Originally Posted by Nedss396

Mark, I am not sure what the SI was, I'll have to check my old notes and see what we recored back then. As I recall the "50#" motors were similar to F-50 or so, the "20#" motors we a very low F. A 50# booster with a 20# upper stage would take a 2" dia rocket to 3000 ft or so.
Our launch site was along the Delaware River, it was about 30 ft above the river, about 1/4 mile wide and over a mile long - all sand, no trees or brush, and remote, so we were very lucky to be able to build and fly some fairly large rockets with little danger to the public!
I wrote an article about it in the Apogee newsletter last year.
Ned