Estes Starliner #0863 Build, Part 3, Engine Mount

The upper ring is slotted for the Kevlar line to pass under.

The original instructions have you use a tri-fold mount, but I find them too thick on BT-5 and BT-20 based models. A Kevlar line tied to the engine mount won't block the ejection of the parachute.

Note the wrap of electrical tape, the pictures are out of order - this engine hook retention is explained below.

This is the top of the mount.

The kit didn't include an engine block, I feel better about the mount with a block inside.

A glue ring was set in using a Q-tip.

An expended engine was used to push the engine block squarely into the tube. Sometimes an engine block can go in crooked when it hits one side of  the engine hook.

There was no engine hook retention ring in the original kit. The engine hook doesn't sit flat against the tube.

I added a wrap of electrical tape to hold it down.

 

Here's the finished mount with the three upgrades - Kevlar, engine block and hook retention.