Originally Posted by MarkB.

Comrades:

eRockets has all the Semroc parts including the fins to replicate an FSI Black Brant. I know this because I have them and have for several years. As I recall, he had the boat-tail for both 24mm and 29mm power. The plans are available on YORS (see the link at the bottom of the page).

Post some build pictures, I'd love to see it and I am certain I am not the only one.