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3D Heli Depot . JR-Spektrum . Gyro Hobbies

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Synergy R/C Synergy N9 > servo Q
 
 
Helinutnz
Elite Veteran
Location: below 42 South

Hey guys. This has been asked a million times before but I am getting a synergy soon and have all my gear namely ...os 91 szh ps, tj max, R1000ds, radix 710, Gy611, fromeco 4800 and arizona. Just looking at servo's.

I am only looking at 9451's or airtronics 94758's. (6 Volt) Any comments good or bad from those that run either or both of these servo's? I have searched the specs. Mostly interested in how they fit on the synergy and wether anyone knows of the quality. Centering,development of slop and longetivity. I have always run futaba servo's and been very happy with them. I'm happy to run metal gears (after all we run them on the tails)
I see the speed is quicker on the airtronics and the 9451's have a wee bit more torque. looks like either will be fine on a ccpm machine. 9350 more expensive than the 9451 but I imagine the torque produced by either the 9451 or airtronics will be anywhere near enough for a ccpm machine so not really looking at the 9350.
If there is not a great deal of benefit to be gained by using the 94758's i'll get the 9451's as they are $20 cheaper.

I've got a spare 9254 at home so will use that on throttle.

Cheers
08-27-2006 Over year old.
 
 
EKIM
Veteran
Location: Long Island New York

I bought 9451s for my Synergy but I ended up trading them in and getting the 9255s. A very experienced builder that got one of the first batch to go out put the 9451s in his because he had them and he wasn't very happy with them at all and recommended to me to go with the 9255s instead. He really didn't give me much of a reason other than he didn't like them and said the 9255s were the way to go. They'll certainly do the job but I figured I'd better go for the better ones. I also heard that the 9451s were made for 1/8 scale cars and don't center with the best of them. I am not familiar with the other one you mentioned so I can't comment.

*******Mike********
08-27-2006 Over year old.
 
 
AnnihilaT
Key Veteran
Location: The Netherlands Force: The Dark Side

Why would you use 9255's over the 9252's?





A day without sunshine is like, well, night.
08-27-2006 Over year old.
HOMEPAGE  
 
 
DOKEY
rrProfessor
Location: Northampton UK

9255's are metal geared and also have more torque. From looking at the Synergy and a wild guess, the geometry makes me feel that the Synergy puts a little more load on the servos compared to some other machines, could be wrong though.

Check the gallery!
08-27-2006 Over year old.
HOMEPAGE  
 
 
AnnihilaT
Key Veteran
Location: The Netherlands Force: The Dark Side

I would think that with many people using 9252's in raptor 90's for a long time with no issues on a single function, putting them in a e-ccpm setup which shares the forces over three servos would be absolutely no problem at all. Plus they are faster than the 9255's. And cheaper!





A day without sunshine is like, well, night.
08-27-2006 Over year old.
HOMEPAGE  
 
 
inkspot1967
rrProfessor
Location: cranston ri.

I'm running 9351's in mine and are by far the best servos I have ever used...at 6volts the are .13 speed and 198oz of torque need I say anymore....9451 are nice But don't center good on ccpm I ran those on my r90se and r50se and loved them but I would go with 9351's on 6volts or 9255's on 4.8 volts not 6volts on the 9255's

Trex700e Ray Nemovi's kit & Tyler Bonta Head
Rave Flybarless
WENZEL CANOPY
Team TomTom
08-27-2006 Over year old.
 
 
AndersNaverlind
Heliman
Location: Umeå - Sweden

I dont think you need to be afraid to run 9255 on 6v if it's a regulated voltage.
08-27-2006 Over year old.
HOMEPAGE  
 
 
inkspot1967
rrProfessor
Location: cranston ri.

I'm just going by what jason & todd said at ircha during the synergy class ...they said you can do it but don't recommend it

Trex700e Ray Nemovi's kit & Tyler Bonta Head
Rave Flybarless
WENZEL CANOPY
Team TomTom
08-27-2006 Over year old.
 
 
Secret Squirrel
Key Veteran
Location: New Zealander living in Melbourne, Australia

I would go with 9255's, I have them in mine and they're great. More than quick enough response. Plus we have found with F3C use that the 9255's tend to 'hold center' better after some use. With the geometry of the Synergy, that's important...

Si

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Simon Lockington
08-28-2006 Over year old.
HOMEPAGE  
 
 
Helinutnz
Elite Veteran
Location: below 42 South

Cheers. I'll have a look at the 9255's. Centering is pretty important to me. I can run pretty much any voltage on them with the arizona setup....Si what voltage you running them on?

Cheers
08-28-2006 Over year old.
 
 
Secret Squirrel
Key Veteran
Location: New Zealander living in Melbourne, Australia

Iv'e been running them on 6V, but I felt little to no difference with them at 5.3 so I think I might put it back to that. I know a lot of dudes haven't had a problem at 6V (I haven't), but Futaba doesn't specifically mention that you can do it (unlike the 9252).

Si

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Simon Lockington
08-28-2006 Over year old.
HOMEPAGE  
 
 
Helinutnz
Elite Veteran
Location: below 42 South

cool ta.
08-28-2006 Over year old.
 
 
Helinutnz
Elite Veteran
Location: below 42 South

well I reckon these 9255's look like the ones to get. The specs on the airtronics look good but they are a bit dubious after a bit of research....(ie..their transit time is taken over 20 degrees and 60 degrees is calculated on that figure)Heard of a few that stopped working here on runryder but I take that with a bit of a grain of salt as others have had futabas go out etc. I have never had a futaba go bad on me yet...Hitech I have. Doesn't mean it may not happen one day I spose. Also the airtronics seem to be supplied with a straight arm...a beefy sucker...but are they perfectly at 90 degrees to the case when centered??? I had that problem with the heavy hitech ones I used to have...I simply won't use subtrim....thats a setup failure in my book.
I have read that torque and centering is more important than overall speed. It seems that servo's slow somewhat under pressure as can be imagined and three higher torque servo's may even transit faster under load than super fast servo's. (I imagine I cannot actually move the stick faster than most quick servo's travel!)

So I think I'll go with what I know as being a reliable brand and go with the 9255's.
I looked at the 9350's which transit faster with more torque but have one on my freya hpm collective. mighty servo but now with a small amount of backlash....maybe this is meant for a car steering servo?

Si ...does the servo ends have tabs on still? I thought I saw somewhere futaba was changing their connectors and I could use them in my JR receivers without having to modify the ends?

By the way. I looked at a post from RC Universe about the 9255's on 6 volt and it was answered by the lead futaba programmer tech something or other....The techo said futaba wouldn't recommend anything other than regulated 6 volts. I'd say that the 4.8 v limitation futaba puts on their some of their servos is meant to cover the unregulated set up as a fresh 4.8 volt battery we all know is maybe 5.6 volts. So a futaba techo says regulated 6 volts is fine for these servos whereas unregulated will kill them.

Cheers
GE
09-01-2006 Over year old.
 
 
heli_runner
Heliman
Location: Russelville, KY

9155 ?
09-02-2006 Over year old.
 
 
Secret Squirrel
Key Veteran
Location: New Zealander living in Melbourne, Australia

Let's not get too carried away by servo 'speed'. Of all machines, the Synergy doesn't 'need' fast servos to get great performance. HOwever, it would need servos that center properly all the time (ie good digitals).

Therefore, doing a heap of research to find servos faster than 9255's is just a waste of time IMO. You just won't notice the difference. It's not going to make you 'pitch pump' harder becuase believe me, in that maneuver, the slow bit is your thumbs!

Si

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Simon Lockington
09-02-2006 Over year old.
HOMEPAGE  
 
 
Helinutnz
Elite Veteran
Location: below 42 South

Sounds good to me Si. I've ordered three 9255's
Thanks for your help.
And yes.....all of my problems are in my thumbs!!!
09-02-2006 Over year old.
 
 
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Synergy R/C Synergy N9 > servo Q
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