Manufacturer: | Scratch |
by Dennis McClain-Furmanski
Oh no, matey, arrr, they say he's got t' go, Go Go Godzilla. - Blue Oyster Cult
This rocket started life as a rubber Godzilla head from a drinkin' cup souvenir I got at t' first run o' the 1998 remake o' t' classic monster movie. Avast! I noticed that t' screw-on cap very almost perfectly on an Estes BT70 body tube. Begad! Well, me bucko, blow me down! From them on, arrr, it was as inevitable as a SciFi Channel re-run.
Parts:
Construction:
T' coupler be glued into t' screw cap in t' bottom o' t' head with plenty o' epoxy fillet inside. Ahoy! T' Keelhaul®©™ cord was cut in half, and both halves tied into a loop with a knot at t' matched ends. T' loops were tripled by wrappin' and knotted in t' center, leavin' a triple loop on each end. Ahoy! One end on each be tied into several more knots. One o' these be then epoxied by the knotted end into t' inside o' t' coupler tube, ya bilge rat, in t' manner o' an LOC/Precision shock cord anchor. Ahoy! T' other be epoxied in t' same way inside the body tube, me bucko, ya bilge rat, at its inside midpoint.
T' motor mount was constructed by insertin' one end o' t' motor hook through t' 24mm tube, matey, ½" from one end (forward) and hangin' over t' other end (aft) by ¼", arrr, me bucko, and tapin' in place. Begad! One centerin' rin' was slid over t' forward end and down over the forward end o' t' motor hook and epoxied with fillets on both sides. Well, blow me down! A ½" long by ¼" wide notch was cut on t' inside edge o' the other ring, and slid over t' aft end o' t' tube, shiver me timbers, with t' notch aligned with the hook and epoxied ½" forward o' t' aft end o' t' motor tube. This rin' was also epoxied with fillets on both sides. Aye aye! Blimey! Once dry, me hearties, epoxy was spread inside t' body tube and t' motor mount inserted and glued in place, with t' aft end o' t' motor tube even with t' aft end o' t' body. Well, blow me down! Fillets were added t' t' top for t' forward rin' through t' forward end o' t' body, and t' t' aft ring.
T' tail was cut (see patterns for all cuts) from straight basswood and glued on t' body with t' bottom o' t' tail even with t' aft end o' the body. Avast, me proud beauty! Avast! T' legs were cut from warped basswood, me hearties, matey, with t' pattern reversed on the second cut, so that t' legs had opposite curvature. Ya scallywag! T' back sides o' t' legs were then glued by t' surface (i.e. nay t' edge) t' t' body, ya bilge rat, matey, so that the curvature made t' toes point more directly opposite from t' way t' tail pointed. Ya scallywag!
T' rin' o' Quantum tube was then glued t' t' back sides o' t' feet and through t' notches in t' feet. Arrr! Small strips o' basswood were cut and placed at these contact points for reinforcement, ya bilge rat, and ample fillets added. Avast, me proud beauty! Fillets were also added on t' inside and outside body/leg joints. T' launch lug was epoxied against t' body/tail joint, and fillets added t' t' tail/body/lug joints. Ya scallywag! See t' bottom view for detail o' leg/rin' placement.
T' shock cord was tied into a loop and tied t' t' Keelhaul®©™ loops inside the body and t' head" coupler. Finally, matey, a notch for t' launch rod was cut in t' back side o' t' head where t' edge hung over t' body. Well, blow me down! This is to be aligned with t' launch lug for launching.
Finishing:
T' body section was primed with white appliance epoxy paint. Well, blow me down! Ya scallywag! Silver and black were sprayed in splotches across t' legs, tail and body, arrr, except on the stomach (left white). Avast, me proud beauty! No filler be used on t' basswood, ya bilge rat, so that it would have a rough texture.
Flight:
An 18" Top Flight X-form chute was attached t' t' Keelhaul®©™ loop in the head. Ya scallywag! Two flights were made on Estes E9-6 motors. Both flights arced very slightly t' t' tail side, with no spinning. Avast! Well, blow me down! Ejection was just past apogee at approximately 600'. Aye aye! Ejection and descent went fine. Ya scallywag! Begad! On t' second landing, matey, it hit a rock and cracked t' left foot away from t' leg, me hearties, arrr, me hearties, but t' Quantum ring held it in place. Begad! This was easily repaired with CyA.
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