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Home✈️Aircraft🚁Helicoptere-AlignT-REX 450 › Best servos for a precision control of eCCPM
05-27-2007 01:26 PM  13 years ago
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uragano47812

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Friuli, Italy

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Best servos for a precision control of eCCPM
Hello this is my experience. I had got las year a Trex450X. I upgraded it, with a selfmade frames modification, to eccpm 120° with servos displaced like SE style. Using futaba s3107.

No i buy a new heli a HDX450SE from helidirect and i use the Hitec HS-56 on swash. I have the ely balanced and all the linkages are ok but i notice some difference.

Even if the all metal parts give some important differences in 3D manouvers, i notice that the ely in normal hovering isn't precise. I must always to correct it and also the trims correction are not always the same.

Some day ago i fly again with my old trex (sell to a friend) and surprise it is more precise than mine in hovering and in basic manouvers i don't correct it.

So i asked to my LHS (the owners are very good pilots) what can i do, and when i say them that i have fly with HS-56 and also with s3107, they say to me that the s3107 are more precise in centering and in movements than the hitec.

Anyone have got the same experience?

So which servos are the best for eCCPM Trex swash?
Futaba s3107
Futaba s3103 (for 6V)
Hitec HS-56 or HS-65
JR DS285

Please help me thanks (sorry for my english :rolleyes
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05-27-2007 01:32 PM  13 years ago
rogueleader

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France

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hs-65 are very smooth ... and note very expansives .• trex 450s + 430l (12t) + rcbl-35x + 4 hs-65hb + lgt-2100t + smc-16 scan + polypro 1900
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05-27-2007 01:44 PM  13 years ago
celihopter

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I used 3107 on my MX-400 for a while. They all stripped the gears on my first crash (still a beginner at the time).
Could not get any gears anywhere - Tower had them listed as not in stock for months..
Changed to HS-56 and it worked fine for me for several hundred flights - however, they developed some play very quick.
Now use HS65MG the metal is the way to go.
These servos are still as tight as on day one (60 some flights ago) with one bad case of deceleration.
For me it will be HS-65MG on my next REX also.
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05-27-2007 01:52 PM  13 years ago
uragano47812

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Friuli, Italy

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Many thanksfor replies!

But what about centering? Are they precise? And what about JR DS285?
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05-27-2007 02:00 PM  13 years ago
celihopter

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My HS65MG's feel precise to me.
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05-27-2007 02:21 PM  13 years ago
Gardner

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Orlando FL, United States

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My 285's do feel guicker than my 65's. More precise? Not really the 65's hold really well. Burned up a 285 and 2 gear sets in one crash. Not thrilled about that. Never broke more than a servo arm on a 65.
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05-27-2007 03:05 PM  13 years ago
rwkracing

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malta.ny

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hitec mg 65 and be done with it
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05-27-2007 03:21 PM  13 years ago
drdot

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So. California, Orange County.

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fwiw

HS65 mg all the way...Centering issues are usually caused by drag/slop in the ball links or pivoy points in the head...

John.
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05-27-2007 03:24 PM  13 years ago
uragano47812

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Friuli, Italy

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But for the precise i mean how good they can move the swashplate. I regulated my hs-56 with a level applied to swahplate but it flyes better with all servos ATV at 100% so it means that at high speed movement the servos don't move corectly the swashplate or don't reach well the center point.

So the HS-65 are really so better than HS-56 and DS285?
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05-27-2007 03:43 PM  13 years ago
drdot

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So. California, Orange County.

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fwiw..

Very likely with all your ATVs at 100 % you do not have the swash level through the travel range...This introduces a bunch of interaction problems...Try adjusting the swash level at the ends of travel with ATV and I believe you'll be surprised how well the heli will handle.

John.
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05-28-2007 09:27 AM  13 years ago
uragano47812

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Friuli, Italy

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I had already try to adjust the swashplate but even with a fine regulation in some hard manouvers or at the end of a manouver returning in hovering the heli goes away i must always correct it. I know that this is normal corrections but i can't trim it correctly.
I don't know if i say what i feel correctly (sorry for my english) but i try to setup it all the way correctly and the ely don't change.
It is like the servos on the ciclic don't move or return to center in the same way or moment.
Even if i check the level of swashplate to the up and down limit it is like that the servos during the movements aren't sincro.

Sorry again but it's difficult for me to explain it in english...

Do the DS285 servo arms fit correctly in SE frames?
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05-28-2007 12:22 PM  13 years ago
menace

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Sydney, Australia

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its pretty unanimous that HS65MG's are THE toughest, and they centre well, and have enough torque to do the job nicely

most of the PRO's are using them too
!boo!
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05-28-2007 05:16 PM  13 years ago
dpcarey

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Ontario, Canada

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Ya, the 65MG`s are definitely nice. They certainly don`t leave you wanting.
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