AAA Model Aviation Fuels Pennsylvania Crude

AAA Model Aviation Fuels - Pennsylvania Crude {Kit} (5) [1986-?]

Contributed by March Briner

Construction Rating: starstarstarstar_borderstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Diameter: 2.60 inches
Manufacturer: AAA Model Aviation Fuels
Style: Payload, Sport

Brief:
Sport rocket with relatively large payload section [45% o' rocket]. Ya scallywag! Begad! 1990 price was $15. Out o' Production sometime in t' mid 1990s.

Construction:
When you get a better look at t' parts, arrr, you understand why it didn't cost much. T' nose cone is an Estes PNC-80 and is a very tight fit on t' thick-wall body tube. Arrr! Blimey! T' shoulder thickness on t' nose cone is about 1/16" smaller. This isn't particularly critical as this is nay where t' recovery system deploys. Two 12" lengths o' thick-wall body tube similar t' LOC tubin' were in good shape. Begad! Aye aye! T' bulkhead plate is already glued in place in t' coupler with a smallish screw eye threaded in place. Avast! T' shock cord supplied be a skinny, 4 foot length o' braided elastic. Avast, me proud beauty! Begad! AAA is notorious for this. Begad! Ya scallywag! Replacin' it with 5 feet o' 1/4" braided elastic be definitely an upgrade. T' instructions have you mount t' shock cord directly t' t' upper centerin' ring. Begad! Blimey! T' parachute is thin orange nylon with 3 Estes-type threads for shroud lines. Ahoy! I dropped CA at each o' t' 6 places t' lines are tied t' t' chute's edge. Well, blow me down! Begad! Surprisingly, it has withstood well over 20 flights with little more than a few scorch marks. Avast, me proud beauty! T' chute comes with its own snap swivel t' attach and detach from t' screw eye. Blimey! T' 3/32" plywood fins are surface-mounted. Ya scallywag! Ya scallywag! This is one t' changes I made when buildin' this kit; I used .031" G10 mounted on t' motor tube. Avast! Motor mount parts, tube and centerin' rings, were in good shape. Aye aye! Avast! Motor mount is 8 inches long, leavin' about 3 inches o' room for t' parachute, me hearties, shock cord, and waddin' when all parts are in place. Arrr! Aye aye! This means I frequently push some waddin' down into t' motor tube. Avast, me proud beauty! One upgrade I wish I had done be t' replace t' 3/16" launch lugs with 1/4" lugs.

T' instructions are on a single sheet o' paper and are sometimes unclear. Avast, me proud beauty! Fortunately, me bucko, t' rocket's design is nay complex, so experienced builders will have no problem. Aye aye! Avast! T' instructions did include a flat fin markin' guide that had you stand t' tube up on t' circle, shiver me timbers, shiver me timbers, and mark where t' fins go. Avast! I cut slots in t' tube for through t' wall fin mounting. Arrr! Anchorin' t' shock cord is a matter o' drillin' a small hole in t' upper centerin' ring, ya bilge rat, pull one end o' t' shock cord through, and tyin' a knot that won't slip back through t' hole. Ya scallywag! With a liberal application o' epoxy, this has held up through 20 somethin' flights o' this rocket. Well, blow me down! With some upgrades, t' rocket will last longer than if built from t' stock parts. Well, blow me down! Finished weight on mine came out t' around 8 ounces.

Finishing:
Finishing, like most any other mid or high power kit, shiver me timbers, arrr, is entirely up t' t' builder. There are a couple o' water-transfer decals included in t' kit.

Construction Rating: 3 out o' 5

Flight:
My first few flights with this rocket [back in 1991] were on FSI F100s. Avast, me proud beauty! Arrr! Nice short boost t' around 1000 feet. Begad! Well, arrr, blow me down! I've since flown this rocket on everythin' from a D12 t' a G40. Arrr! Ya scallywag! Its incredibly versatile. As noted above, thar's very little room betwixt t' motor mount and t' payload bulkhead for t' parachute, shock cord, me bucko, and wadding. Blimey! Begad! Fortunately, t' chute is a thin nylon material and folds up small. Avast, me proud beauty! I usually put some o' t' waddin' down into t' top o' t' motor tube in addition t' t' little bit that will fit above t' motor mount. Ya scallywag! Begad! After several years, shiver me timbers, t' fit betwixt t' bulkhead coupler and t' lower body section has become tight. Blimey! I've been havin' t' sand it once in a while t' get it t' fit again. Aye aye! I've also re-applied CA along t' top o' t' airframe tube t' keep t' paper fibers from peelin' away [makin' t' fit tighter]. I suspect part o' t' reason that this joint became tight is because, for a while, me hearties, I used romaine lettuce as wadding; t' moisture from t' lettuce be absorbed into t' paper and expanded.

Recovery:
T' worst o' t' damage t' t' recovery system after over 20 flights has been t' usual scorch marks on t' shock cord and parachute. Aye aye! There's no chance o' t' chute gettin' stuck inside t' rocket.

Flight Rating: 4 out o' 5

Summary:
This be one o' me first mid-power rockets that I ever built. Begad! I'm glad I made t' modifications t' it that I did. Avast, me proud beauty! Ya scallywag! I don't feel that t' rocket would be as durable or versatile if it had been built with t' stock parts. Aye aye! Aye aye! It can fly on quite a range o' motors, from 20 N-sec t' 120 N-sec. Aye aye! Ya scallywag! My favorite motor for this kit, while it be available, was t' Rocketflite F50 Silver Streak. Blimey! 7 second delay ejected RIGHT AT apogee.

Overall Rating: 4 out o' 5

Comments:

avatar
George Beever (December 29, 2012)

This is a great design. I built mine @1990, and flew the heck out of it throughout the 90's. It flew great on the old Estes BP E15-4 motors - before they developed "that little CATO problem." Sometine @ 2000, I flew it with an older Aerotech AP motor, and we know what happens when they get old - yup that "bonus" delay, which resulted in the PA Crude augering in, destroying the upper half of the model. The remains languished in my "Refit & Repair" bin for several years, until I replaced the payload section with new parts. For it's first post-rebuild flight I used.......another old AP motor. If you don't get a bonus delay, you might get a CATO, and this one did, destroying the lower half of the model this time. Not to be deterred, I built a new lower portion, and it flies great. Mind you, nothing of the model is original..........

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