Airplanes and Rockets' history & copyright Google search American Modeler Air Trails American Aircraft Modeler Young Men Hobbies Aviation Flying Aces Saturday Evening Post Boys' Life Hobby Distributors Amateur Astronomy Engines & Motors Balsa Densities Silkspan Covering Comics Electronics My Models Model Aircraft Articles Plans Model Boat Articles Plans Model Car Articles Plans Model Train Articles Plans 1941 Crosley 03CB Radio Model helicopter articles & plans Crosswords Model Rocket Articles Plans Restoration Projects Photos Peanuts Collection Model Aircraft Articles Plans Sitemap Homepage Hints Amateur Radio Everything from the homepage Airplanes and Rockets Hero Graphic

"Two-Line Assembly" for Control Line Leadout Wire Eyelets

 - Airplanes and Rockets

Figure 3. Two-Line Construction, "Control Line General 2017-2018"

For as long as I can remember, the instructions for assembling eyelets to control line leadout wires has been the one depicted in the image to the right. It appears to be a copy of a copy of a copy of a scanned image from a printed version of the Academy of Model Aviation (AMA) rulebook. This particular rendition comes from the "Control Line General 2017-2018" publication from the AMA (Figure 3. Two-Line Construction, on page 8). Its simple presentation is fairly easy to follow, but actually accomplishing the feat can be a little tricky when using the multistrand steel leadout wire. I am no master of the task, but have constructed many leadout eyelet ends in my six decades. A pictorial representation of the process I use is given below. This is from my electric-powered Jetco E−Shark 15 control line model. Hopefully, you will find it useful.

Two completed leadout lines with eyelets assembled - Airplanes and Rockets

Here are the two completed leadout lines with eyelets assembled, so you know where we'll be headed. Choose a starting point some distance from the wingtip which allows full motion of the bellcrank.

Pass the free end of the leadout line back through the crimp tube - Airplanes and Rockets

Step 3 - Pass the free end of the leadout line back through the crimp tube, forming a loop for the eyelet. Don't worry about the exact length at this point.

Pull the leadout line tight around the eyelet - Airplanes and Rockets

Step 5 - Pull the leadout line tight around the eyelet while adjusting the eyelet position to match the other eyelet. Don't worry about the other end for now - just get the eyelet positioned and tightened correctly.

Clip off the excess free end of the leadout line - Airplanes and Rockets

Step 7 - Finally, clip off the excess free end of the leadout line. Done!

Block the elevator at zero degrees of throw - Airplanes and Rockets

Step 1 - Here, the first eyelet is already installed. Block the elevator at zero degrees of throw and find the point on the other leadout line equal to the first eyelet.

Slide the metal crimp tube over the line - Airplanes and Rockets

Step 2 - Slide the metal crimp tube over the line.

Now pass the free end of the leadout line back again through the crimp tube - Airplanes and Rockets

Step 4 - Now pass the free end of the leadout line back again through the crimp tube. This is much easier than trying to hold the leadout line tight around the eyelet while feeding the line back through.

Use a crimping tool or rounded pliers to crimp the tube - Airplanes and Rockets

Step 6 - Hold the eyelet and crimp tube securely while pulling the free end of the leadout line back toward the eyelet until the other looped end (closest to the wing) protrudes the prescribed distance (1/8") from the other end of the crimp tube. Use a crimping tool or rounded pliers to crimp the tube tightly in two location per the AMA instructions.

 

 

Posted July 26, 2019

Try Using
SEARCH
to Find
What You Need.
>1,600 Pages Indexed

About
Airplanes & Rockets

Kirt Blattenberger, Webmaster - Airplanes and Rockets
Kirt Blattenberger
Carpe Diem!
(Seize the Day!)
Even during the busiest times of my life I have endeavored to maintain some form of model building activity. This site has been created to help me chronicle my journey through a lifelong involvement in model aviation, which all began in Mayo, MD ...
Copyright
1996 - 2018
Webmaster:
Kirt Blattenberger
BSEE - KB3UON
Family Websites:
RF Cafe | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the Airplanes and Rockets website are hereby acknowledged.

Modeling Resources
Academy of Model Aeronautics (AMA) - Airplanes and Rockets
Academy of Model
Aeronautics
Tower Hobbies logo - Airplanes and Rockets
Tower Hobbies
Horizon Hobby logo - Airplanes and Rockets
Horizon Hobby
Sig Manufacturing - Airplanes and Rockets
Sig Mfg
Brodak Manufacturing - Airplanes and Rockets
Brodak Mfg
spacer