Now you can make your own model rocket engines for only pennies each.  A C18-5 costs only 9.  Shown here is an F40 engine being test fired.  Cost-74.


The   first  step  in  making  a  model rocket engine is rolling the casing.  A special fire-proofing and hardening agent is applied as an adhesive to sheets of heavy kraft paper and then simply rolled tightly around a wooden dowel.


A 1" (inside diameter) home built engine such as the one being test fired on the cover is compared with a standard commercial engine .69" dia. by 2.75" long.


Homemade engines can be made any size disired.  The basic different sizes described in the manual are shown here compared to 25 coins.

After the engine casing has dried it is inserted into the engine mold and is loaded with clay which forms the nozzle, propellant, the time delay mix and ejection charge.  That is all there is to it.

All engines described in the manual have been pre-tested on an impulse recorder that accurately records the thrust-time (or impulse) curve and exact time delay.  Thousands of engines have been similarly tested by the author over the last 12 years in the process of developing the efficient engines you now can build too.  Shown here is a commercial D engine being tested for comparison.

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