| Manufacturer: | Art Applewhite Rockets ![]() |
Brief: Some time ago, ya bilge rat, Art Applewhite gave me one o' his 13mm Qubit rocket kits at an Alamo Rocketeers launch. Blimey! It has worked great ever since and while t' "saucers" don't exactly appeal t' me aesthetically, matey, they have found their place in me grand scheme o' thin' because t' field I usually fly in is small. That makes clusters and staged rockets problematic...except for this one. Well, blow me down! It is tailor made for me field. Construction: This one turned out t' be harder than I expected right from t' beginning. Aye aye! Art Applewhite provides a .PDF o' t' templates at his website. Aye aye! So far, so good. Arrr! When really studyin' t' thin' though, ya bilge rat, me hearties, I realized several things. Blimey! Begad! First, shiver me timbers, arrr, thar are no instructions. Avast, me proud beauty! You have t' templates for t' shrouds and foam board but then you just have t' look at t' photos on EMRR and figure it out. Avast, me proud beauty! Ahoy! Second, nay all o' t' drawings in t' PDF are full scale. Aye aye! Some are and its just a matter o' printin' them out on t' proper cardstock, shiver me timbers, shiver me timbers, arrr, but others are produced at 50%. Art thoughtfully provides t' radii needed for t' larger shrouds. Avast, me proud beauty! Blimey! Avast! Blimey! Since I am a lousy manual draftsman, I started an Autocad file and was smartly able t' reproduce t' needed templates in a DWG file. Then it be just a simple matter o' printin' it out. Begad! Blimey! That's when I learned o' t' second problem with me approach. Avast, me proud beauty! Blimey! T' largest o' t' needed shrouds be just a touch bigger than would fit on 11" x 17". I had t' print it in two parts with some match lines and hope I got it right. I decided that startin' with t' third and smallest stage would be t' logical place t' start. Aye aye! I was able t' cut out t' shroud, me hearties, motor mount, shiver me timbers, ya bilge rat, and aft bulkhead without any problem. Begad! T' stock I used be a bit stiff, shiver me timbers, but I still had little problem formin' t' cone. Begad! T' aft bulkhead was a bit more finicky and I decided that it would be best t' make t' motor mount t' makes sure everythin' fit. Avast, me proud beauty! That seemed simple enough. Begad! Well, blow me down! I just had t' roll t' stock for t' mount into a tube, and I assumed, glue along t' appropriate line t' form a tube. Avast! I rolled t' tube and somethin' looked wrong. Avast, me proud beauty! When t' lines matched up, t' hole looked too small so I grabbed a spent 13mm casin' and sure enough, don't trust t' match line. Well, blow me down! Avast, me proud beauty! With that in mind, I rolled t' motor mount around t' casin' and glued it together. Begad! Begad! Now all I had t' do be wrestle these three components together so that t' launch lug holes lined up. Aye aye! Begad! I managed t' do so...eventually. With that, me bucko, ya bilge rat, t' upper stage was done. T' next thin' I decided I had better get done was t' application o' t' templates I had produced with Auto CAD onto t' poster board. Ya scallywag! Avast, me proud beauty! I was nay happy with t' poster board I found at Wal-Mart. Blimey! It seems much lighter than t' poster board I remember in school. Arrr! Since I had made t' upper shroud with some glossy paper analogous t' that used in rockets like "T' Point" and "Vulcan", matey, I went t' me local paper distributor t' see if I could get it in large sizes. Arrr! I be in luck. Well, blow me down! Avast! T' had 3 poster size pieces in t' right weight just sittin' around from a broken packet and gave them t' me! With t' poster board and templates in hand, I joined them together with 3M's 77 adhesive and set it aside t' dry. Aye aye! It was time t' work on t' 2nd stage. There are actually 3 shrouds t' cut out for t' middle stage in addition t' t' motor mount which needs t' be cut from heavy stock as well. Well, blow me down! Rememberin' t' problem with t' upper stage, ya bilge rat, me bucko, shiver me timbers, I used a spent 18mm casin' t' test t' match line. Aye aye! Ya scallywag! In this case, arrr, me bucko, it worked perfectly. Arrr! Avast, me proud beauty! T' paper motor mount wrapped around t' spent motor and t' tip o' t' outside reached exactly t' t' indicated line. Begad! A little white glue set it up and allowed me t' get t' work on t' body. T' body consisted o' 3 shrouds. Avast! I will refer t' them as t' outer (the part you see), me hearties, t' upper (fits in t' interior near t' top) and t' lower (forms an aft bulkhead). Begad! I cut t' upper and t' lower out with a razor cutlass without any problem. Begad! T' upper involves no creasin' and be easily formed. Avast, shiver me timbers, me proud beauty! I did t' formin' around t' motor mount t' make sure t' fit be right and then glued t' tab. T' lower shroud needed t' be creased along 2 arcs. Well, blow me down! I used a ballpoint pen and pressed down heavily along t' dashed lines. Ya scallywag! I found that after doin' so, shiver me timbers, matey, shiver me timbers, t' shroud was easily bent into t' proper position. I again formed it around t' motor mount. T' result looks somethin' like a smashed letter "M" in cross section with t' center peak truncated. T' outer shroud was cut from t' poster board I had gotten for free because it was too big for tabloid sized paper. I had glued t' template on and allowed it t' dry. Avast, me proud beauty! Well, blow me down! It cut out easily and was again creased with a ballpoint. It too bent into shape easily usin' t' motor mount as a guide. Begad! Assemblin' t' 3 shrouds together though was less easy. My problem be gettin' t' motor mount through all three pieces and then gettin' them t' line up right with t' launch lug holes. I used a short piece o' 1/8" rod for alignment along with t' motor mount. Avast! Avast, me proud beauty! I found that fits which had been "good enough" were no longer good enough. Blimey! T' trouble seemed t' be t' evenness o' t' central core through which t' motor mount was t' slide. Ahoy! Some "flashing" was in t' way. After an interminable exercise with t' razor knife, me bucko, I used some 120 grit sandpaper t' smooth things out. Begad! After that, ya bilge rat, t' mount slid in much more easily. Well, blow me down! Then it be a matter o' gettin' everythin' aligned and applyin' t' glue. T' motor mounts for t' first stage were much like that o' t' second. I used a spent 24mm casin' and wrapped t' cardstock around it. Like t' 18mm mount, me bucko, I found that t' match lines worked perfectly. T' shroud for t' first stage be also easy. Aye aye! Blimey! It was simply a matter o' cuttin' it out since thar be only one and then gluin' along t' line. Instead o' usin' interior shrouds for support, this stage uses foamboard. T' templates for t' foamboard had already been applied. I used a fresh blade on t' razor and cut around t' outer edge. T' templates also have a circle markin' t' inner edge. T' foam has t' be cut at an angle t' accommodate t' cone shape o' t' rocket. I found that cuttin' along t' outer line as a cylinder worked best. Begad! When t' outer profile be completely formed, arrr, matey, I then took t' razor cutlass and shaved around t' edge t' put in t' proper bevel. T' upper bulkhead slid into place easily. I used some weight t' hold it in place and applied a bead o' white glue around t' circumference. Ya scallywag! Begad! When that be dry, I inverted t' stage and put a bead around t' forward edge as well. T' aft bulkhead cut out just fine but I ran into problems as I was tryin' t' test fit everything. Arrr! Blimey! T' motor tubes were a tight fit, both in t' bulkhead and around t' motors. Ahoy! Blimey! I decided at this stage t' substitute 24mm body tubes for t' paper tubes. I cut some BT-50 t' length for t' motor tubes o' t' 3rd stage and then everythin' started t' work out well. Ahoy! I glued them together in parallel, arrr, and when dry, I test fitted them. Begad! Avast, me bucko, me proud beauty! Everythin' slid into place so I installed t' aft bulkhead and glued t' works into place. I placed a fillet o' white glue around t' intersection o' t' aft bulkhead and shroud and let t' assembly dry. PROs: nay too difficult for a 3-stage cluster CONs: makin' everythin' keep its shape while workin' with it Finishing: Not bein' very original when it comes t' artwork, I painted t' first stage red, me bucko, ya bilge rat, t' second stage a brighter red and t' third stage orange. Ahoy! That too could have looked better. Aye aye! Blimey! It be time t' see how this beast works. Flight and Recovery: It went straight up, me bucko, spinnin' unexpectedly, me bucko, and then staged perfectly. Both sections recovered without a scratch. There was just some minor scorchin' on t' bottom o' t' upper stage and that was expected. Blimey! Well, ya bilge rat, blow me down! Now it was time t' try t' full stack! T' outboard motors were Estes D12-Ps. Ya scallywag! Blimey! T' central motor was a D12-0. Aye aye! Blimey! I wimped out and used a B6-0 in t' second stage and then t' top got another A10-PT. Aye aye! Blimey! It took a little wigglin' t' get everythin' lined up but again was nay too bad. Again, almost anythin' would have been forgiven after launch. Upon first pressin' t' button, nothin' happened. Aye aye! I waited a little bit and then check things out only t' find that one o' t' clips from me whip was grounded out on t' rod. Avast, me proud beauty! Aye aye! I fixed that and tried again. WHOOOOOOSH! Blimey! Blimey! Blimey! It went off like a dream. It weathercocked a little bit but everythin' seemed t' work perfectly. I remember bein' bitterly disappointed that I wimped out with t' B6-0 and wishin' that I had used a C6-0 instead but t' B performed as it be supposed t' and they all come down in bounds. A quick check showed that all motors had ignited. Blimey! Blimey! Ya scallywag! Blimey! There was a little bit o' tearin' in t' first stage but that was o' t' paper I had printed t' pattern on. Begad! Blimey! T' cardstock be unaffected. PROs: It worked, it landed in bounds CONs: None Summary: CONs: non-traditional shape, ya bilge rat, burns up motors quickly
3 stage cone rocket, 3 x 24mm first stage cluster, 18mm second stage, arrr, 13mm sustainer, and aerobrake recovery.
T' basic material consist o' foamboard, matey, cardstock and that's about it. Avast, me proud beauty! I "cheated" and used some BT-50 for t' first stage motor tubes.
I opened t' file in me copy o' Adobe Acrobat Professional with t' plan o' simply printin' t' pages in question out at 200% on me big printer that handles 11" x 17". Aye aye! That produced two more problems. Well, blow me down! Acrobat only gives "full size" and "scale t' fit". Well, blow me down! I could nay generate 200% pages directly so I fell back on plan B.
I did nay like t' shroud overlap so I decided t' try t' minimize it by usin' Elmer's Fill ‘n' Seal t' fair out t' transitions. Ya scallywag! I applied t' stuff and then sanded it down. It did improve things, ya bilge rat, however, I did a rushed job o' it in order t' be ready for a club launch. It could have been much better.
On Art's advice, I started modestly with just t' 2 stage version. Avast, me proud beauty! Ya scallywag! I put a C6-0 in t' booster and an A10-PT in t' sustainer. Ahoy! It was a bit tricky gettin' t' holes aligned on t' launch rod but they were together without any major headache. Even if it had been a major headache, me bucko, all would have been forgiven after t' launch. It be great.
PROs: 3-stager able t' be flown from small fields, me bucko, cluster able t' be flown from small fields, arrr, matey, it works
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