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Old Aug 27, 2005, 04:46 AM
Bertrand MICHELS
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Belgium
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Best micro servo for a small EDF JET

Hello,

I am building a 1000 grammes Electric JEt that need 4 servos: 2 ailerons, 2 elevator.

(Kyosho F16, 4S LiPos, Schuebeler DS30 fan.... )


---> I therefore need to find the BEST servo in the 10 grammes range.

It need to be fast (and strong), but also to have a very accurate neutrol position.

I was thinking Dymond 60, Hitec HS 56., GWS Naro HP, ....

what can you suggest if price is not an issue.

Also, I was wondering : Is a DIGITAL servo really a plus ?? I have found many time that a digital servo has less torke and speed that their analog counterpart !! Why ??
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Old Aug 27, 2005, 11:34 AM
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Grove City PA basement/park
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With 2 elev servos and independent aileron servos, the HS-55 should be adequate, and is a good servo.
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Old Aug 27, 2005, 11:37 AM
6 planes 2 jets 2 helis
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United States, MA, Charlton
Joined Sep 2002
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Hs 55 will do the trick.

This topic is huge for micro helis and I setteled with 4 Futaba S3103 for My Trex.

Similar #s to the HS 56 and same price too.
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Old Aug 27, 2005, 12:33 PM
Bertrand MICHELS
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Belgium
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Thanks for the answers.

HS55 was indeed one of my choises, but more in the HS56 or HS 65 HB (Karbonite gear flavor).

Are the S56 or HS 65 HB karbonite better than the HS55 ??

also, what do you think about this DIGITAL stuff ? Is DIGITAL really a plus ?? I have found many time that a digital servo has less torke and speed that their analog counterpart !! Why ??
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Old Aug 27, 2005, 08:49 PM
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I guess most people here, like myself, have not experimented with digital. As for the Karbonite, I would not pay the extra money, though it is a good idea. For the most part, the gear strength is dependent on the close manufacturing tolerances, which eliminate gear play. Loose gear teeth will always break. I have accidentally back wound HS-55 servos many times. I have a 54" plane hanging from the ceiling, that seems to get its individual alieron servos jarred. I am convinced these little buggers have a precision, strong gear train.
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Old Aug 27, 2005, 09:04 PM
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My EDF's with 69mm size fans and lots of watts all use HS-56's for ailerons and HS-81 or HS-85's on elevator.
My Alfa Mig-15 (brushless) has HS-55's and does just fine.
Cheers, Mike
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Old Aug 27, 2005, 09:55 PM
Watts your motivation
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Mike- Are your HS-56's the carbonite geared ones, or regular? For a few dollars more, I might try some if I hear good things. So far, they are less powerful, but possibly stronger.

Justin
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Old Aug 27, 2005, 11:29 PM
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Quote:
Originally Posted by roccobro
Mike- Are your HS-56's the carbonite geared ones, or regular? For a few dollars more, I might try some if I hear good things. So far, they are less powerful, but possibly stronger.

Justin
The carbonite ones.....very tight & smooth.....like them a lot. Like you said, just a hair less torque.

Note: my post on the Warbird/K&A F-84 thread, even the carbonite gears didn't survive an assault by a slowstick......
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Old Aug 28, 2005, 01:30 AM
Watts your motivation
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Do you have a link to the encounter you speak of? Sounds like... fun!

Justin
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Old Aug 28, 2005, 01:43 AM
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Off topic, however......

Nah.....no cool video or anything. Probably should have had the dumbell with the 'stick have to eat crunched fibreglass. Oh well, big sky theory & all that.
For sad pix just find the post on this EDF section about K&A F-84 started by netmechanic and scroll down to bottom.
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