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T-REX 500 › Trex 500 and the Futaba 9257 on cyclic?
06-05-2009 01:44 AM  8 years agoPost 1
bah7566

rrVeteran

Colorado

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Is anyone flying the Trex 500 with Futaba 9257 servos on the cyclic? If so, how do you like the speed and torque? Is the torque sufficient or causing you any problems? Are you running them on the recommended 4.8V or have you bumped them up to 6V?

Thanks in advance for any experiences running the 9257 servos on cyclic in a Trex 500.

I am a Heli addict!!!

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06-05-2009 02:00 AM  8 years agoPost 2
duceduc

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Saitama-Ken, Japan

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I think there isn't alot of torque on the servo. I use it for my tail only.

Duc S
Do It! Do It!™
AMA:REVOMIX
RCK:24005615-01

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06-05-2009 03:23 AM  8 years agoPost 3
bah7566

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Colorado

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I think there isn't a lot of torque on the servo.
Yes that is true, it only has 27.8 oz at 4.8V. But it is a small, light heli and there are three servos working together to share the load.

I do like the speed though. I am just not sure if the low torque will be enough.

I too have used it as a tail servo with great success on small helicopters.

I am a Heli addict!!!

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06-05-2009 03:39 AM  8 years agoPost 4
DVS

rrApprentice

California

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Jason Krause had the 9257 on the cyclics for one of his T-Rex 500.

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06-05-2009 03:58 AM  8 years agoPost 5
Double Springs

rrApprentice

Cookeville, TN

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I have a friend who runs 9257s all around and hasn't had any problems at 5.1v. I have not flown it though so I can't comment on the feel, i run 9650s in mine.

Do or Do Not, There is No Try

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06-05-2009 06:19 AM  8 years agoPost 6
smartguy

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Corona, CA

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i fly with them all around and all i can say is wow!!!, i have over 50 flights and going strong.,, they are so fast i had to tone them down alittle...

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06-05-2009 07:51 AM  8 years agoPost 7
krashtagain

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ohio

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Nothing wrong with 9257's on the swash of a 500 , I ran them on mine up until I traded the 500 off . It will respond quickly

If you're not living on the edge you're just taking up space !

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06-05-2009 10:47 AM  8 years agoPost 8
bah7566

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Colorado

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Thank you for the input guys. That is what I was hoping to hear. Is anyone running them on 6V over an extended period with success?

I am a Heli addict!!!

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06-05-2009 12:16 PM  8 years agoPost 9
ppridday

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Detroit Lakes MN

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I am going to run them at the 5.5V default. Had a quick maiden flight on them but just some fig 8's. Seems to be quick...

Paul

"There's someone in my head, but it's not me..."

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06-05-2009 02:27 PM  8 years agoPost 10
Gary H

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Minnesota USA

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9257`s r made to run on 4.8V, not 5.5 or 6.0. Anything higher they will burn out, you have to put a step down in line to drop the voltage. Remember they work more than any other servo to keep that tail in control with the gyro. Price of a step down is much cheaper than a downed heli!

Gary H

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06-05-2009 09:56 PM  8 years agoPost 11
bah7566

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Colorado

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9257`s r made to run on 4.8V, not 5.5 or 6.0. Anything higher they will burn out
Has anyone ran them on 5.5V or 6V and experienced "burn out"?

I am a Heli addict!!!

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06-05-2009 10:30 PM  8 years agoPost 12
dkshema

rrMaster

Cedar Rapids, IA

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Try 5.8 volts max. The 4.8 max argument won't fly, that's the NOMINAL voltage of a 4-cell Nicad pack. Fully charged, those packs will easily hit 5.2 - 5.3 volts and stay above 4.8 for quite a long period of their discharge curve.

when Hobby Services was asked about the MAXIMUM safe operating voltage for the S9254 servo (also a Futaba servo rated for "4.8 volts" and no 6 volt rating), their reply was 5.8 volts max.

Running 5.5 V will be safe. I've got my 500 with a 9257 programmed that way, it is quite happy.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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06-06-2009 06:21 AM  8 years agoPost 13
bah7566

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Colorado

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dkshema,
The information in your post is what I have been reading and seems to be the general consensus. I was hoping to run into someone who has real life experience with this subject. Glad to read your post and thanks for the information.

I am a Heli addict!!!

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06-07-2009 02:37 PM  8 years agoPost 14
bah7566

rrVeteran

Colorado

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Thank you for the input guys. I am going to give them a try and I think I will take my chances and try them on 6V just to see. It will be a little while before I try them out because I have a 500 set up with the Align 510 servos at the moment with no issues. However I am going to build a second 500 and will give the 9257 a try in it.

I am a Heli addict!!!

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T-REX 500 › Trex 500 and the Futaba 9257 on cyclic?
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