Constructin' t' THOY Phoenix

This is a high power rocket kit originally developed by Tiffany Hobbies O' Ypsilanti (Michigan?), matey, and now produced by Rocket R&D. Begad! T' suggested motors run from G t' H, me hearties, matey, but unless you build very light, G’s might work only on absolu

tely calm days. Begad! I won this kit in an online raffle sponsored by Magnum Hobbies almost three years ago, but waited until this winter t' build it.

Components

T' included parts are o' very high quality. Begad! Ahoy! T' 4" body tube is thick-walled kraft paper, me bucko, with marks showin' where t' fin slots and launch lug need t' go. Aye aye! You must cut t' slots yourself. T' fins (8) and centerin' rings (2) are beautiful, made o' 1/8" plywood and cut perfectly. Avast! Arrr! T' fins are through t' wall, and t' tabs go all t' way t' t' motor mount. Avast, me proud beauty! Avast! T' top centerin' rin' comes with a braided steel shock cord anchor pre-mounted, and needs only a spot o' epoxy t' finish it off. Begad! T' nose cone is from ACE, ya bilge rat, me bucko, me hearties, and interestingly enough has a screw cap located on t' bottom instead o' t' customary plastic loop. Arrr! Blimey! T' motor mount tube is 38mm. Completin' t' kit is a ½" launch lug , ya bilge rat, matey, ya bilge rat, a nine foot length o' nylon webbin' (1" wide) shock cord, a 36" nylon parachute, shiver me timbers, me bucko, a page o' self-adhesive decals for military style detailing, matey, arrr, matey, clay for nose weight, along with two pages o' instructions, arrr, shiver me timbers, one o' which is a general guide t' paintin' and decal placement. T' instructions are basic but complete, and include some decent diagrams for assembly steps. Avast! It is assumed that you have some buildin' experience. Begad! Aye aye! Apparently, me bucko, ya bilge rat, at some point a different nose cone was supplied, because t' instructions call for tyin' t' shock cord t' t' plastic loop on t' nosecone, which, shiver me timbers, as noted above, me hearties, arrr, doesn't exist. Aye aye! T' decals were t' weakest part o' t' kit. Begad! Ahoy! I don't much like self-adhesive decals anyway, but these were among t' worst I've seen. Ahoy! Ya scallywag! T' printin' was smudged in several places and peelin' in others (age may have been a problem). Avast, me proud beauty! T' finished product is acceptable from 6 feet away, me hearties, which is good enough for me, ya bilge rat, but t' decals really disappoint close up. Ya scallywag! Ahoy! A little effort t' re-create your own water slide decals t' match, me hearties, shiver me timbers, or t' have them cu

stom made is an option t' consider.

Construction

For t' most part, construction was straightforward. Avast, me proud beauty! Arrr! T' fin slots were cut usin' a new x-acto blade and a straightedge. Begad! Well, blow me down! Take your time and don't try t' cut all t' way through at once and you'll be done before you know it.

T' instructions give measurements t' sand t' fins t' their true scale shape, arrr, but after slightly goofin' up t' first fin, I just rounded them all off. Avast! Blimey! Well, blow me down! Blimey! Elmers Fill ‘n’ Finish be used t' seal and fill t' grain on t' fins and t' fill t' body tube spirals.

To me, t' biggest worry about any Phoenix model are those aft fins. They just look like a pop off waitin' t' happen. Begad! Begad! T' further strengthen this area, I added a third centerin' rin' t' sandwich t' tabs o' t' lower fins. Begad! This extra rin' was made o' two thicknesses o' balsa, me bucko, glued together with t' grains runnin' perpendicular, me hearties, matey, and then thin CA was soaked into t' wood. Aye aye! Very light and strong.

One trick I've found w

henever workin' with fin tabs that go all t' way t' t' motor tube is t' trim a small bit o' t' corner where it's goin' t' meet a centerin' ring. Avast, me proud beauty! This way there’s room for any glue fillet that might already be present. Avast! See t' illustration for what I mean.

T' instructions are very clear, shiver me timbers, and make assemblin' t' motor mount and fins a two-step process, matey, first t' motor mount, arrr, then t' fins. Begad! I'll describe here how I did it, matey, me bucko, which was t' combine t' steps into one. Avast, me proud beauty! Begad! T' reason I did it me way be t' strengthen t' bottom fin section usin' that extra centerin' ring.

Before doin' this, drill two small holes in t' balsa rin' and thread some strin' through them. These are your handles, and you'll see what they're for in a minute.

First thin' is t' glue t' front centerin' rin' into place on t' motor tube as indicated in t' instructions. Avast! When dry, I slipped t' balsa rin' over t' back end o' t' motor tube without gluin' it, just t' center t' motor tube correctly. Then I set t' rocket upright and drizzled more glue around t' joint where t' top centerin' rin' meets t' body tube. Ya scallywag! Tilt t' tube slightly t' make sure t' entire edge o' t' rin' is glued t' t' tube wall.

Once dry, ya bilge rat, me bucko, matey, I turned t' rocket over again and, matey, usin' those strin' handles, me bucko, removed t' bottom centerin' ring. Now I glued t' forward set o' fins into place, makin' sure that they were aligned correctly. Well, blow me down! Fillet well on t' inside where t' tab comes through t' slot and at t' motor tube joint.

At this point, I had t' straighten t' forward fins, matey, me bucko, because two o' them had developed a slight bow from leadin' t' trailin' edge. Blimey! T' way I did this was t' clamp a straight steel bar along t' length o' t' fin, which forced it straight. Well, ya bilge rat, blow me down! Next came punchin' small holes into t' body tube along t' fin root, which allows t' epoxy t' flow into them and create ‘rivets’ as it cures. Begad! T' final step was layin' a good fillet o' epoxy along t' fin root. Arrr! T' glue held t' entire fin root straight, which removed t' warp from t' plywood. Ya scallywag! Ya scallywag! Each side o' each fin be done t' same way.

Time for t' second centerin' rin' (the one made from balsa) and bottom fins. Place t' centerin' rin' on t' tube, me bucko, and let it slide down past t' bottom fin tab slots. Begad! Next, me hearties, insert t' bottom fins through t' slots, mix up a small batch o' 5 minute epoxy, shiver me timbers, me bucko, and use t' strin' t' pull t' centerin' rin' up tight against t' bottom fin tabs. Add small dabs o' epoxy betwixt t' fin tabs along t' body tube wall and motor tube, so that once t' epoxy cures t' rin' is in place. Ya scallywag! Well, blow me down! T' fins are still nay glued into place, me bucko, just t' balsa centerin' ring, which acts as a ‘floor’ for t' lower fin tabs (see t' picture).

T' bottom fins must be aligned with t' top fins before gluin' them into place. Begad! I used a straight wooden yardstick clamped along t' length o' t' upper fin, then clamped in turn t' t' bottom fin t' get t' alignment needed. Ahoy! This lined up t' fin roots, but t' ensure that t' two fins both were at t' same angle t' t' tube, arrr, I used an Estes 2-piece rod, shiver me timbers, and clamped one half on each side o' t' fins, runnin' with t' leadin' edge (see t' picture). Begad! Avast, me proud beauty! Then I glued t' fin and fin tab into position. Ahoy! Aye aye! Fillet everythin' well, me bucko, matey, inside and out. Avast, me proud beauty! Let it dry, ya bilge rat, then do t' next fin. Ya scallywag! Well, blow me down! When you're done, me bucko, you'll have a rock solid assembly for t' bottom fins, and they'll be perfectly aligned.

Once dry, me hearties, I fastened t' bottommost centerin' rin' into place, and filleted it well. Avast, me proud beauty! Arrr! Blimey! Instead o' centerin' t' launch lugs betwixt t' fins as called for in t' instructions, ya bilge rat, me bucko, I offset th

em slightly closer t' one side, arrr, so that I could install rail buttons as well.

On t' t' nosecone. Blimey! After lightly sandin' t' remove t' mold seam, arrr, as well as t' provide some ‘tooth’ for t' finish t' hold on to, I packed t' supplied clay into t' nosecone. Begad! Usin' a dowel as a ramrod, t' clay was pushed as far as possible towards t' tip. Arrr! Next I drilled several 1/16" holes through t' nosecone at t' level o' t' clay. Avast, me proud beauty! Coverin' these holes with maskin' tape, matey, I then poured a batch o' 15 minute epoxy into t' nosecone, ya bilge rat, on top o' t' clay. Blimey! Ya scallywag! Once again, t' epoxy ran into t' holes, creatin' rivets as it cured and ensurin' that t' clay would stay right at t' top o' t' nose. Avast, matey, me proud beauty! Once cured, t' maskin' tape was removed, and t' holes and rivets were sanded smooth.

Finishin'

I covered t' entire rocket with 3 coats o' ruddy brown automotive primer, lightly sandin' betwixt coats. Ya scallywag! Begad! This primer has a high solids content, and filled t' last o' t' spiral grooves and wood grain. Begad! Read t' can though! T' brown primer that I used be leftover from some auto bodywork I did a while back, and had a dryin' time o' 5 days, me hearties, shiver me timbers, which I've never heard o' before for any other primer (and didn't think about until after I'd already sprayed t' first coat). Begad! T' body o' t' Phoenix is pale dove gray, arrr, arrr, matey, so – 5 days later – I next sprayed t' body with 2 coats o' Krylon white primer, arrr, sandin' betwixt coats. Ya scallywag! I be worried that t' gray would have a hard time coverin' t' brown primer, so I chose t' white t' lighten t' final coat color even more. Well, blow me down! T' nosecone is white, so I used Krylon gray primer there, mainly so I could tell when I had good coverage on t' final color coat. Avast! Sprayin' white paint on white primer is tough. Avast! I set t' whole thin' aside t' dry for a week.

Final Details

T' markings guide provided in t' instructions is pretty general, shiver me timbers, shiver me timbers, and since this is just ‘scale like’, ya bilge rat, I didn't feel real obligated t' follow it t

o t' letter. Begad! Arrr! I opted t' simplify t' stripin' scheme, mostly t' cut down on t' difficult maskin' needed (probably me least favorite rocket buildin' step). T' silver stripes are mylar tape. Begad! Avast, me proud beauty! T' decals were added more or less where indicated, and t' tip be painted silver usin' a brush and Testors silver model paint from a jar. Arrr! Begad! Once again I set it aside for several days, then clear coated everythin' usin' Future floor finish applied with a soft rag.

I didn't use t' supplied nylon webbin' for t' shock cord, ya bilge rat, preferrin' 20 feet o' 3/8" tubular nylon attached with a quick link. Avast! Aye aye! At t' nosecone end, shiver me timbers, I drilled two holes on either side o' t' screw cap – one on each molded half - and threaded more tubular nylon through both holes as a harness where t' shock cord can be attached with another quick link. Well, blow me down! There would have t' be massive structural failure o' t' entire base o' t' nosecone t' experience a separation failure at that point.

Motor retention clips were formed from strip brass stock, fastened with cap screws fitted into blind nuts installed in t' aft centerin' ring. Avast! A Pratt heat shield was added as wadding.

T' final, full up, me bucko, everything-but-the-motor weight is 43.5 ounces.

Flight

First flight was at Whitakers, N

orth Carolina on March 25, matey, 2001, on an H180W with a medium delay. At ignition she punched off t' pad straight up, matey, movin' fast. Durin' t' coast phase, arrr, t' fins made a neat whistlin' sound, and t' chute ejected just after apogee. Begad! T' chute brought t' Phoenix down t' a soft landin' less than 100 yards from t' pad.

Post Flight

T' Pratt heat shield did its job perfectly, without so much as a single scorch on t' chute or shroud lines. T' 36" chute is fine for near-calm days, but I think that on windier days I'll probably use a 32" or even 30" chute, especially since t' aft fins are reinforced and should be able t' handle a harder landing.

All in all, this is an impressive kit! T' Phoenix is a challenge t' build without bein' overly complex, me hearties, and t' end result is a great lookin' rocket that attracts attention. Well, blow me down! There be a lot o' satisfaction for me in completin' this rocket, and t' fact that she flies like a dream just made t' whole experience that much better. Begad! Highly recommended.