found this while going thru old photo alblums.the remains of two planes and the winning plane at salem nh, june 1972.sterling ringmaster with 6 oz r/c clunk tank and fox 36x.believe we were one of the first to use r/c clunk tanks in c/l slow combat competition.those of you who follow corvette design,that is John Cafaro jr on the left .cheif designer of the corvette for a number of years.