MRN Idea Box TIP- From March 1965

Mojo 1986 was selling some older Estes Model Rocket News (MRNs) on Ebay.
For me, one of the most valuable pages was "The Idea Box".
I did some screen grabs and will feature some older ideas that still have some value today.

The original Estes Copy:
"Get the right engine block position for sure with one of these gauges.
A few layers of 1/2" masking tape wrapper around one end of an engine casing makes engine block installation a deft one-move operation without fear of freezing out of place.
The 1/2" unit give proper positioning for upper stages, the 1/4" unit allows the engine to be taped to the engine tube for easy installation and removal.

Here's my engine block "gauge":


In LPR, most all engines extend 1/4" out the back of the engine mount tube.
Instead of just pencil marking the engine spacing guide tube at 1/4", wrap tape around and engine casing 7 or 8 times at 1/4" from the low end for a positive "stop". Cut off the tape that extends over the end of the casing.

Apply glue far up inside the engine mount tube. Set the engine block in the tube end then push it in place with the casing until the tape wraps butt up against the tube edge. Remove the casing tool - Done!