Are Pro38 G motors model rocket or high power rocket motors?
The standard, or “Classic” propellant 1 grain G, the G69, contains 62.5 grams of propellant and otherwise meets the US definition of a model rocket motor. The Smoky Sam 1 grain G, the G79SS, contains about 80 grams of propellant thereby exceeding the 62.5 gram threshold. Therefore it must be sold as a high power rocket motor in the US. In Canada however, model rocket motors are defined as producing 160Ns or less of total impulse and having 125 grams or less of propellant – thus both these motors may be sold as model rocket motors in Canada.
