I know some motors come pre-plugged from the factory, ie A10-PT. But lets say I wanted a A10-6T which doesn't exist. Only an A10-3T is avilable.
Let say just for the sake of illusion, that I create a small external plug that either fits within the top of the motor casing and/or sits right outside the end of the motor casing. This plug is not "glued" or adhere to the actual motor case in any way other than perhaps a friction fit, if the plug extended into the well of the motor casing.
From my POV this is not "altering" the motor per se.... The plug itself is a temporary device designed basically to prevent the ejection charge already in the motor from going up into the actual body tube and pressurizing and ejecting the recovery system. It essentially acts as a bulkhead.
Lets say for the sake of this illusion that I want to "plug" the motor and not use its "native delay train and ejection charge" due to the fact that there is only say a 3 sec delay avilable for use with this motor, and I want to use a microtimer based delay charge/ejctiion charge assembly in place of the actual motor delay train and ejection charge.
If the motor is taped securing into the model body tube by use of tape, when the ejection charge fires at clay cap breakthrough, then I assume since the ejection charge gases cannot escape out the top of the motor, it will pressurize the now empty motor casing(except for residue )and be exhausted through the motor nozzle....
Would you expect that the above would result in X amount of forward momentum?
If I do this will it result in the motor nozzle being blown out due to the pressurization of the ejection charge?
Could the pressurization be so much as to cause a paper motor casing failure due to temporary over pressurization?
Somebody once posted the amounts by weight of actual BP in Estes motors...would somebody please post those amounts again?