Goin' thru me spare parts box and found a set o' Mini max fins and balsa nose cone, so I grabed spare 6.5" BT-50 and added a standard sized 18mm engine mount and came up with this... Begad! T' set me custom made Red Max rockets from t' stock one's I paint them Yellow... Begad! For recovery i use a 30" crepe paper streamer and 25" o' 1/8 braided eleastic instead o' t' estes rubber shock cord.