A gift (junk he didnt want) from a friend, he built it as a static model but used one servo to actually line everything up..it is 2.4 pounds 48" wingspan, 38" nose to tail...empty no servos , I have either a .25 or .40 os la the .25 should fly it, but the .40 might be safer, I have never seen the aileron set up, its on a cable with a center servo in the wing wire landing gear with 1" wheels, it has a tank in it, maybe 4oz, hard to tell, it will have to come out I know that....I think he had an os .32 in it as the static model but no throttle rod, have no idea who the manf is, he did a nice camo covering job on it.....I'm guessing its 30 years old, cant take a pic till I figure out whats wrong with my cam/comp setup......which motor would you use?......Rog

I am so sorry I can not give advice.  However I love flying something that is free. It always takes some reinforcement in old glue areas . <div>But you can smile if it crashes. ( seems I never crash free planes)</div>

The airplane is likely an older twentyfive sized airplane and that at a time when twentyfives were not as strong. Based on virtually no info beyond just size and nothing on stuctural density then a forty may not be a safer bet at all. Displacement creep exspecially in these forums often has a devistating effect on nice flying airplanes.

The flexcable single servo aileron setup was common in the past especially for smaller airplanes. It can work just fine. A contemperary model that still uses that setup that comes to mind and still sold by Hobby people is the Modeltech AT-6 twentyfive size Arf designed by Fred Reese and also still kitted by Balsa USA I think it is.

John

Thats a good point on the engine...this isnt a flex cable that I have seen before this is a straight cable to, I assume a pair of bellcranks...Rog

The flex cable arraignment goes through a ninty degree bend on each wing. So if thats not what you have it is the standard pushrod and bellcranks. Even more common than than strip ailerons.

In the past it was unheard of to use more than one servo on ailerons and cost was a major reason as well as weight. Servos in the past also had square output bushings instead of splined and this would have made outboard ailerons servos difficult. Y chord and extensions were not a part of most modelers lexicon either.

Thanks Heavens the so called good old days are over I hope and pray to never build a bellcrank wing agine Hmm still got a ton of new stock ninety degree bellcranks suppose I should have a yard sale? Naw.

John

My TopFlite P-47 uses just one servo in the center, and 2 belcranks, it works just fine, if you download the manual for it, it shows how it is installed, and you may get some ideas for that. Also, somewhere on the packaging for Golden Rods, the splined nylon rod that runs inside of a tube, they show an example of how a curved or bent Golden Rod is used for control surfaces. I used it to actuate my landing gear on the same model.