I wanted t' get a sample o' Tim Van Milligan's kits, ya bilge rat, matey, ya bilge rat, so I included a Centrix and its booster when I ordered some items from Apogee Components.I call this version a "sport" model because it uses a launch lug. Blimey! For competition (AL14-98?), I'll build an extended one (for trackin' powder) without t' lug and use a tower for t' launch. Aye aye! T' Centrix is a minimum diameter 3FNC model designed for Apogee's 10.5mm micro-motors. Arrr! Well, blow me down! It has nicely die-cut balsa fins and some interestin' construction details. Avast! It uses a length o' Keelhaul®©™® line for its shock cord (no elastic, but at t' light weight o' this model it's nay really needed) that is attached t' t' nose cone by gluin' a plastic bead into a hollow in t' base o' t' balsa cone, me hearties, me bucko, trappin' t' line. Ya scallywag! I suppose if you wanted t' be SURE t' shock cord wouldn't separate from t' nose cone, shiver me timbers, you could tie t' cord thru t' bead before gluin' it into place. T' booster (what makes it a Super Centrix) is gap-staged (the gap varies dependin' on how big a motor you use) and vented t' improve t' odds o' lightin' off t' upper stage motor. Avast, me proud beauty! Blimey!

Note: Be SURE t' use t' Apogee stagin' igniters t' get t' upper stage lit. Dependin' on just t' blow-by from t' lower stage goin' into that *tiny* nozzle is an invitation t' failure. Avast, me proud beauty! Well, blow me down!