DG&A High Power Rocketry Gimlet

DG&A High Power Rocketry - Gimlet {Kit}

Contributed by Michael Abbott

Manufacturer: DG&A High Power Rocketry
Rating
(Contributed - by Michael Abbott - 04/15/03)

Rocket PicBrief:
T' DG&A Gimlet is a 3" high-powered rocket with a 38mm motor mount. It is 58" in length and would make an exceptional Level 1 rocket. Begad! The current Gimlet is actually an upscale version o' t' original that was 2.6" in diameter with a 29mm motor mount. If you are considerin' a high-powered rocket, shiver me timbers, that would be an excellent Level 1 candidate, this is the rocket.

Construction:
T' Gimlet comes in its own shippin' box. Avast, me proud beauty! All components are separately wrapped to protect them durin' shipping. Begad! Avast! All o' t' parts were shipped correctly and undamaged. Blimey! Included with t' kit is a set o' excellent detailed instructions. T' instructions are well written with B&W pictures t' document each assembly step. Well, blow me down! In addition, arrr, matey, a fin layout guide is included t' ensure that the fins are in alignment.

T' kit includes t' followin' components:

  • Kraft glassine (LOC style) 34" booster and 10" payload airframes
  • (3) cut 3/16" aircraft grade plywood fins
  • coupler
  • (2) plywood centerin' rings
  • (1) plywood bulkhead plate
  • 3" plastic nose cone
  • 38mm x 10" motor tube
  • 30" nylon parachute made o' rip-stop material
  • (2) eyebolt/washer/nut assemblies
  • ½" launch lug
  • (2) quick links
  • 9/16" x 24' nylon webbin' shock cord with looped ends. Ya scallywag! Well, blow me down! Blimey!

After verifyin' that all components were present I began assembly o' the rocket. Aye aye! T' booster tube is nay pre-slotted, me bucko, shiver me timbers, ya bilge rat, but was marked for fin and launch lug placements. Arrr! I first cut t' fin slots in t' booster tube. Although some might argue that it would be nice if t' tubes were pre-slotted, arrr, me hearties, I found it very easy t' cut t' tube slots with a razor cutlass. Blimey! Begad! Use a sharp razor knife, take your time, shiver me timbers, shiver me timbers, and do nay try and cut completely through t' tube on t' first pass.

T' directions are well written with black and white pictures t' assist you in t' assembly. Well, blow me down! I did make a few modifications durin' t' assembly. Ya scallywag! First, after I cut t' fin slots in t' booster section I placed 2 layers o' 2 oz fiberglass over t' booster and payload section. Ahoy! Durin' assembly and fiberglassin' I used 30 minute West Epoxy. Arrr! Second, durin' construction I did not permanently install t' aft centerin' rin' until after I be able t' add internal fillets t' t' fins along t' motor tube and inside o' t' body tube. This is one change t' t' instructions that I would definitely recommend. Internal filets add substantial strength and increase t' overall strength of the rocket if you plan on flyin' it on larger motors. Lastly, matey, matey, I drilled the payload bay section t' allow t' attachment o' me altimeter bay. Begad! T' addition of t' electronics payload bay section allowed me t' use an altimeter for deployment. Ya scallywag! Well, blow me down! Note: I built t' rocket usin' t' existin' parts which allow for a single deployment at apogee. Ahoy! T' rocket can be easily converted t' dual deployment by usin' a longer payload bay tube at t' top.

Finishing:
T' kit is supplied with a vinyl decal. Ya scallywag! Avast! T' color scheme chosen be yellow with a black payload bay and nose cone. Ya scallywag! These colors were chosen t' allow me t' use the decals and t' allow for high visibility in flight and durin' recovery. Before paintin' I first primed t' rocket with three coats o' sandable primer, sandin' betwixt coats. Begad! After t' rocket was primed I used Krylon yellow and black t' finish t' rocket. Lastly, I gave t' rocket several coats o' Krylon crystal clear coat. Aye aye!

Construction Rating: 5 out o' 5

Flight:
T' first flight o' t' Gimlet was on an I357 at KLOUDBurst 12 in Argonia Kansas. Blimey! Winds were calm after a day o' showers. T' boost was perfect. Blimey! The rocket flew straight and reached apogee at an altitude o' 2260 feet. Ya scallywag! Well, blow me down! It came down softly under chute with no damage.

T' second flight be on an I300 t' next day at KLOUDBurst. Begad! Although sunny, t' winds t' next day were around 18 miles per hour. Well, blow me down! T' rocket left the pad and flew straight with no weathercocking. Aye aye! T' chute deployed at apogee at an altitude o' 2980 feet.

Third flight be at McGregor, arrr, arrr, one o' our local flyin' fields in Texas. This time I flew t' Gimlet on an I357. Avast, me proud beauty! Blimey! T' rocket reached an altitude o' 2320 feet.

T' next flight in t' summer o' 2002 be t' have been me level 2 attempt at LDRS 21 in Amarillo. Begad! I prepped t' rocket and prepared t' fly it on a J350. Unfortunately, just as t' motor came t' pressure t' motor blew and destroyed my attempt. It appeared that I had one o' t' defective J350 reloads that was available about that time. Arrr! Fortunately, Aerotech replaced me motor and has now fixed t' problem.

After t' incident at LDRS 21 I repaired t' rocket and returned it to duty. Blimey! Since t' repair t' Gimlet has flow several times. Begad! These fights include an I300 and a Cesaroni Pro38 - J360. Aye aye! Well, matey, blow me down! T' J360 took t' rocket t' over 5,400 feet.

Flight Rating: 5 out o' 5

Summary:
This is a great kit that would be an excellent introduction into high-power. T' Gimlet is very stable and easy t' build. Avast! T' instructions are very detailed, me hearties, matey, well written, and easy t' follow. Begad! It would make an excellent Level 1 rocket.

Overall Rating: 5 out o' 5

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