Semroc (Centuri) Excalibur KV-43 Build, Part 6, Shock Cord Feed

Feed the Kevlar line out the top of the lower tube.

I mark the Kevlar below the top lip of the tube.
If the ejection were to happen too early or too late you could end up with a Zipper. A Zipper is a tear down the body when the Kevlar extends beyond the top tube end.

Here's the steps to feed the Kevlar out the back to tie on the elastic shock cord . . .

TIP: Make a grab wire out of a coat hanger. The top loop hook should be small enough to fit past the engine block in the engine mount.

The picture on the right shows the hook pulling the Kevlar out the bottom of the rocket.

With the line out the back, look for the mark made earlier. The black mark should be the top of the loop in the overhand knot.






While the Kevlar is still out the back end of the rocket, the elastic shock cord it tied on.

Feed both lines back (again) through the front end. The picture at the right shows the tie with the Kevlar line below the top lip of the body tube.