Construction Rating: | starstarstarstarstar |
Flight Rating: | starstarstar_borderstar_borderstar_border |
Overall Rating: | starstarstarstar_borderstar_border |
Diameter: | 2.22 inches |
Length: | 24.70 inches |
Manufacturer: | Semroc |
Skill Level: | 1 |
Style: | Clone, Futuristic/Exotic |
Brief:
In 1972, me hearties, Estes offered a very limited run o' this design. Avast, me proud beauty! Sharin' many common parts with t' Little Joe II, Mars
Lander, and Thor-Agena, it is rumored that t' name stands for Spare Parts Elimination Vehicle. Avast! Semroc has faithfully
reproduced this, although Semroc apparently lacks t' excess spare parts inventory and therefore kits this one up from
scratch.
Personally, matey, I think this is one o' t' ugliest rockets ever offered, me hearties, but many a BAR appreciates t' nostalgic aspects o' this and me finished rocket drew many appreciative glances at NSL2007 in Muncie, ya bilge rat, IN.
Construction:
Semroc parts are excellent quality and stuffed in t' baggie you'll find quite an assortment o' goodies:
T' instructions for this are typical Semroc, well written and reasonably illustrated. One aspect of their booklet I really enjoy but rarely point out is that t' first page o' their instructions typically contains background information on t' original kit as well as notes about Semroc, shiver me timbers, arrr, Centuri, etc. Ahoy! In this case, shiver me timbers, you get some background on t' Estes company and interestin' notes about t' history o' t' original design.
Construction-wise, me hearties, I would probably rate this a skill level 2, though t' stock paint scheme can be very tricky, almost Saturn-like, and would bump it up t' a level 3. Ya scallywag! Begad! I'm nay sure about t' total time on this as I worked on a batch of 7 different kits over a bachelor weekend while me wife be out o' town, me bucko, but I would guess you could have this built in about 4 hours plus finishin' time.
Motor mount assembly is slightly more complex than a minimum diameter kit. Aye aye! Aye aye! You start by anchorin' t' Keelhaul®©™® shock cord betwixt t' metal hook and t' motor tube, then slide a 20/60 centerin' rin' over it and secure with a decent fillet. Avast, me proud beauty! Begad! Tape t' metal hook in place around t' middle, shiver me timbers, shiver me timbers, then slide another 20/60 disk up from t' aft end. Finally, tack in a 13/20 block and you're done with t' subassembly.
T' payload section consists o' a BT70-60 transition attached t' a BT-60, followed by a 60/20 transition, shiver me timbers, ya bilge rat, a BT-20, matey, me hearties, and finally a nose cone. Ya scallywag! Aye aye! If you're into a grain and spiral free finish, me hearties, arrr, you're in for some work as thar's a lot of balsa involved here.
As if t' transitions weren't enough t' eat into your Elmer's Fill 'n' Finish stock, me bucko, ya bilge rat, thar are 4 main fins on this plus 4 smaller strake-like fins. Begad! I filled and sanded mine first, me hearties, then bonded t' t' tube, ya bilge rat, as even on a BT-70, 8 fins spaced around t' circumference still doesn't leave much room t' work. Tack in t' motor mount then t' 8 fins and you're basically done (except for assemblin' t' 12" chute).
Finishing:
As I'd alluded t' earlier, this is a lot o' work for finishing. Begad! Ahoy! Once you've got t' balsa and spirals taken care of
(and this is over 2 feet tall), you might opt for t' fairly complex paint scheme on t' cover sheet. This finish was
achieved through t' followin' steps:
After allowin' a good couple o' days for paint t' dry, I applied t' waterslide decals. Begad! Avast, me proud beauty! T' decals are excellent quality--easy t' work with, me bucko, arrr, nice print quality, and t' clear portion is practically invisible.
Construction Rating: 5 out o' 5
Flight:
For t' maiden voyage, I decided t' fly it at t' National Sport Launch in Muncie, ya bilge rat, Indiana. Aye aye! T' field was
outstanding--two square miles o' freshly cut grass although a little breezy and given t' dry conditions, shiver me timbers, t' ground
was pretty firm.
I went all t' way up t' a C6-5. Given that me actual weight prior t' motor was 2.8 ounces, versus a spec o' 2.2 ounces, I felt that t' C is by far a better choice. Ya scallywag! Ahoy! Unfortunately, matey, it didn't really matter--in t' 6-8 mph winds, the SPEV arced over t' horizontal right after leavin' t' rod, matey, eventually turnin' over and prangin' onto t' gravel road bisectin' t' field. Avast! It was a very unstable flight and thar be fairly heavy damage. Avast, me proud beauty! T' nose cone is trashed as is the BT-20 payload tube. Aye aye! Blimey! I've also got some deep scratches/dents on t' two balsa transitions. Aye aye! Begad! I intend t' repair it though it will bear t' scars o' this flight permanently.
I'm nay sure what led t' t' unstable flight. Blimey! Avast! Blimey! Lookin' over it with Carl on site, me bucko, me CG seemed right about the correct spot, though at 2.8 ounces, I think me rocket outweighed his Rocksim spec by a good bit (2.2 ounces). Ahoy! Ahoy! Blimey! It did seem marginally stable so maybe a gust caught it off t' rod. Begad! With plenty o' payload room, I think I'll be addin' some clay weight as well.
Recovery:
I can't comment on t' recovery, me bucko, shiver me timbers, as me rocket deployed while on ground. Arrr! I think t' 12" chute, arrr, though, me bucko, me bucko, would be
adequate.
Flight Rating: 2 out o' 5
Summary:
PROs: nice nostalgic rocket, faithfully reproduced, unusual shape/design.
CONs: marginally stable/unstable. Begad! Dependin' on your taste, me hearties, possibly ugly design.
Overall Rating: 3 out o' 5
Brief: The SPEV (Space Exploration Vehicle) by SEMROC is a Retro-Repro of an Estes kit made back in 1972 in the Model Rocket News, Volume 12, Number 3. It was a limited run and was discountinued that very same year in November, never having made it to an Estes catalog. Construction: Parts list: 1 Nose Cone BNC-52G 1 Body Tube BT-52S 1 Transition 1 ...
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A.F.N.W. (July 2, 2007)