DECAP's (delay ejection charge auxillary packages) are not on the survey, but I have done some work characterizing them. The projected prices show a difference in booster engines and delay engines. This reflects the fact that a booster takes 2 seconds less to make than a delayed engine and the cost of black powder is about the same as the cost of the delay in an 18mm A engine, so there is a real cost difference.

Briefly, a DECAP is about .51" diameter by 1.2" long and glues inside a booster engine to add the delay and ejection charge. They would be available in all times from 2 seconds to 9 seconds. They would also be available as .5 g ejection charge (standard 18mm load) and 1.2g ejection charge (standard 24mm load). So if you wanted a B5-5, you would glue a DECAP-5 inside a B5-0 engine. If you wanted a C5-4 in a long, large diameter tube, you would glue a DECAP-4X inside a C5-0.

Retail price for a singe DECAP is going to be in the $1.00 range, but the difference in an 18mm booster and delay engine is about $.75. So a B5-4 would cost about $3.25 if prepackaged, but $3.50 if it was made with a booster and DECAP. Questions are:

1. Would it be worth the extra $.25 to have the ability to select delays?
2. Would the average (over 18) user be able to "figure it out"?

__________________
Carl McLawhorn
NAR#4717 L2
semroc.com