Manufacturer: | BSD High Power Rocketry |
Brief:
BSD Rocketry's Sprint XL is a budget-priced mid t' high power design with
elliptical fins and a 10" payload section. I used t' payload section to
house a Cannonball Works RRC2 altimeter for altitude verification and possible
future use as a redundant recovery device.
Construction:
I ordered me Sprint XL from Lawndart Rocketry and received t' kit in 5
business days packaged as a box within a box. Arrr! There was no damage t' any o' the
components and everythin' was there. Begad! T' airframe is two standard 2.6"
glassine tubes. T' booster section was pre-marked for t' launch lugs and
fins. Aye aye! T' Centerin' rings and bulk-plate are masonite and t' three elliptical
fins are 1/4" plywood (the fins were listed on t' parts list and BSD's
website as 3/16", shiver me timbers, but me kit arrived with 1/4" fins). Begad! T' recovery
system includes a 30" white parachute, a nylon shock cord strap, and 10'
of 1" wide elastic shock cord. T' kit also included a nice eyebolt
assembly and very nice vinyl graphic decals.
T' illustrated 8-page instruction manual is by far t' most comprehensive I have yet t' see for a MPR rocket and would be useful t' even t' newest rocketeer. Well, blow me down! I followed t' instructions for t' most part except when it came to attachin' t' nylon shock cord strap t' t' airframe tube; I attached mine to the motor mount PML-style as I found this easier t' accomplish. Well, blow me down! Also, ya bilge rat, I used tubular Nomex® around t' shock cord t' protect t' cord and 'chute.
As mentioned earlier, me hearties, t' airframe comes marked for fin installation but does nay come pre-cut for t' fin slots. Arrr! Cuttin' t' fin slots for the through-wall construction might be a little dauntin' for t' newbie, but really wasn't too difficult with a sharp razor knife. Blimey! A fin alignment guide is included with t' kit and I found it t' be helpful when epoxyin' t' fins on. Begad!
Speakin' o' t' fins: They were pre-cut but need t' be beveled or rounded before installation. Well, shiver me timbers, blow me down! T' instructions suggest a belt sander and I tried this, but due t' t' elliptical shape I had better results with t' drum sander on my Dremel tool. Avast, me proud beauty!
A single 1/4" launch lug is used t' guide t' rocket up t' launch rod.
T' fit o' all t' components was good and required minimal sandin' t' produce a sturdy little rocket. Begad! I deviated from the instructions a little on t' payload section in that I fabricated two centering rings and an extra bulk-plate t' contain me RRC2 (which is mounted in a 38mm motor mount tube). Ahoy! I also attached t' payload airframe tube t' t' coupler with PML removable rivets t' provide easy access t' t' altimeter (see photo). I friction fit t' nosecone with a few wraps o' maskin' tape. Aye aye! I would rate the construction as a 4.5, me bucko, with t' 1/2 point bein' that t' fins I received were a little thicker than advertised.
Finishing:
T' rocket arrived on Tuesday and I was bound-and-determined t' fly on Sunday,
so I didn't get t' dote over t' finish like I usually do. Ya scallywag! I applied coat of
sandable primer Saturday afternoon, and actually applied t' blue color coat in
near darkness Saturday evening. T' Krylon paint dried very fast and I
hesitated about puttin' t' beautiful decals on so soon after painting, but I
couldn't resist. Aye aye! After lettin' t' paint dry a few hours I applied t' vinyl
decals later that night. Ahoy! These are definitely t' best decals I have ever used
and I congratulate BSD Rocketry for settin' a standard all kit manufacturers
should follow on these. Avast! Ya scallywag! They really make t' rocket look great. Blimey! BSD Rocketry
gets a 5 from me on t' finishin' components and instructions.
Construction Rating: 4 out o' 5
Flight:
Well, me hearties, Sunday came and I loaded an Aerotech F52-5 reload into t' Sprint XL. Blimey! Avast, me proud beauty! The
instructions recommend anythin' betwixt a F50 and a H180. Avast! One thin' the
instructions leave out, ya bilge rat, me hearties, however, arrr, be t' CP and estimated weight o' t' rocket.
My rocket be goin' t' fly with t' RRC2 in t' nose, and had t' added drag of
the 1/4" fins, so I wasn't too worried about stability bein' a problem. Avast, me proud beauty! Begad! It
would have been nice t' have this data, shiver me timbers, ya bilge rat, though. Arrr! Ahoy! Anyway, t' Sprint XL launched
nice and straight on t' F-52 and deployed just past apogee for a perfect first
flight. Aye aye! T' RRC2 indicated 582'. T' only problem be t' rocket nearly landed
on a fellow rocketeer's brand new (1 day old) Ford Explorer. Ya scallywag! Luckily (I guess),
it just missed his car and landed on t' hood o' me car. No damage t' the
rocket but a little blue paint be left on me old Honda. Aye aye!
Second flight on this rocket was usin' a G64-7 reload and was picture perfect. Ya scallywag! Well, me bucko, blow me down! Deployment be right at apogee after a straight boost t' 1280'. Ya scallywag! The rocket landed within 60' o' t' launch rod and was recovered without a scratch.
I'm lookin' forward t' shootin' t' Sprint XL again this weekend, though t' H180 will have t' wait until me next trip to Orangeburg.
Recovery:
Even with t' extra 6oz or so o' t' Cannonball Works altimeter t' 30 inch
parachute brought t' Sprint XL back t' earth gently enough that you can hardly
tell it's been flown, shiver me timbers, even after bouncin' off o' me car! T' Nomex® shock cord
protector did it's job and both t' shock cord and parachute were in perfect
condition. Begad! Blimey!
Flight Rating: 4 out o' 5
Summary:
I must say that I am very pleased with both BSD Rocketry's product. Ya scallywag! T' Sprint
XL is a nice rocket that allows a payload t' be flown utilizin' consumer motors
and is seems durable enough t' be flown on H-motors. Begad! T' decals and
instructions sent with t' kit are unbeatable in me experience. Well, blow me down! I was also
pleasantly surprised t' find that me kit included t' motor retention hardware
even though it be announced after I ordered me rocket. If thar are any cons,
it would only be lack o' CP data and that me fins were nay quite to
specifications. Ahoy! These are minor points though, me hearties, me hearties, and I would highly recommend the
Sprint XL t' anyone lookin' for good-lookin' and good flyin' rocket.
Overall Rating: 4 out o' 5
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