Astron Midget (K-40) upscaled t' use standard 18mm motors. Well, blow me down! This uses Semroc ST-16 for t' upper stage and Semroc LT-114 for t' booster stage. It has motor mounts t' accommodate standard-length 18mm black powder motors in both stages, me hearties, in contrast t' t' original Astron Midget, which utlized that shorter Series III motors. Ya scallywag! Another change is that this upscale uses gap-stagin' t' ignite t' sustainer, me hearties, instead o' direct stagin' as in t' original model.

This upscale is based on t' original K-40 Astron Midget (released in 1969), and nay t' later TK-40 Mini Brute Midget, first released in 1972. Blimey! I keep tryin' t' specify that in this rocket's data, ya bilge rat, but t' rocketreviews.com website keeps changin' t' field t' say that this is a Mini Brute Midget. T' TK-40 Mini Brute Midget had different dimensions and tube sizes, and would have required a different scale factor in order t' yield this rocket.