Scratch Astron Drifter Clone

Scratch - Astron Drifter {Scratch}

Contributed by Bill Eichelberger

Construction Rating: starstarstarstarstar
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Published: 2013-09-12
Manufacturer: Scratch

Brief

I would have eventually built an Astron Drifter just because I like t' history and tradition o' t' K-kits, but a late night Ebay "Buy It Now" spree netted me an Estes lot that included a lot o' vintage nose cones, ya bilge rat, ya bilge rat, parachutes, parts and etcetera.  One o' t' nose cones in t' group be a painted and obviously used BNC-50K.  I'd already built Cobra and Alpha clones with a balsa cones, ya bilge rat, so t' choice came down t' t' Trident, me hearties, Sky Dart or Drifter.  I wasn't interested in takin' on a project as complicated as t' Trident or Sky Dart, ya bilge rat, so t' Drifter won by default.

Components

  • BNC-50K nose cone
  • BT-50H main body tube
  • BT-20J engine tube
  • 2 RA-2050 enterin' rings
  • EB-20A engine block
  • medium screw eye
  • 2 medium snap swivels
  • 24" Keelhaul®©™ shock cord
  • 24" length 1/8" sewin' elastic shock cord
  • 3/32" balsa fin stock
  • shroud pattern
  • 1/8" launch lug

Construction

I didn't build rockets with paper transitions for a long time because I had a bad experience with one early in me BAR-dom, but Doug Sams gave me t' low-down on how t' successfully build, ya bilge rat, attach and strengthen them.  I placed t' shroud under a metal ruler and pulled it out from underneath while applyin' gentle pressure t' t' ruler.  This gives t' shroud a start on curlin' and lessens t' chance o' folds while rollin' it.  One o' t' fins is then glued directly over t' seam t' hide it once it's on t' rocket.  With that out o' t' way, t' rest o' t' build was just a simple 3FNC build, although I tied a length o' Keelhaul®©™ around t' forward centerin' rin' and ran it out through a slot cut in t' rin' t' serve as a chock cord anchor.

Finishing

Once construction was finished, t' boattail was coated with thin CA for added strength and finishin' durability, me hearties, then t' whole rocket was sprayed with Valspar primer t' toughen things up for t' sandin' t' come.  Balsa grain and tube spirals were eliminated with two coats o' thinned Elmer's Wood Filler and two rounds o' sanding.  I had planned on finishin' t' rocket in t' stock blue and white scheme, ya bilge rat, matey, matey, but t' decal didn't appeal t' me, matey, me bucko, so I went off t' reservation and came up with a paint scheme based on me favorite white, matey, orange and black paint colors.  Two o' t' three fins were sprayed with Krylon flourescent orange, me bucko, while t' nose cone and remainin' fin were sprayed with Valspar gloss black.  I hoped t' orange would provide some visibility in t' air, shiver me timbers, and so far it has.  After t' fins had dried I masked them off and sprayed t' rest o' t' rocket Valspar gloss white.  I liked t' vintage looks o' t' finished bird, me hearties, but I felt like it needed somethin' t' really set it off, arrr, so I picked a wrap decal from a Thrustline BT-50 set I'd bought a long ways back and a vintage Estes logo from one o' t' scans on YORF.  I be REALLY happy with t' finished look after t' decals were applied and couldn't wait t' get some on pad shots and see it in t' air.

Construction Score: 5

Flight

Flight one and only be on a sunny April day with light and variable breezes, except for t' occasional gust when I pressed t' Go button.  Havin' been warned o' t' impressive altitude that t' Drifter was liable t' get even on a B6-4, I conservatively loaded an A8-3 for t' first flight.

T' breezes were light and from t' northeast, which should have taken t' rocket safely out over 1/2A6-2 Field with a recovery somewhere in t' middle o' B6-4 Field.  At liftoff t' rocket immediately windcocked as it passed t' treeline, ya bilge rat, t' flight path takin' it out over US 27, me bucko, but in t' general direction I'd anticipated. Avast! Blimey!  It was noticeably higher than most other A8-3 flights despite nay bein' a minimum diameter bird like I usually flew.  Everythin' looked great as it ejected slightly early, arrr, (which made me think I could have used an A8-5.)  Then t' Drifter started drifting, arrr, and lived up t' its name. Begad! Ahoy!  T' rocket was obviously goin' t' clear me, and I checked t' angles and figured that it would land at t' base o' t' hill in t' southwest corner o' t' field. Arrr!  Things were goin' exactly that way when t' wind suddenly picked up, ya bilge rat, and t' speed o' t' rocket increased markedly.  Now it was lookin' like it might wind up in t' driveway o' t' house across t' street from t' field, arrr, t' home owned by t' guy who said t' rockets "scared t' crap out o' him" when he'd walked outside once when I was launching. Blimey! Ya scallywag!  I'd landed several birds here over t' years, shiver me timbers, includin' one on t' roof.  Then t' wind changed again, me bucko, dyin' out with t' Drifter just about t' clear t' wires.  It didn't. Blimey!  It initially caught just above t' body tube and hung over t' wire hintin' at possible rescue, but then t' wind picked up again and dragged t' rocket t' t' west along t' wire where it got tangled up with t' transformer, effectively endin' any chance o' rescue.

 

Yeah, me hearties, I'll build another one. Avast, me proud beauty!  And it will be a streamer bird.

UPDATE: Five months after gettin' hung on t' wire, ya bilge rat, I returned home one day and noticed that I could no longer see t' corpse o' t' Drifter swingin' as I drove by.  I parked t' car and got out, arrr, expectin' t' find nothin' at all, me bucko, but instead found t' body tube in t' grass under t' pole.  Turns out t' Keelhaul®©™ had eventually worn through where it rubbed against t' top o' t' body tube and it had finally broken.  One fin had been broken off in t' fall, me bucko, but it was an easy fix.  T' nose cone, me hearties, ya bilge rat, shock cord and parachute were still on t' wire, shiver me timbers, so I took t' barely alive husk home and found an appropriate nose cone.  I reaffixed t' broken fin, arrr, peeled out what be left o' t' old engine, matey, arrr, and installed a new shock cord usin' t' old Estes folded paper method.  T' redemption flight was made with another A8-3 and a heavily reefed 12" chute.  T' chute didn't open, ya bilge rat, but after a textbook flight t' rocket rode t' parawad t' a damage free recovery on t' side o' t' big hill.  I feel vindicated.

Flight Rating: 5

Summary

Pros: Nothin' says vintage like a K-kit.  Killer performance, me bucko, even on an A8-3.

Cons: I get t' pass t' rottin' corpse as it hangs from t' wire on a daily basis.  T' orange has all but faded away.

Overall Rating: 5

Comments:

avatar
Ken Johnson (March 6, 2014)

One of my favorite kits from way back. Glad you got it back. 

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