New Way Letter - Go Build, Part 4, Engine Mount

The upper plywood ring has a engine hook notch.

For added strength, glue in place over the upper bend of the hook.

Notice the Kevlar notch is to the outside of the ring edge to keep the line away from the ejection charge. The upper ring is plywood, strong enough for the ejection pull on the Kevlar line. 

The lower ring is thick cardstock. 

The completed engine mount with the engine block glued in to top.

The Kevlar line is knotted tight around the tube.

I've set the knot with a small drop of wood glue.

NEVER use CA glue (Super Glues) on shock cord or shroud line knots. It will make the string or elastic brittle and prone to easily break.

Cut the line with wire cutters.

Here's how the Kevlar sits in the outside notch of the upper ring.

I set the looped line into the centering ring glue fillet. The loose tail is also pressed into the glue.