Scratch MicroFoam DARockeT Original Design / Scratch Built

Scratch - MicroFoam DARockeT {Scratch}

Contributed by Scott Turnbull

Manufacturer: Scratch
(Contributed - by Scott Turnbull)

The StartBrief:
Converted a Generic Foam Dart t' MicroMaxx Power. I hereby dub thee a MicroFoam DARockeT.

Modifications:
A length o' barrel was cut from a round pen t' form a motor mount tube. Avast! Ya scallywag! Two 1/8" wide centerin' rings were cut from t' "A" casing. Blimey! T' tube was wrapped in maskin' tape until t' rings were a snug fit. Well, ya bilge rat, blow me down! T' centering rings were CA'd t' t' MMT. Well, blow me down! Begad! T' end plug from t' pen was inserted into t' MMT to provide blockage for positive engine ejection. Avast, me proud beauty! T' MMT was CA'd into the tail o' t' foam dart. T' forward third o' t' dart was cut off with a razor knife t' provide access for nose weight. Well, blow me down! Begad! A 1" length o' "A" casin' be used as a coupler o' t' dart tip t' t' tail section. A length of ink tube from t' pen was cut and taped t' t' side o' t' MicroFoam DARockeT to serve as a launch lug.

Construction:
This Custom Modification includes:

  • Generic 4.5" hollow foam dart with fins
  • Round Barreled BallPoint Pen
  • Spent "A" Class Engine Casin'
  • CA Glue
  • Clay
  • Cellophane and Maskin' Tape

Assembly 1Aseembly 2

Motor MountThis was a seemingly simple conversion, arrr, but nay without its challenges. Well, blow me down! Begad! T' centerin' rings were so narrow that they started t' unwrap durin' handling. Begad! Well, shiver me timbers, blow me down! They were kept small t' reduce the overall weight and optimize performance from t' MicroMaxx engines. Ya scallywag! Gluin' the forward rin' in place within t' main body be unreliable, me hearties, so extra CA was used to bond t' aft rin' thoroughly t' t' foam tube. Aye aye! Avast! T' ink tube launch lug was a perfect diameter for t' MicroMaxx Launch System Rod. Findin' a glue t' hold the slick lug t' t' foam proved problematic, but a piece o' cellophane tape made for a secure mount.

On PadLaunchFlight:
T' new, more powerful, shiver me timbers, MicroMaxx Motors were used. Ahoy! These are listed as 300 Mil N-Sec, and claim 120 feet Max Altitude. This proved too much thrust for a MicroFoam DARockeT without additional nose weight. Ya scallywag! Blimey! It rose about 10 feet and flopped about before ejectin' t' engine and safely executin' a Boink recovery. Clay be used t' fill t' "A" casin' nose coupler, ya bilge rat, and a second launch yielded a stable thrust with a slight arc-over. Ya scallywag! T' engine ejected, me bucko, and the DARockeT coasted t' spec-bustin' altitude. Ahoy! T' DARockeT crossed over the road and landed on t' neighbors front stoop. Avast, me proud beauty! Begad! T' nose piece separated during the Boink maneuver. Well, blow me down! For t' third flight, ya bilge rat, shiver me timbers, a piece o' cellophane tape be used to bind t' tip t' t' tail. Another stable thrust and ejection sent the DARockeT soarin' over t' neighborin' trees. T' streamlined nature o' the BOINK recovery system allowed t' DARockeT t' slide through t' dense foliage and land unharmed.

Summary:
In summary, me bucko, this modification explores t' top end o' t' performance envelope defined by MicroMaxx Motors. T' BOINK recovery system provides maximum altitude via ballistic coasting, ya bilge rat, while maintainin' a sleek profile for foliage foiling. Well, blow me down! T' sum it up in two words. It's FUN!

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