice

texas

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thank's

I will try balancing everything,it all seems balanced now,it is flying with no vibrations.and I have align 2 in 1,I will check voltage.
voltage is at 5.8v.and all seems to be balanced,engine is a little rich but running good.

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06-06-2010 11:56 AM  7 years agoPost 8
Richardmid1

rrProfessor

Leeds, England

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The 620 will get hot at 5.8v, you need a step down lead between the gyro and servo to bring it down to 5v.

60% of the time, it works every time!

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06-06-2010 01:45 PM  7 years agoPost 9
helicrackhigh

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texas

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thank's

I have been told it will work,but it is worth a try,and will that cause the 650 to get hot also?Had one on it and it got hot and started making noise,might have went out.

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06-10-2010 03:57 AM  7 years agoPost 10
helicrackhigh

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texas

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went out

620 is out.put 650 back on it,but since it got hot too thinking it may go bad also.Will order step down regulator,thank's

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06-10-2010 12:59 PM  7 years agoPost 11
Helijockey

rrKey Veteran

150 miles from somewhere

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Richardmid1 aren't the 650 and 620 rated at 6v? I'm going to be using a 650 on my trex550 3G and was planning on running it at 6v.

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06-14-2010 01:47 AM  7 years agoPost 12
helicrackhigh

rrApprentice

texas

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installed regulator

I installed step down voltage regulator,now servo has between 4.8 and 5.1 v,I have not flown it yet.
I installed the old servo that I took off,It got hot but still works,
is fine,tough servo

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06-18-2010 12:29 AM  7 years agoPost 13
raptor4ever

rrNovice

RayoVac IS A THEIF!!!!

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Isn't the 620 rated at 6.0 volts

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06-18-2010 05:15 PM  7 years agoPost 14
helicrackhigh

rrApprentice

texas

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fixed

I test flew it yesterday and the 650 did not get hot,just warm.
Yes the 620 and650 is rated at 6v,but I found that on the rudder they work so hard that they build up too much heat and burn out at anything more than 5.1.
also the step down regulator can be made from a servo extension and ;
the 2 in 1 provides 5.8V which is a little bit to high for most rudder servos. Need to knock off 0.7V.
You can do this by taking a short servo extension wire.
Cut the red wire.
Solder a Diode 1N4001 in between the 2 ends (kathode to the servo side)-kathode is end with strip around end.
and your done.... Use this between your gyro and rudder servo.

you can find this diode at radio shack.

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06-23-2010 12:01 AM  7 years agoPost 15
helicrackhigh

rrApprentice

texas

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A 1 OK

I checked the 650 on servo tester,and it is fine,as well as working fine I am moving up to a spartan and selling my gp 750 and ds650 servo,I am sure the 650 is in tip top shape or I would not sell it.going with futaba servo.

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06-24-2010 03:39 AM  7 years agoPost 16
raptor4ever

rrNovice

RayoVac IS A THEIF!!!!

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Im going to run a 620 on my throttle do you think i should use a step down.

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06-25-2010 03:36 AM  7 years agoPost 17
helicrackhigh

rrApprentice

texas

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not on a throttle

if voltage is not above 6 v,it will be ok,throttle ,cyclic,up to 6 v,really only need step down regulator if it is on tail.

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06-25-2010 09:12 PM  7 years agoPost 18
raptor4ever

rrNovice

RayoVac IS A THEIF!!!!

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Ok thanks!

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HelicopterRadio - Servo - Gyro - Gov - Batt › align 620 servo hot!
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