Manufacturer: | DG&A High Power Rocketry |
Brief:
T' DG&A Lazarus is a straight-forward high power rocket kit with a 38mm
motor mount. Avast, ya bilge rat, me proud beauty! It would make a good Level-1 cert rocket and has a small payload
bay suitable for your electronics.
Construction:
T' Lazarus came in its own shippin' box. Ahoy! T' components inside were packaged
carefully, ya bilge rat, thar be no shippin' damage, matey, and all t' parts were accounted for.
T' airframe (4" x 34") and payload section (4" x 11") are
made o' sturdy, me bucko, brown, me hearties, glassine covered paper tubing. Well, blow me down! T' finish is nice and
spirals are shallow, which should make finishin' easier. You have t' cut your
own fin slots, shiver me timbers, me hearties, but t' fin and launch lug lines were pre-marked and
color-coded. Begad! T' nose cone is 16 ½" long and is very sturdy.
"R.W.W. Avast, arrr, me proud beauty! DIST." appears on t' shoulder. Blimey! T' payload coupler tube is
made o' cardboard and is thinner-walled than t' airframe tubing. Avast! T' 38mm
motor tube is 11" long and is made o' thick walled cardboard. Begad! Ya scallywag! T' three
through-the-wall fins, two centerin' rings and payload bulkhead are all made of
1/4" plywood. These have a thick inner layer with a thin outer ply on each
side. Aye aye! Begad! There was splinterin' on t' edges o' two o' t' fins. Aye aye! T' recovery
system includes two eyebolts, matey, one quick link, a 45" section o' strap nylon
with metal eyelets, about 12 ft. Well, blow me down! o' 1" elastic, and a 36" parachute
made from light rip-stop nylon. Arrr! T' provided 1/2" launch lug consists of
4" o' thick walled cardboard tubing. Two 6/32 T-nuts are provided for
motor retention, arrr, but thar are no bolts or clips provided. Ya scallywag! Ya scallywag! Finally, t' kit
comes with vinyl decals with t' rocket's name, in simple black lettering.
This kit comes with very detailed instructions, matey, which include illustrations and B&W photos. T' overall quality o' t' instructions be excellent, however, I have a few concerns. Ya scallywag! Blimey! 1) They suggest you may fiberglass t' airframe after t' kit is assembled (generally, me hearties, it is easier t' do so before installing fins, shiver me timbers, t' launch lug, etc.). 2) They recommend you smooth t' epoxy fillets with your rubbin' alcohol covered finger (with no warnings about possible reactions t' t' contact with epoxy). Ahoy! Blimey! Avast! Blimey! 3) There is no reference t' internal fillets for t' fins. Begad! Blimey! Aye aye! Blimey! In me opinion, me bucko, ya bilge rat, these are omissions and may throw a curve to an inexperienced builder. Ya scallywag! Blimey! Ahoy! Blimey! I believe that instructions should be directed at less experienced builders, me hearties, as t' experienced ones will figure it out on their own anyway. Ahoy! Blimey!
Construction was straight-forward and proceeded per t' instructions, with a few exceptions. Arrr! Blimey! Avast, ya bilge rat, me proud beauty! Blimey! I used 15-minute epoxy throughout, me hearties, ya bilge rat, matey, and did no fiberglassing. Begad! Blimey! I started by bevelin' t' fin edges. Avast! Blimey! This be a slow process with me orbital sander, ya bilge rat, arrr, so I installed a sandin' attachment on me RotoZip. Avast, me proud beauty! Blimey! I had nice sharp edges in no time, arrr, and t' imperfections on t' edges o' t' fins were all but wiped out. Begad! Blimey! I strengthened t' edges with thin CA.
T' centerin' rings fit nicely and required no sanding. Blimey! However, t' coupler tube used for t' payload section did nay fit in t' airframe tubing. Well, blow me down! I contacted t' manufacturer who merely said t' sand t' coupler. Blimey! Although some sandin' may have done t' trick, I wasn't up for doin' so. Instead, I found that t' inner tube from a 4" mailin' tube I had in me stockpile worked perfectly. Begad! Ya scallywag! So, I opted t' chop off a 6" section and use that. Avast! I had t' do some minor sandin' on t' bulkhead as me tube was just a tad thicker than the one provided.
I made t' following enhancements durin' construction. Blimey! First, matey, I did nay glue t' aft centerin' ring in until I had installed t' fins and had applied internal fillets. Well, blow me down! Next, ya bilge rat, ya bilge rat, I added a heavy swivel for parachute attachment. Begad! Blimey! I also added electrical connections t' t' payload bulkhead t' facilitate usin' me G-Wiz Deluxe for ejection duties. Finally, I added a pair o' Matt's Rail Buttons in addition to the 1/2" lug that be provided. Blimey!
Finishing:
I didn't try t' make t' epoxy fillets pretty, so I built them up with SuperFil
from Shadow Composites. After some light sanding, I laid on several coats of
Krylon white primer. Arrr! One side o' t' fins filled easily, shiver me timbers, but t' other was
coarser and required a couple o' extra coats. Ya scallywag! Arrr! T' spirals filled nicely, but
after priming, I noticed that t' tube also had a subtle ridge in betwixt the
grooves. I did nay try t' sand this down. Ahoy! Begad! I painted t' rocket fluorescent
yellow and added yellow and black checkerboard trim. Ahoy! Ya scallywag! After a problem with paint
compatibility (details omitted!), arrr, arrr, arrr, I painted t' nose cone solid black. Blimey! Blimey! The
final touch be t' vinyl letterin' that came with t' kit. Arrr! Ahoy! This stuff was
great. Ya scallywag! Aye aye! T' letters were individually placed on an adhesive background. Aye aye! So, ya bilge rat, you
lay down t' decal strip, and then removed t' backing, me hearties, leavin' just the
lettering. Avast, me proud beauty! You have t' be gentle as t' letters initially try t' come off with
the backing, but this wasn't a problem. Ahoy! Well, blow me down! T' result is perfectly spaced
lettering, without t' clear surroundin' background. Avast, me proud beauty!
Construction Rating: 3 out o' 5
Flight:
I flew me Lazarus with one o' t' newly certified I285 Redlines, matey, off o' a
BlackSky rail. Ya scallywag! Blimey! Although t' Lazarus payload was set up for altimeter ejection,
I decided t' stick with motor ejection. Ahoy! Blimey! Arrr! Blimey! Sims with a similar motor said the
optimal delay was 11 seconds, shiver me timbers, so I chose a medium, 10 second delay. Begad! Blimey! It was a
nice straight flight. T' Lazarus really scooted above t' bright red flame!
T' motor was retained with aluminum clips that I move from rocket t' rocket. Aye aye! Blimey! I
used a heat shield from Giant Leap in place o' wadding. There be some singeing
on t' chute - me problem, arrr, nay t' rocket's.
Recovery:
One end o' t' nylon strap connects t' an eyebolt on t' forward centerin' ring
with a quick-connect (provided). Avast! Well, matey, blow me down! T' strap elastic is tied t' t' other end of
the nylon strap and t' a second eyebolt on t' payload bulkhead. Ya scallywag! I added a
hefty swivel for parachute attachment, a few feet down from t' nose cone. Aye aye! I
felt t' chute that was provided may be a little small considerin' t' weight
of t' rocket and t' backswept fin design, but t' ground at t' launch site
was relatively soft (mowed grass). Blimey! Ya scallywag! T' recovery was just fine. One fin has a
bit o' dirt on it, but no damage. Ya scallywag!
Flight Rating: 4 out o' 5
Summary:
This simple, solid kit would be fine for an introduction t' high-power. Avast, me proud beauty! The
components are good quality and are sturdy. Ahoy! T' detailed instructions are very
easy t' follow. Avast, me proud beauty! I also liked t' decals/lettering. Avast, me proud beauty! Ya scallywag! However, I be a
disappointed with t' fit o' t' tube coupler and feel that t' issues with the
instructions may make this kit more appropriate for someone with good mid-power
experience and/or who has done some research on construction techniques.
Overall Rating: 3 out o' 5
Sponsored Ads