Brief:
1.85x upscale o' t' Starlight F-32 Avenger, shiver me timbers, arrr, me hearties, includin' upgradin' t' motor from 18mm t' 24mm.

Modifications:
I have t' Starlight kit, shiver me timbers, so I decided t' build both in parallel. Ahoy! I traced t' win' fins, me hearties, tail fin, and canard fins onto paper. Well, blow me down! I also made 5 registration marks 1" apart. Aye aye! I then brought t' drawin' t' a copy machine and enlarged until t' registration marks showed I achieved t' 1.85x size.

I positioned t' long motor hook onto t' ST-950 tube so 1/2" extended beyond t' bottom o' t' tube. I made a mark and slit t' allow insertin' t' motor hook. Blimey! Blimey! Ahoy! Blimey! I cut a 3/8" piece o' an expended D motor t' make a motor block. A little glue and t' spent casin' t' push t' block down t' t' hook wire. Begad! Blimey! Finally, I used 4 o' t' centering rings. Ya scallywag! Blimey! I notched 2 o' t' rings t' clear t' hook. T' original kit has its aft centerin' rin' even with t' body tube. Begad! Blimey! Aye aye! Blimey! Its centerin' rin' is 1/4" thick. T' Semroc rings are fiber board, so I glued 2 together t' increase the thickness. These rings glue t' t' motor tube 0.925" from t' aft o' t' tube. Begad! Blimey! Begad! Blimey! T' third rin' overlapped t' hook by about 1/2" from t' top. Aye aye! Blimey! T' last rin' glued onto t' front end about 1/8" down.

While t' motor mount be drying, I worked on t' fins. Begad! Blimey! Since t' enlarged win' fins are 6.388" long, I decided they should use through t' tube mounting. Avast! Well, blow me down! Blimey! I sketched tabs onto t' enlarged fin pattern for both t' wings and the tail fin (I did nay bother with tabs for t' canards since they are small and t' motor tube did nay extend that far), matey, matey, takin' into account t' need t' avoid t' third centerin' rin' on t' motor mount and then cut all t' fins out. Meanwhile, shiver me timbers, matey, I learned a valuable lesson: pay attention t' which tube is which. I drew tabs for t' difference between the ST-18 and t' ST-13, matey, but t' motor used t' ST-9. Begad! My tabs were too short! Blimey! I cut some extra balsa that I glued onto my tabs t' lengthen them.

I took a strip o' paper, arrr, wrapped it around t' ST-18 body tube and marked where they overlapped. Aye aye! Avast! I removed t' paper and measured its length. Avast! Ya scallywag! I divided t' length by 3 and by 4 and marked t' paper accordingly. Arrr! T' "by 3" marks indicated where t' wings and tail go, ya bilge rat, t' "by 4" indicated where the canards and launch lug belong. Avast, shiver me timbers, me proud beauty! I reapplied t' paper t' t' tube, transferred t' marks, me bucko, me hearties, and then lengthened t' marks along t' body tube.

I double checked t' tab placement on t' wings and tail against t' motor mount assembly. Arrr! I held t' win' and tail fins against t' body t' mark where t' cutouts would be required for t' tabs. Begad! Then usin' a new, sharp blade, I cut out t' tab slots. Well, blow me down! Ahoy! I checked t' fit o' t' fins and then glued t' motor mount in with t' motor hook aligned with the tail line. Blimey! Well, blow me down!

I again checked t' fins into t' slots and t' fit with t' motor tube. After me first error, me bucko, I made t' tabs a little long and sanded them down t' fit, then glued t' wings and tail on. Ahoy! After t' fins were dry, me bucko, I added t' canards and launch lug. Well, blow me down! Once they were dry, shiver me timbers, I applied a glue fillet t' all t' joints. Begad! Last, matey, I cut t' 1/4" dowel t' size and glued these t' t' ends o' t' win' fins and t' t' sides o' t' launch lug. Begad! Ahoy! T' ST-13 tube got cut into 2 lengths each 5.088" long. These got glued onto t' tops o' t' win' fins.

I used 4' o' 1/4" elastic with a standard Estes tri-fold mount for t' shock cord.

T' nose cone be a bit long for t' 1.85x upscale plus it was more pointy. Well, me hearties, blow me down! I cut 1/4" off t' top and then sanded t' cone t' be more rounded and a better match t' t' original cone. Begad! Ya scallywag! A screw eye be installed t' tie t' shock cord to. I am goin' t' use a stock 18" chute that I have lyin' around.

Construction:
This was me first attempt at upscalin' a rocket. Avast, me proud beauty! I did nay want anythin' too wild or difficult, me hearties, but I wanted somethin' more than a 3FNC rocket. Avast, me proud beauty! Blimey! I finally decided on t' Starlight F-32 Avenger. Avast! This kit looks like a delta wing fighter with tubes as engine pods/nacelles with additional canards and some dowels for details.

My first design decision was how much t' upscale. T' original kit uses 2 different size body tube, a BT-50 for the main tube and BT-20 for t' "engine nacelles". Avast, me proud beauty! Blimey! After comparin' available tubes (and knowin' t' delivery speed which I needed since I procrastinated, me bucko, again), I went with Semroc products. I replaced t' BT-50 with their ST-181120 (a 1.885x factor) and t' BT-20 be replaced with their ST-13105 tube (a 1.821x factor). Ahoy! Ahoy! I used t' average (1.85x) for all t' other dimensions. Arrr! Avast, matey, me proud beauty! T' longest size 18 tube is only 18" long. I needed 22.2" for t' new body tube, me hearties, so I ordered 2 o' t' 12" tubes plus an HTC-18 coupler. One o' t' tubes I cut down t' 10.2" and used t' coupler t' join t' tubes t' have an overall 22.2" length. Other parts that I ordered included:

• BC-1853 Balsa nose cone
• CR-918 Centerin' rings (pkg o' 6)
• EH-38 Long Engine Hook
• LL-3B 3/16" X 2" launch lugs
• ST-950 Size 9 x 5" body tube for motor mount.

In addition, me bucko, I picked up some 1/4" dowel and 3/16" x 6" x 36" balsa from AC Moore.

Finishing:
I used Elmer's Fill 'n' Finish for t' spirals on t' tubes plus I sealed all t' balsa. Ahoy! Aye aye! I first used Krylon gray primer (I feel it has better fillin' properties and is better for sanding), arrr, arrr, sanded, then Krylon white primer, and then finally 2 coats o' Krylon gloss white.

I used a copy machine with a ruler t' enlarge t' decals by 1.85x. Ahoy! T' decals are mostly black and white. Begad! T' red stripes I plan t' use tape t' duplicate, but for me initial flights I flew both this upscale and t' original kit without decals.

Flight:
I did a total o' 4 flights. T' first three all were on D12-3 (with an extender since I made t' motor mount for an E length) and t' fourth flight be on an E9-4.

When I first went t' me local launch field (a school yard), ya bilge rat, shiver me timbers, I had t' turn around as t' field was in use. Ya scallywag! Avast! After dinner, I returned t' t' field and it be empty. Ahoy! I set up 2 launch pads (I was also flyin' t' original kit).

For t' upscaled version, all flights were nice and straight. Blimey! I was actually surprised that with t' large wing fins it did nay weathercock more, matey, but then again t' winds were very light (<5mph). Avast! Avast, shiver me timbers, me proud beauty! T' D12-3 be just about perfect--the nose was just goin' down when t' chute would be ejected. For t' E9-4, ya bilge rat, me bucko, t' chute did nay deploy until about a second after apogee.

Recovery:
I had no problems with me shock cord. Aye aye! I had protected everythin' with a generous load o' dog barf. Ahoy! Well, blow me down! T' descent rate was good--nice soft landings. Ahoy! My only issue be t' field is shielded by some hills so at ground level where I launched there were no winds. Ya scallywag! Ya scallywag! Higher up it was a different story. Blimey! Ya scallywag! I had a good hike through a weed field after t' E9 flight, but I got it back.