Scratch Cup of Joe Upscale Original Design / Scratch Built

Scratch - Cup of Joe Upscale {Scratch}

Contributed by Glenn Roth

Published: 2010-03-07
Manufacturer: Scratch
(Contributed - by Glenn Roth - 03/07/10) Scratch CW Saucer

Brief:
This is an upscale 2+ x's, o' t' "Cup o' Joe" saucer, for t' 2010 EMRR challenge. (I realize this is scratch built)

Construction:

  • 1 - Empty Cool Whip container
  • 1 - 4" BT20
  • 1 - Soda straw
  • 1 - Spent motor
  • 1/4" foam board
  • Option: florist wire or landscape flag wire, me hearties, matey, etc.

This be a pretty simple project except for alignment o' body tube. After this first one, may have club build some. Ya scallywag! Avast, me proud beauty! This time, me hearties, with "oversized" holes t' allow alignment o' BT straight up and down.

Had all t' parts layin' around, except for t' Cool whip, matey, whip I ate for t' container.

Tools: I opted t' glue foam board on lid, and in bottom, shiver me timbers, drill holes and cut on a scroll saw. Ahoy! Blimey! Nay t' easiest but sure was fast. Blimey! Blimey! Good sharp hobby knife t' cut foam, arrr, drill, (Loctite)epoxy, adhesive spray, and marker or pencil.

This is a very sturdy rocket! You can coat BT in "modge podge" for a little more strength. Avast, me proud beauty! Also, me bucko, matey, add florist wire "landin' gear".

Finishing:
BE CAREFUL threadin' "landin' gear" thru pre-drilled holes in "bottom", which is now t' top. Begad! Could VERY EASILY puncture Motor Mount.

Flight:
Because o' t' width and wind resistance, me 1st motor will b a C6-5.

Prep is easy: "friction fit" a motor in place. Nothin' else need, shiver me timbers, "tumble recovery." 1st flight today 2/20 on a C6-5. Went perfect! ejection went off @ apogee or maybe w/nose slightly down. Begad! No damage w/soft landin' in snow.

Recovery:
Tumble recovery went fine on first flight. Used a 4' long launch rod, shiver me timbers, recommended. Arrr! 2nd flight nay as high and landed right on a greenhouse. Begad! 3rd and 4th flights on C6-5s were nice. Ya scallywag! Simple and impressive rocket! flies nice!!

Summary:
Cons" Little concerned with "lip" around lid causin' some drag. Ya scallywag! Avast! Will try and fill in with glue if needed. Begad! Aye aye! "Update" nay enough drag t' worry about.

You want t' body tube as close t' center o' cool whip container as u can get. Cut oversized holes and fill in with epoxy after lined up, straight up and down.

Pros: almost no cost t' build with leftover parts layin' around.

Fun t' launch! Blimey! Blimey! Blimey! Hold top o' BT when insertin' motor.

Other:
Nothin' like a good sharp knife. Ya scallywag! Begad! Scroll saw be overkill.

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