ROGER RUSSELL

My Feedback: (12)

Has anybody tried using a single 8611's on each aileron on the inside servo bay?

Success?

Problems?

Ronbo

My Feedback: (12)

yes, i have on a single by setup on the older version. JohnVH has done it on his cap. do a search and find the thread covering it.

Mike3579

My Feedback: (56)

I looked at my extra 330 wondering if I could use just one 8611 on the inner servo bay but I felt the aileron would flex to much. You would have to move the servo to the center of the aileron which means you would have to make a new servo bay in the wing to eliminate the aileron from flexing. Maybe a good winter project

ben beyer

My Feedback: (23)

I wouldn't do it as you need a second servo to stabilize the outer edge of the aileron. I wouldn't want to spend $850 on a nice ARF to loose it to a servo that just runs you an extra $50-80. Plus it'll fly better with 2 servos.

flyme2dmoon

My Feedback: (3)

I've been using one on the old Extra and I have about 85 flights on it.

Ronbo

My Feedback: (12)

yes, you must put it near center, or on the old extra, about the 5th bay in from root.

works fine. even seen single ailerons on a 35% extra. JohnVh was doing wild 3d with his cap.

rcavi8ter

My Feedback: (19)

Rog I think you are fine. I am running single 8611s in the inboard mounts on my H9 Ultimate which has ailerons just as large and construction is the same. I also know of a another person running single 8611's on the inboard only of his H9 Edge. From what I understand the load is much higher on the inboard section of the aileron so moving it out is not needed. I say you go for it and bring the servos with you and we can do it before heading over to indy this weekend.

Chris

rmh

load is more critical on outer bay -
but either will work on that model -
also - if'n you linked both ailerons together properly - a single 811 will do the job (one servo runs both)
Why?
look at a full scale EXTRA- ask the pilots how much aileron stick force is needed - I bet they tell you two finger flying does the job.
The linked ailerons stabilize each other and spade balance reduces/stabilizes the various loads -from center to full deflection.
You won't be tested on this but it may be handy info---

Geistware

My Feedback: (16)

Roger, is this your first big IMAC plane?
Will you be going to Indy next weekend.
I was going to try and make it but will be in Ocala

Mike3579

My Feedback: (56)

Well I've decided to go ahead and change the two servo setup in the wings and use the one JR 8611 servo in the inner servo bay. Talking with the guys in my club I think it will work, my only worry is the flex in the aileron. What do you guys think about putting a single 8611 for rudder? I'm running a 6V system and at 6V the 8611 puts out 260 oz of torque.

DENNIS C

My Feedback: (99)

Mike i was going to do the same on mine but decided against it. not worth losing a plane over it. plus it all depends if your really going to ring it out alot.

ben beyer

My Feedback: (23)

It's not so much torque as much as it's stabilization. Look for a cheaper servo that has the same speed (i'm sure JR or hitec makes something to match) and use a matchbox. Remember, is all the money you're investing in this airplane really worth $100 in extra servos? Granted I'm into putting something together to fly, but if all that's going to happen is a crash then there's no point. Just my 2 cents...

rmh

- We have setup 40% models -using the highest torque servo in outer bay (highest power need) and a cheapie on the inner - works like a charm - and no need for matchboxing -
speed means-- nothing - these things are under load.

Smokey

My Feedback: (16)

Where is the most load located. inside or outside edge of the wing. There seems to be difference of opinion. Any scientific formulas?

Smokey

JohnVH

My Feedback: (38)

Disagree, my cap flew awesome on the single 8611's, a buddy put single 8611's in a CompARF 2.6extra and liked the feel better.



Also, you can run a single 8611 on the rudder, Erick did this in his review of the plane here on RCU.

Flyfalcons

I agree, I thought my Comp-ARF actually snapped better with the single 8611 servos in the ailerons. I pulled roughly a total of a half pound of rotational mass out of the wings, and thought the change was worth it.

Remember, we aren't doing this to save any money (I already had the 8411s for my plane), we are doing this because we thought that going with a lighter, simpler setup would make for a better flying plane. So far I'm happy with mine. Though now I'm more than 1700 miles away from my comp-arf [&o].

3DFanatic

My Feedback: (5)

For the price of one 8611 you could get 2 Futaba 3050s... Just a thought.

Hawk21

My Feedback: (7)

This a little out of the thread but I read the RCM magazine November edition
and this guy was telling that a H9 extra crash because of a wing panel went
out of plane and the problem was that the side of the fuselage were the plastic
bolt is break letting the wing out with the bolt
he was telling to reinforce that place with a doubler to prevent this from happening
just let you guys know about this I am going to reinforce mine for sure do not want something like this to happen

Ronbo

My Feedback: (12)

and those 2 futaba 3050's are only 180oz of torque together, plus extra wieght, matchbox (they are digital after all) setup etc vs the 220oz at 4.8 for the 8611. ( i only saw the 3050 listed as 6.volt). when using 6 volts the 8611 is 260 to 280oz or so...

John's thread of his cap with 8611's convinced me of using them for my H9 extra. just a matter of good glue, good links, and sealing the gap.

just another thought....

Mike3579

My Feedback: (56)

Which servo bay would be the best one to put the single 8611 inner or outer ? The servo's will be here wed

DENNIS C

My Feedback: (99)

Neither use the 2 bays. the ailerons would have to much flex in it. this is a built up aileron. i was going to do this on mine but decided against it. i think if M.M. would of thought that this design would work properly with the one servo he would have designed it that way.

JohnVH

My Feedback: (38)

I dont think so, nobody sells a plane for one servo, they use two just to cover their butt IMO.

DENNIS C

My Feedback: (99)

You dont think so...............I do................ the 35% radiocraft was designed for one servo per aileron

WycheG

My Feedback: (4)

So, let me get this straight ...

If you had some of those new 333 oz/in servos that HiTec is supposedly working on, you would put two of them on each aileron half????????????????? That seems a bit much. Now getting the location for the servo right if you go with just one servo may be an issue worthy of debate, but just because the plane was designed to use two servos on any given surface does not, in and of itself, mean that two of ANY type servo on the market are REQUIRED to get the designed performance.

I agree with JohnVH on this one but, in the end, it's another case of each modeller doing what makes them feel comfortable so it ain't really something I will get up in arms about either way. Me ... the fewer y's, matchboxes, servo lead extensions, servo connectors, having to setup two servos so that they don't fight each other at any point in their travel, etc. I can get away with, the better since I'm doing this for fun. I'm wiling to pay a little more for my servos if it makes the overall modelling experience better.

Just my 2 cents ...

Greg

JohnVH

My Feedback: (38)

Oh, didnt know the radio craft was sold intended for a single servo. More proof it works.