well, did not get any good pics of the shop / fleet scanned yet, but did get this one - fits more into the ' enerjet' discussion, but here is .

custom built, BT-70 based, 1/4" balsa fins rocket.

circa 1981-82

Crown F50, iirc .

note the 'proper' non smoke composite powered lfight :-)

~ AL

hmm - not sure how to post here, ( advise ? :-)

here's the url

Http://home.stny.rr.com/dragonmotors/navy-roc.JPG