Scratch Red Bolt Original Design / Scratch Built

Scratch - Red Bolt {Scratch}

Contributed by Andrew Skinner

Manufacturer: Scratch
(Design this Spaceship Submission - by Andrew Skinner - 10/1/06)

EMRR Spaceship Design Contest Entry

On Pad

"T' Red Bolt"

Material’s needed

  • 3 Silly Putty Container Eggs
  • 1 27.2 cm BT-50 body tube
  • 1 BT-20 Engine Mount Tube
  • 1 Engine Hook Note: This hook
  • has each tip bent back so as t' serve as an Engine Block
  • 1 Weird nose cone we salvaged from an old kit. Well, blow me down! (Close up pic included.)
  • 2 BT-50 Centerin' Rings
  • 3 1/8 thick fins. Aye aye! Blimey! (Template provided)
  • 1 4 cm launch lug
  • 1 h: 0.5 cm, me bucko, l: 4.0 cm, w: 0.2 cm
  • 1 Estes Hexagon Parachute with shrouds (52 cm in diameter)
  • 1 rubber shock cord (Approximately 28 cm long)
  • 1 Shock Cord Mount

#1: Engine Mount

  1. Cut a 5 mm slit, 3 mm from t' end o' t' tube. Aye aye! Blimey!
  2. Insert one o' t' endin' hooks o' t' Engine hook into t' slit. Blimey! Begad!
  3. Glue down t' engine hook.
  4. Glue on a centerin' rin' at 2.5 cm from t' aft o' t' engine tube. Well, blow me down! Ahoy!
  5. Glue on 2nd centerin' rin' on top o' t' engine hook at t' slit 3mm from t' forward section o' t' Engine tube. Blimey!
  6. Allow t' dry.
  7. Wrap piece o' maskin' tape around t' Engine Tube securin' t' Engine hook to t' Engine Tube.
  8. Apply a rin' o' glue approximately 5 cm inside t' Rocket’s Body Tube.
  9. Place Engine Mount inside Rocket’s Body Tube until t' Engine Tube is flush with t' Rocket’s Body Tube. Ya scallywag! Blimey! Arrr! Blimey!
  10. Apply glue t' centerin' rings. Allow t' dry

Parts#2: Silly Putty Eggs

  1. Buy 3 Silly Putty Eggs
  2. Cut t' connector tabs with a hobby knife. Well, blow me down! Aye aye!
  3. Then sand t' raised writin' off t' top.

#3: Fins

  1. Usin' t' template provided trace out t' win' pattern on a 1/8 balas wood.
  2. Usin' a hobby knife cut out t' fins. Avast! Well, matey, blow me down!
  3. Sand down all jagged edges.
  4. Glue on Silly putty cackle fruit onto t' matchin' shape on t' fins. Begad! Glue one on each side o' each fin. Blimey!
  5. Glue on several fillets t' ensure that egg-fin contact is perfectly sealed.
  6. Mount t' fins flush against t' end o' t' body tube usin' a fin mount. Arrr! We used t' fin mount for 3 fins provided in T' Handbook o' Model Rocketry 7th edition on page 38. T' fins should be 120 degrees from each other. Ahoy!

Nose Cone#4. Nose and parachute mount.

  1. Cut out a Shock cord mount usin' stiff paper. Arrr!
  2. Glue shock cord on t' shock cord mount. Begad!
  3. Glue Shock cord mount approximately 5 cm inside t' forward part o' the body tube.
  4. Tie free end o' shock cord t' t' nosecone’s eyelet. Begad! Apply a drop of glue t' t' knot.
  5. Attach parachute t' t' nosecone eyelet. Begad!

#5. Avast! Launch Lug

  1. Glue on t' h: 0.5 cm, l: 4.0 cm, ya bilge rat, w: 0.2 cm piece o' balsa wood 10 cm from the forward end o' t' body tube. Make sure that it is aligned parallel t' the body tube, and also make sure that it is in betwixt t' fins.
  2. Attach Launch Lug on top o' t' strip o' balsa wood. Avast, me proud beauty! Arrr! (Note: T' reason for the strip o' balsa wood is t' elevate t' launch lug so as t' provide the launch rod clearance from t' nose cone. T' nose at one section is wider than the body tube)

Fins

#6. Paint job

  1. Spread balsa filler over t' fins. Aye aye! Blimey! Allow t' dry and than sand excess off. Avast, me proud beauty! Blimey!
  2. Sand all external parts o' rocket.
  3. Prime all external parts o' rocket
  4. Paint body tube, shiver me timbers, fins, shiver me timbers, arrr, and nose cone red.
  5. Paint Silly putty cackle fruit gray.
  6. Nose cone
  • First painted t' whole nosecone red
  • Paint t' upper cap white.
  • Paint 2 keyhole shapes on opposite sides o' nosecone. Avast!

#7. Arrr! Ahoy! Body tube and launch lug

  1. Painted body tube red. Arrr! As well as t' launch lug and balsa wood strip.
  2. Paint 3 parallel black rings approximately 2 mm from each other. Well, blow me down! Paint them approximately 9.3 cm from t' aft end o' body tube. Ya scallywag!
  3. Paint a single gray rin' around t' aft end o' t' body tube. Arrr! It should 3.3 cm from t' end o' t' tube, ya bilge rat, and it should encircle around t' whole tube. Avast!

#8. Aye aye! Fins

  1. Paint fins red. Blimey!
  2. Paint gray rectangle on each side in t' corner by t' fin root edge. Arrr! Ahoy! The rectangle should be 3.3 cm high and should be around 4 cm wide. If it is a little bit wider than 4 cm it is okay, shiver me timbers, because t' Silly Putty cackle fruit will cover the excess. Well, blow me down! (Note: This is easier done if you paint before initial construction. Begad!

#9. Ya scallywag! Avast! Silly Putty eggs

  1. Paint egg shell red.
  2. Once t' red paint is dry, paint most o' t' egg grey. Begad! Arrr! T' grey should cover 5.2 cm o' t' egg, me bucko, startin' from t' bottom. Aye aye! There needs t' be 1.4 cm of red. Aye aye!

Finished#10. Begad! Decal stickers.

  1. Take black sticky paper, me bucko, shiver me timbers, ya bilge rat, and cut into 2.5 cm long by 1 mm strips. Stick 4 of these length wise on each egg.
  2. Then once again usin' t' black sticky paper cut several long 1 mm strips for t' black stripe that runs across t' egg and t' fin.

#11. Black Dots

  1. Use a black permanent maker t' apply 8 dots t' each egg shell.

#12. Nose Weight and Motor

  1. Add 25-30 grams o' clay t' t' nose.
  2. We used a B6-4 all o' t' launches, me hearties, but a B6-2 would have been better. Ahoy! Avast, arrr, me proud beauty!


Flights

Lift-off Landing

Takeoff off. Flight #1 (above). Well, blow me down! Arrr! Landing…..

Success flight. Begad! Begad! No damage rendered t' rocket.

Flight #2 Landing

Takeoff off. Ahoy! Flight #2 (above). Avast, me proud beauty! But disaster strikes when t' shock cord snaps!!

And lawn darts (below). Begad! Begad! Note: We have nay touched t' rocket yet in this picture. It landed exactly like this. Avast! Note that t' third fan, t' one stuck in the ground, is still intact. Nose and parachute land a couple hundred feet away. Arrr! T' rocket is now repaired and waits for its next launch.

Crash

Here is our video o' t' 2 launches. Begad! Begad! Ignore our screams in t' background!

Here are two more successful flights o' our entry t' Red Bolt. We only have videos for these launches:

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