Estes Mk-109 Stingray Build Part 7 Shock Cord

This model uses an external shock cord cowling to hold the tied cord in place. Even though the cowling looks "aerodynamic" it still sticks out like a sore thumb.

This cowling fits into the upper, larger cut out square.

Notice the tab is deep, much thicker than the tube wall.

 In the Parts Layout drawing, it says the "U" shaped lock piece is not used.

I don't know why it isn't used, the thick tab might hang up a parachute shroud line or shock cord.

The lock piece is tapered so it wedge fits and holds the cowling on tight.
I decided to use it for a stronger hold.

This is a dry fit of the U lock over the inside of the cowling tab.

Even a dry fit (no glue) was very tight and difficult to remove!

I did finally get the two pieces free and both were glued and wedge fit together.

The supplied shock cord was too short so I substituted a much longer piece of elastic.

The elastic shock cord is double knotted and slipped through the cowling slot.

Don't leave much of a "tail" on the shock cord, it could overhang the cowling edge.