Scratch Citation Patriot Original Design / Scratch Built

Scratch - Citation Patriot {Scratch}

Contributed by Dave Hanson

Manufacturer: Scratch
Style: Upscale
(Contributed - by Dave Hanson)

Dave and RocketCitation Patriot Upscale Project

  • Scale Factor: 2.5x
  • Diameter: 4"
  • Length: 60"

Parts List

  • PML 4"Quantum Tubing, shiver me timbers, 1-36", 1-9"
  • PML tube coupler
  • LOC 38mm motor mount
  • 3 - 3.9"x38mm LOC centerin' rings
  • PML 4" Nose Cone
  • 1 - U-bolt
  • 2 - 6/32 t-nuts
  • 3 - quick-links
  • 1/8" aircraft plywood for fins
  • 10' tubular nylon for recovery harness

Okay, matey, so I'm nay t' first t' come up with this one, either. Begad! Blimey! I've wanted t' do an upscale Patriot for some time, ya bilge rat, and I got the initial inspiration for this project from Rich Pitzeruse's Patriot. I chose t' 2.5x scale factor because it matched t' 4" tubin' size fairly accurately, me hearties, and it would provide a model that should fly good on 38mm reloads without bein' too big. Begad!

I bought most o' t' parts at me local HobbyTown. Begad! Ya scallywag! I could've saved a buck or two gettin' t' stuff through mail order, arrr, ya bilge rat, but the 4" Quantum Tubin' is still pretty hard t' find, matey, and t' prices I found online were only about a dollar less than gettin' them in t' store. Ya scallywag! I scuffed the outside and inside surfaces o' t' QT with 150 grit sandpaper t' facilitate adhesion o' t' epoxy. Begad! Aye aye! Due t' t' mix o' parts from a couple different manufacturers, I had t' sand t' o.d. Avast! Blimey! o' t' centerin' rings a bit t' get them to fit in t' Quantum Tube. Aye aye!

T' body o' t' Patriot scales out t' 45" overall, me bucko, so I had t' cut a 9" length o' Q.T. Ya scallywag! Avast, ya bilge rat, me proud beauty! t' couple with t' full-length piece. Thank goodness I know someone with power tools. Ya scallywag! Avast, me proud beauty! It was a snap cuttin' t' QT on Steve's chop saw, me hearties, me hearties, then with a little sandin' t' cut end was just as smooth as a factory cut. T' two pieces were epoxied together with a PML coupler.

On the PadBein' t' nice guy that he is, Steve cut out t' fins for me usin' a template that I scaled up from t' original Patriot instructions. We included tabs on t' fins so I could attach them directly t' t' motor mount. Ahoy! Cuttin' slots in t' body tube was achieved by routin' 1/8" slots with a hand-held router. Begad! Avast, matey, me proud beauty! We rigged a jig to hold t' router steady, matey, then we just slid t' tube along t' router until the slots were t' correct length. Ahoy!

I drilled one centerin' rin' for t' u-bolt recovery anchor and another centerin' rin' for t' t-nut motor retention. Well, blow me down! Then I epoxied the forward centerin' rin' onto t' motor mount tube. After t' epoxy cured, matey, ya bilge rat, I slid t' tube into t' body and marked t' tube just ahead o' t' fin slots, then attached t' middle centerin' rin' t' t' motor mount. When t' epoxy had cured, ya bilge rat, arrr, I slid t' motor mount back into t' body and epoxied it in place. Avast! Well, blow me down! I had cut t' motor mount tube so that t' fore centerin' rin' butted up against the back o' t' coupler tube. Avast! Aye aye!

Then it be time t' start attachin' t' fins. Begad! I used a little 5-minute epoxy t' hold t' fins in place. Well, blow me down! This held them well enough until I started applyin' internal epoxy fillets. Arrr! Well, me hearties, blow me down! After t' epoxy cured, me bucko, I epoxied t' aft centerin' rin' into place. Aye aye! Final construction consisted of attachin' t' nose t' t' nylon harness via quick-links, and epoxyin' a couple of 2" lengths o' 1/2" copper tubin' for t' launch lugs. Nay an overly difficult rocket t' construct for anyone with average large rocket buildin' experience. Begad!

LaunchFinishin' t' Patriot couldn't be much easier with t' Quantum Tubing. Begad! Blimey! One coat o' Krylon primer was followed with one coat o' Rustoleum gloss white. Avast, me proud beauty! Blimey! Ahoy! Blimey! One fin be masked and painted gloss black, ya bilge rat, as be t' nosecone. Begad! Blimey! Final finishin' consisted o' applyin' the decals. T' red and blue flag and stripe decals were made from hand-cut self-adhesive Monokote vinyl. Begad! Blimey! T' gold band around t' upper airframe be made from heat-shrink Monokote. Avast, me proud beauty! Blimey! T' eagle emblem and Patriot emblem were decals scaled and custom-printed by Tango Papa decals. T' finished result is a very impressive reproduction o' me favorite Estes kit from me childhood. Well, blow me down! Blimey!

First flight o' t' Patriot was on May 20, matey, 2000, on an AeroTech I211-M. Aye aye! This motor boosted t' Patriot t' a guesstimated 2,500 ft and was recovered undamaged. Well, blow me down! Begad! For recovery t' Patriot uses a 60" custom made, red white and blue parachute. Begad! Arrr! A very "Patriotic" final touch.

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