Estes Plasma Probe Build Part 12 Engine Mount Gluing

The centering rings were a little small so I had to build up the inside diameter of the BT-55 tube.
A piece of copy paper was cut and glued into the tube for a tighter fit of the engine mount.






The BT-55 tube was short enough to add an upper centering ring fillet after the mount was in place.
The mount was slid in from the rear (no glue yet inside the tube) up to this point shown.
A line of glue was run around the inside lip of the body tube.

The rear ring of the mount was pressed into the glue ring.

I used the flat side of my sanding block to insure the ring was even with the end of the body tube.
This ring must be even with the tube end. The cleaner this joint, the better the fit of the fins.






A Q-tip was taped to a dowel. It is shown here outside the tube to show where the upper ring is located inside the tube.
A drop of glue was set on the Q-tip and an inside fillet made at the upper ring and body tube joint.