[Lord Kimbo]

I am building a Byron Originals Pitts Special (1/3 scale). It is identical to the Great Planes ARF. The difference is it isn't an ARF and is by a company that has gone belly-up (no ordering replacement parts).

[Gary Maker]

Thanks for the info on your plane Adam.

I do still believe that the standard digitals would be enough servo on the split elevators for this plane. You would be using a 76.4 in oz servo on each half of the elevator. The only exception I may have would be maybe with the rudder servo needing to be a higher torque. Just keep in mind that the Byron kit has been around for a very long while and was origionally designed to be used with servos that were available at the time, servos that we now call standard servos of around 43 in oz of torque.

But your the one who has to be comfortable with what equipment you will use on this plane

Please know that this was not meant to be any kind of a critisizm. My offer was only meant to help you out!

All the best with your project!

[Lord Kimbo]

All feedback and recommendations are welcome. That is why I am here!

I am putting a 1/4 scale 160 oz torque on the rudder. (I bought it a few years back).

I am buying new servos (probably @ Toledo) for the ailerons and elevator. For those I am looking at standard size, very high torque. I am looking at very high versus high because of my comfort level. I have a Quadro 50 for the kit and when I come straight down from high altitude @ full throttle and I then pull up (level out) at low altitude for as fast as possible low flyby of the field, I want no worries about the strength of the elevator. A few more bucks give me that comfort level. I just bought new high strength control horns (Du-Bro teflon). The ones that came with the kit were cheap, little 2-56 nylons. The kit also came with 2-56 rods that I scrapped for 4-40.

Like Tim the Tool Man ... more power!

[ronm]

I flew my 1/3 Pitts with 2 standard 148 servos on the elevators, with a servo reverser Y cord, and it worked fine.
I switched to JR4721, and the control was a bit more precise, but nothing major. I let an Unlimited IMAC pilot fly it, and he could not believe they were standard servos until after he landed and looked at them himself.

Standard high-torque servos would be fine on this plane, digitals a bit better. If you decide on non-digitals, just use a reversing Y cord. The digitals Gary has would be an excellent choice, and he could program them for you. You certainly don't need more than those on the elevator.
For your ailerons, if you are using 4 servos, standard torque is fine.
If 2 servos, higher torque is necessary, but extra high torque is not. Choose servos for your ailerons that are more precise and higher speed over extra-high torque.

No offence to any previous post intended, just my opinion based on first-hand experience.

Ronm

[Lord Kimbo]

Thanks for the input.

I am going with a digital extra high torque on the wings for the precision and my own comfort.

I will give more thought to the offer above in regards to the elevator servos.

Thanks.

[ronm]

I have a Quadro 50 for the kit and when I come straight down from high altitude @ full throttle and I then pull up (level out) at low altitude for as fast as possible low flyby of the field, I want no worries about the strength of the elevator.

Adam, I don't know how much experience you have with giant scale, but if you go straight down vertical at full, or even high throttle, your beautiful Pitts is going to disolve, and the largest servos in the world will not save you.

The good news: a company called "Iron Bay Models" has taken over production of most of the Byron kits, and you may be able to get a replacement!

Ronm

[Lord Kimbo]

I am inexperienced with Giant Scale.

Good info ... i'll take it a little easier than with my Extra.

Thx

[simcoeflyer]

i have a byron christen eagle (byron is now ironbay model company)
i run 2 elevator servos with no reverserbut changed the wires in the 605 hitec servo and works great and mor importantly at the same speed and direction so u might wanna look into that option Mine has a MDS 218 in the front talk about power

[LEE]

A while ago I bought a y harness from Hobby Hobby in Streetsville (great store ) that reversed the servos and has a little potentiometer so you can get both servos aligned for about 20 bucks. Don't know if they still sell them, but it worked flawlessly for two years in one of my pattern ships. If you are going to spend the bucks on a gas powered plane you might want to spend your money on a decent computer radio whereby this talk of y harnessess is moot. Now I simply mix channel 2 and 7 and reverse one, dial them in and watch the magic!! Ain't technology grand

[ronm]

A while ago I bought a y harness from Hobby Hobby in Streetsville (great store ) that reversed the servos and has a little potentiometer so you can get both servos aligned for about 20 bucks.

That's the one I had mentioned earlier.
It's still working in one of my planes, even though I have a computer radio now and could get by without it.

Ronm