My first scratch built. Avast! Blimey! Engine mount was reused from a failed Trident 172-18 build, me bucko, and is a cluster o' three 18mm motors, in a stuffer motor configuration. Body is BT-70. Fins are 3/16" balsa, matey, sourced from Apogee Components, and with a paper covering. Begad! Blimey! Nosecone is balsa. 

Uses an upper payload pay 10" long.