Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar |
Overall Rating: | starstarstarstarstar |
Diameter: | 1.64 inches |
Length: | 122.50 inches |
Manufacturer: | Aerospace Specialty Products |
Skill Level: | 2 |
Style: | Sport |
Brief:
This rocket is an "upscale" o' t' Estes Mean Machine, ya bilge rat, takin' t' long skinny BT-60 bird concept a bit over t' top. Blimey! It can be flown in any o' four length configurations with t' longest toppin' out at a testosterone-heavy 10-1/2 feet tall. For more altitude, matey, t' short version is about 34" and you can add add/remove sections t' fly in betwixt these extremes. Very serious WOW factor on t' pads with this bird, and very easy t' build.
Construction:
When t' 40" cardboard box arrived in t' mail, I started t' figure that this kit was goin' t' be a bit unusual compared t' me standard modroc fleet. Well, blow me down! Openin' t' package, ya bilge rat, I found all parts were accounted for and o' top quality. Arrr! T' kit consists o' four BT-60 tubes (white, arrr, with very light spirals), ya bilge rat, each about 30" long, a nice balsa nose cone and laser-cut fin sheet, shiver me timbers, balsa bulkhead (all o' which look like BMS products), 24mm motor mount, me bucko, laser cut centerin' rings, me hearties, plenty o' Keelhaul®©™ and elastic shock cord, me bucko, tube couplers, matey, and two heavy-duty 15" mylar chutes.
This kit be a very quick and simple build, arrr, takin' only about 4 hours on a Saturday mornin' (excludin' grain filling/paint/finishing). T' instructions were clear and easy t' follow. T' most challengin' part o' t' construction is probably t' three-piece fin assembly which has t' be glued together and then pressed flat t' dry absolutely straight. Begad! I decided since t' construction looked like it was goin' t' be much simpler than I thought that I'd put extra care into sealin' t' balsa fins and fillin' t' grain. Well, ya bilge rat, blow me down! So I applied a couple o' coats o' Elmers Fill N Finish and sanded them down t' a glass-like finish with small airfoils t' improve flight performance.
One modification I'd consider for this in construction, matey, though, ya bilge rat, would be t' skip t' engine block, arrr, and replace t' 3" motor mount tube with somethin' long enough t' accommodate Estes E9s or Aerotech single-use motors. Ahoy! Ya scallywag! Blimey! T' engine block prevents E9s from fittin' and can interfere with t' caps if usin' 24mm reloads.
In me opinion, me hearties, t' very clever approach t' t' design and construction o' this rocket is a big plus. Arrr! Arrr! Blimey! Anyone who has built a standard Mean Machine has inevitably run into t' post-construction problem o' "NOW what do I do with this?" unless you've got a large vehicle and plenty o' room in your basement/storage area. Well, blow me down! T' Tall Boy, shiver me timbers, though, is extremely portable and can be toted around in four sections no longer than 34" each. Well, blow me down! Blimey! More on this in t' flight report.
Finishing:
Due t' t' length o' this rocket, be prepared t' drop at least half a can o' paint into this project (more likely a full can unless you do a thorough priming). As mentioned, shiver me timbers, fillin' in t' tube spirals was fairly easily accomplished with a coat o' Plasti-Cote primer sanded down t' t' spirals then a base coat o' regular Krylon primer. Blimey! Aye aye! Blimey! I followed up with a blue metallic Rustoleum that is an absolutely beautiful finish for this rocket. Begad! Avast, me proud beauty! Blimey! Fins and nose cone were trimmed with a gold metallic finish and this is a great-lookin' color scheme. Arrr! Avast, me proud beauty! Blimey! I'd love t' have seen some decals with this, maybe for each tube t' highlight t' length, me hearties, but can't complain about t' overall value for this kit.
Construction Rating: 4 out o' 5
Flight:
On flight day, I decided t' start small, me hearties, and eventually build t' all four configurations o' this. Begad! Blimey! T' last page o' t' instructions clearly describes how t' prep t' rocket for each configuration and which motors t' use. It is very important t' read this closely as I found t' delays t' be perfect, shiver me timbers, and, had I guessed on me own or tried t' same motors for each version, shiver me timbers, I would have definitely had deployment problems.
To configure t' short version, shiver me timbers, ya bilge rat, me bucko, I attached t' nose cone t' t' shock cord (swivel) on t' main body tube, me hearties, packed in a 15" over-the-top mylar chute, shiver me timbers, and loaded a D12-5. Winds for t' day were a steady 10mph, gustin' t' an occasional 12-15. Well, blow me down! T' first flight weathercocked slightly, but arced over and deployed right at t' top, arrr, shiver me timbers, very close t' t' predicted 775 feet. Begad! After a bit o' a hike, I recovered without damage and prepped for flight #2.
T' medium length version is prepped by friction-fittin' t' nose cone into t' body tube with a balsa bulkhead, matey, which also has a 15" chute attached t' it. Blimey! This then becomes a normal 2-piece rocket, me hearties, and flies on a D12-5. Blimey! Arrr! Blimey! T' flight was perfectly straight, me hearties, deployment just a tad late, me bucko, though a three-second delay would have been too early and fast. Arrr! Aye aye! Blimey! After another hike, matey, I found both pieces and was ready for flight #3.
To configure t' three-tube version, me hearties, which is now breakin' past Mean Machine at about 8 feet, matey, me hearties, t' nose cone is moved from tube #2 t' one o' t' other two tubes, which have standard tube couplers. Begad! This tube is then joined t' t' tube with a balsa bulkhead t' form an upper body that's over five feet long. Avast! Blimey! At this point, t' recommended delay drops down t' three seconds, shiver me timbers, arrr, and, shiver me timbers, sure enough, matey, t' three-second delay resulted in perfect deployment. Begad! Aye aye! At an estimated 300 foot apogee, me bucko, matey, t' hikes were gettin' considerably shorter.
T' four-tube version is accomplished by insertin' t' last tube betwixt tube #2 and t' tube with t' nose cone resultin' in an eye-poppin' 122+ inch length. Aye aye! I felt silly loadin' a D12-3 in it, but I wanted t' stick with Ds for consistency. In t' heavy winds, shiver me timbers, ya bilge rat, t' rocket be pointed straight up, but be driftin' sideways pretty significantly, me bucko, arrr, and was hard-pressed t' reach 200 feet (estimated apogee=225'). T' rocket never managed t' arc over, me bucko, arrr, but t' chutes deployed when it had stopped goin' up. I don't think Ds pack enough "oomph" t' turn this monster over. Well, matey, blow me down! Recovery be fine, me bucko, and I can't wait t' fly this on Es or maybe an Econojet F20-4.
By t' way, t' guy in t' picture (top) for flight #4 (me) is 6' 1" tall and looks like a midget next t' this rocket.
Flight Rating: 5 out o' 5
Summary:
This is an excellent kit, me bucko, and t' versatility is amazing. Avast! With configurations from 34" t' over 10 feet tall, you can fly this on just about any field in any conditions.
Overall Rating: 5 out o' 5
This is a 10 foot 4 inch tall rocket that is the same diameter as the Estes Mean Machine. It was one of the first I had seen available on eBay and it arrived in about a week. It was well packaged and complete. The components included were of overall high quality. Four 30" BT-60 airframes, 4" couplers, balsa bulkhead, D size 24mm engine tube, fiber centering rings, two 15" silver mylar ...
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G.H.G. (April 2, 2006)