marshallcowboy

My Feedback: (14)

Ive got the Extra300 lx, and while I was going over the instructions, it says mininum of 180oz of torque. I plan on using 5645 digitals in the plane.I plan on setting it all up in a 6 volt system, which will produce 168 oz of torgue, 12 oz shy of the recommended minimum amount. My question is should a gang 2 together for the rudder, or will the one be enough?
MC

charrua

My Feedback: (47)

If I were you I would get one 8611 and you will save a bit of weight and a lot of trouble trying to set up 2 servos for rudder, unless you already have an extra 5645 and the digital programmer for them.
The price will be about the same of going with 2 5646 or 1 8611 this will give you 260oz at 6v.

But I don't know if I'm right here 'cause I personally never used 2 servos for 1 control surface.

mstroh3961

My Feedback: (4)

I second the 8611 on the rudder! or if you want to use a hitec servo try the new titanium geared servos, the 5955TG has 333oz of torque.

Easy does it

My Feedback: (2)

If you are not planning on 3-D flight one should be ok at a push, everyone I know is JR 8611 or the hitec equivalent. Balancing will also be a consideration with ganged servos depending on what engine, batteries etc, that you are using.I personally have not seen ganged servos on a 28% plane. One $100.00 servo will save you around $2,000.00

scottfl78

I use 1 5645 pull-pull on my Edge.. It is ok but if you are going to really jerk the plane around a bigger servo wouldnt be a bad idea..

FlyinTiger

My Feedback: (45)

I have a saying that has held true for every project of mine, "I can't afford to buy cheap." You'll end up wanting the power that the DS8611 or the 5955TG will offer after a few flights, so save yourself the money of buying the cheaper servo and get the one you really want from the beginning. If it means saving up for a few more weeks, do it. You'll save money in the long run.

Tired Old Man

My Feedback: (1)

I agree with the others. Get a strong, fast, high quality servo and run just one. Running two increases the problems factor and weight. If you are not used to ganging servos, you can create a lot of problems very, very quickly. Especially so with a Hitec servo. They will not accept mis-matching very well.

You can either tail mount one rudder servo or install one in a pull/pull installation depending on balance issues. If you are using a Brison 3.2 engine, tail mounting works just fine.

marshallcowboy

My Feedback: (14)

Im using a 3w 60 on this plane.
MC

Tired Old Man

My Feedback: (1)

Put the servo in the back.

rctom

It depends on your flying style. If you want to do round knife edge loops one 5645 won't be enough. IF you are flying IMAC basic, one 5645 will be plenty.

And never use just one servo in the tail. When it's pulling, it's fine. But when it's pushing, the pushrod is trying tp push the hinges out of the fin. Sooner or later it will succeeed. Always use push-pull or pull-pull.

TF

scottfl78

Interesting Tom.. I never thought of fighting the hinge like that.. I do try to use pull-pull whenever possible..

m.gramling

My Feedback: (8)

how does the rudder servo mount in the tail. Its it underneath the elevator servo. So it just hooked up with 1 push rod. Or is it mounted underneath the plane using pull-pull or push-pull.

scottfl78

there are 2 cutouts in the tail for rudder servo(s) that you can cut out and use if needed.. Tom Recomends that if you need tail weight and are going to use a rear rudder servo, to use 2 so that you have a push-pull/pull-pushsetup and dont stress out the hinge with just one.. If you dont need tail wieght then use a one or two servo(ganged) pull-pull in the fuselage.. Wildhare manuals are avail for download at www.wildharerc.com

Tired Old Man

My Feedback: (1)

Depending on your balance situation, the 28% Wild Hares work just fine with one strong and precise rudder servo mounted on the side of the fuselage, under the elevator servos and using only one push rod. I've been flying the dickens out of my Extra since last April with no adverse effects to date. I stopped counting after 115 flights.

And yes, she will do knife edge loops with a JR 8611 servo and a Brison 3.2.

Pat

sheetsg

My Feedback: (1)

I'm looking at the Extra 260!! (drool running down from corner of mouth). What would you folks recommend for the rudder servo?

I've used the rule of 1oz-in per 1 sq. inch of control surface. Using the photos, I estimate ~ 170 sq. inches for each aileron. I'm thinking of two Futaba 9451's (130 oz-in at 0.1sec metal gears and ~$70 from Tower). For the elevator, I'm not sure how much is needed. I'm going to start IMAC, but I'm learning 3D too.

Greg.

rctom

Use the new Hitec 5955TG. It's 333 oz/in at 6v. One should be enough to do anything on the 260, but there's a spot to install another one if needed.

We have them in stock for $115, and Air Wild arms to go with it for $15 including ball/socket connectors. This setup is less $$$ than your two Futaba servos and infinitely simpler.

TF

sheetsg

My Feedback: (1)

Tom,

The two servos was for the aileron, which I thought I read you required due to warpage of the aileron with a single servo.

What would you recommend for the elevator servo? Would a 5945 suffice?

Greg.

rctom

A 5945 will do nicely.