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Thunder Tiger Victoria
Sail Attachment Points Modification

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Reinforcements

Sail Attachment Points Modification

If the supplied PVC sail reinforcements have not been installed yet, do not use them; the pressure-sensitive adhesive will fail in a short time. An improved  method that has weathered many hours of heavy winds employs iron-on fabric reinforcements with crimped brass eyelets. If the supplied PVC has already been installed, carefully peel it off (careful around the colored areas).

Victoria Sail Attachment Items - Airplanes and RocketsNew reinforcements are made by bonding a double-sided, heat sensitive strip first to a piece of ribbon, and then to the sail (both sides of the sail). 12 sets of triangular reinforcements must be fabricated as follows:
  • Cut one 12" long piece of 7/8" wide Heat-n-Bond iron-on adhesive (by Therm O Web).
  • Cut one 12" long by 7/8" wide acetate ribbon (by Offray).
  • Following the manufacturer's instructions, iron the tape on to one side of the ribbon (try to keep the backing paper intact on the second side).
  • Measure and cut the tape/ribbon into eleven 7/8" squares, and one 7/8" by 1-1/4" rectangle. The longer piece is used at the top of the jib sail.
  • Cut the twelve pieces diagonally to create 24 triangles.
You should now have 24 triangles with adhesive bonded to one side. Following the manufacturer's instructions, remove the paper backing from the adhesive and iron a triangle on one side of each sail where the PVC reinforcements used to be located. Align the long edge of the triangle with the edge of the sail (see drawing below). Orient the triangles at the sail corners for maximum coverage (1-1/4" long piece used at the top of the jib). Be careful not to dwell too long on the sail and reinforcement with the iron to avoid possibly melting the sail, but do dwell long enough to get a complete seal. A little experimentation might be in order.

Victoria Sail Reinforcement Drawing - Airplanes and RocketsNow, turn the sails over and iron triangles onto the other side directly opposite of the other triangles. Be sure to press hard to assure that complete adhesion. Trim the overhang from the sail corners as necessary.

Measure in 1/4" from the sail edges and at the center of the length of the triangles, and make a small "x" with a pencil. This is where the 3/16" eyelets will go.

Victoria Boom Spring - Airplanes and RocketsAlthough which side of the sail the eyelet is installed from does not matter, I chose to have the finished (manufactured) flange of the eyelets on the colored side of the sails. Place an eyelet on the eyelet tool with the small diameter facing up. The tool and eyelet will automatically punch the correct size hole in the sail. Align the eyelet tool center with the pencil marks made earlier and carefully squeeze the tool until the eyelet is fully swaged in place. Be careful not to squeeze so hard that the newly formed flange on the back side punches through the sail to the front side.

Victoria Sail Reinforcement - Airplanes and RocketsRather than running the sail rings through the eyelets of the  mainsail to attach to the mast, cut short pieces of rigging string and tie loops through the eyelets. The sail rings are then passed through the rigging string loops. This configuration allows much more freedom of movement around the mast.

A pair of small needle-nosed pliers can be used to reform the boom springs as necessary to capture the eyelets. Attachment of the jib is similar; however, if the forestay modification will be performed, attachment of the jib will be delayed until the new forestay configuration is complete.







About Airplanes & Rockets

Kirt Blattenberger, Webmaster - Airplanes and Rockets
Kirt Blattenberger
Carpe Diem!
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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. There is a lot of good information and there are lot of pictures throughout the website that you will probably find useful, and might even bring back some old memories from your own days of yore. The website began life around 1996 as an EarthLink screen name of ModelAirplanes, and quickly grew to where more server space ...

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