Cyclic servos

[GootyS]

Hi there Gents..i know this has been asked tons before..but what JR servos do you guys recommend for cyclic?

[TheBum]

The JR 8717 are hands-down the best servos for this heli. They are a bit expensive, though ($110 apiece). I opted for the next step down: $80 Futaba S9452 servos.

Also, please pardon the soap box, but if you knew it had been asked before, why didn't you do a search?

[HeliSmith]

If you run the JR8717 servos it is suggested to upgrade your regulator. More info by searching for "cyclic servos" using the thread search tool for this this forum.

[Tim Smith]

The JR 8717 are hands-down the best servos for this heli. They are a bit expensive, though ($110 apiece). I opted for the next step down: $80 Futaba S9452 servos.

Also, please pardon the soap box, but if you knew it had been asked before, why didn't you do a search?
:hug::smokin: We Concur Sir :thumbup: These are the Servos the Helicopter world wants and needs and if you go there you may as well use the 7703D Gyro and 8900G tail servo combo . UN-belivable proformance and easey to set up .Its very very acurate and requires that you can set up and dial in a gyro in the first place.( Its not finicky or freaky ,Its just very precise on its set up and neutral position.and just like any other gyro needs to be set up right ,hence revesing switch travel limit setting s gain every things Heading hold is like a unmovable object and Rate moade is Smooth easy to streer the nose at any speed and any rate while doing any speed yet fast fast fast in rate:D the first time I flew it I had to land and Laugh it off so I could fly right with out freakin out:smokin:

[LJS]

Hi Tim,

While I respect your opinion, I'm concerned that some people out there might get the idea that the 770 3D is a premium gyro. I don't believe that it is. Mine drifted requiring trim to get it to hold in heading hold mode. Also the stops are brutal and cannot be adjusted. I've had to learn to be gentle on the stick when doing 540 stall turns and fast pirouettes for fear of breaking the belt or stripping gears. Also, there are not independent left and right travel adjustments.

True, it does hold well in fast backwards flight. And the slow pirouette rate is nice and constant. So it is better than a 401. But it's still not on a par with the 611 or the Spartan DS 760. Both of those are fully configurable, premium gyros (with price tags to match).

But if you're putting 8717 servos in your heli, then I think you should consider a premium gyro as well.

That's my opinion. I respect yours.

Keep 'em flying.:YeaBaby:
LJS

[Tim Smith]

Hey LJS how goes it?
I have yet to try the 611 I would like to just because it is so configurable in that respect and the Spartan Would also be great from what you and every one else have been saying .:hug:
I was only speaking from a experiential point of view .Maybe I will try the spartan and a 611 or the Curtis G gyro and see how they differ. Cool breezy days are easy on any gyro but try flying in a 35 knot wind and see what you think of the 7703D that is where you really appriceate the way the 770 functions.:thumbup:
Soon I will get a 700 Trex and I will put the 611 and the new Futaba Brushless Servo
and then you'll see me smiling :lol: Well I just went back to my bench in search of awnswers.And yes the 7703D will allow you to set individual trav limits from the gyro limiting attenuator adjustment .Use the little plastic screw drive tho!.( To Do so you must hold the Control Gimbal in the Direction of trav you wish to adjust for the tail rotor defflection, then you trim it to the proper setting so the control rod does not bind ( WHile Holding the gimbal to maximum)do that to the right then hold the stick to the left and set that limit point and there you have it.The things does exactly what the radio tells it to do and what the setting are set at on the gyro .Don't for get that you can also tame this little red Box with your Dual rate and Expo to soften up the hard stops and slow down the tail transitions to a more managable speed.......

[GootyS]

Hi there TheBum, you are quite right, i snuck on at work and did a search and came up with so many posts. WIth my time span i had i thought it be a bit quicker asking. I do appreciate everyones reply and i will look into both servos. Im running a Solid G with a 8900G.

[LJS]

Hi Tim,

Hey, thanks! I thought it just had a single limit adjustment like the 401. I was out flying it at lunch today. It does hold great.

I'll set the travel limits tonight. Thanks for the tip!

Yeah, I've already got 20% expo in it but the stops are still brutal. I tried more, but then the gyro was too soft around center. It's a good gyro, but I'm spoiled by the 611s I fly in my 600s.

If you're going to get a gyro, though, I'd get the Spartan DS760. Fully configurable and very, very small and light. It would pair up nicely with the 8900g.

Keep 'em flying.:YeaBaby:

LJS

[invertmast]

Hi there TheBum, you are quite right, i snuck on at work and did a search and came up with so many posts. WIth my time span i had i thought it be a bit quicker asking. I do appreciate everyones reply and i will look into both servos. Im running a Solid G with a 8900G.

Some people get aggrivated seeing the same questions asked over and over. this is #2 of the same question on the first page for today alone...

anyways.. 8717's kick ass.. but $$$ not sure if anyone is running any other JR servo's under those or not.

[snjbird]

Just got a Super Pro and I used the 8717 and 7703D 8900 combo! Man this thing kicks A...
I am just on the second Gallon but I have never flow a heli with as much cyclic power as this! It is going to take some getting used to but I think they are the way to go, the set up was easy, this is just my third build; all my other helis have 401 gyros and the 770 seem to be better so far. I am still waiting on the Spektrum volt reg. so I can run a strait lipo on the cyclic servos, I can only imagine how much power they will have with another 2 volts pumping to them!!:thumbup:

[HeliSmith]

I considered running a straight lipo to but then I realized although I do demand a lot from my cyclic I am certainly not shaving the the servo horns to get a hair away on my 450 helis. I hope I am not wrong but I think 6v will be fine for me.

[layinitdown]

What do you mean,, shaving servo arms or whatever you said,,

[LJS]

Hi Tim,

Back on the 770 3D, I went back to my instrucations and there is nothing about setting a left and right travel adjustment. It states to adjust travel with the pot. That makes sense because I can recall adjusting it and the pot appeared to affect both travels

Maybe JR changed it. I got one of the first ones out.

Keep 'em flying.:YeaBaby:
LJS

[HeliSmith]

What do you mean,, shaving servo arms or whatever you said,,

I mean grinding the lower servo arm on a 450 down to the bare minimum so you can push as much swash mix as possible. (right side of heli in danger of touching main gear) I left mine with a lot of meat so it doesn't snap instead.

Not recommended and seriously not necessary.

[snjbird]

Another reason to get the Sepktrum volt regulator is to lower the volts going to the 7703D. it has a slight twitch at rest and I am hoping the voltage regulator will eliminate that.:)