Yup, still working on my J-3, will be done soon. Any tips on snaking the aileron extensions through the wing? Never done it before. Do you J-3 GP ARF guys use 12" extension wires or longer? Thanks again for all your tips and assistance! Bill

Aren't there strings in the wing to tie on to the servo extensions? If not, take a wheel collar or something similar and tie a string on it. Hold the wing section with the tip pointing up. Drop the wheel collar through the ribs from the servo cutout. When you get the collar out of the exit hole in the wing center, tie the other end of the string to the servo extension and feed it through the ribs while keeping tension of the string. Make sure you secure the connection between the servo wire and the extensiopn. You can use shrink wrap, tape, or dental floss. Parsons make a very nice plastic item for doing this also. Do a search for "Parsons" on the Tower hobbies site.

Bob

Thanks! Wondering if the 12" ext. is long enough? Any harm with using a 24" and having some excess hanging around within the wing? Bill

Another method is to use a vacuum. Thread a piece of string into the center hole (where the connector comes out and into the fuse) and then put a vacuum on the hole for the servo and hopefully it will pull the string through and out the hole. It's worked for me.

Of course, it's easier to not pull out the string in the first place, but sounds like someone did that for you already.

Good luck!

Bill,

On page 3 of your instruction manual (if you don't have it you can download it from the Tower website) it says you'll have to buy "two 6" servo extensions for the aileron servos". You will also need a "Y" connector to tie them together unless you plan on running each aileron from a separate radio channel (computer radio only). Go with the recommended length. Loose wires have a tendency to want to get caught on servo arms inside the fuselage. Keep it neat and you won't have any problems.

Bob

Thanks! Actually my Y harness has only 5" arms (2) and even a 12" extension for both servos will not allow me to snake and connect the servos without cutting the covering which I don't want to do! So...I think my only alternative would be either to get a longer armed Y and 12" extensions. I'll have to do some measuring tonight and make the determination. I do have the instruction manual. Bill

You must have really short leads on your servos.

Well...not really as I will be using Futaba servos and my other F servos have 10" leads. The dilemma is my Y harness has SHORT leads! (5") I guess a longer Y, two 12s should do it. I guess I'm making an issue of this, but I am anal. Thank you. Bill

If what you have isn't long enough then by all means use longer extensions. My original point was that you don't want a lot of loose wires inside the fuse that can get caught on servo arms.

Take care
Bob

Getting the string through is easy, I just replaced the supplied piece with one considerably longer and tied a #6 x 1" bolt on the end, drops right through! Bill

Got that right! I once had a servo arm chew right through the servo insulation on a DuraPlane about 10 yrs ago! I'll engineer something to hold the wires and allow only the minimum that's necessary to connect to the short extension into the Rx. This 12-16 hr. airplane is now in its 5th month, enough is enough! Bill