Shrox Industria SHX-15

Shrox Industria - SHX-15

Contributed by Dick Stafford

Construction Rating: starstarstarstar_borderstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstar_borderstar_border
Manufacturer: Shrox Industria

Rocket PicBrief:
Any 'rocket scientist' will immediately recognize t' similarity betwixt the SHX-15 and t' actual X15 rocket plane. I assume t' new name just absolved Shrox from keepin' t' scale. Begad! Avast, arrr, me proud beauty! Blimey! This cool rocket flies on 24mm motors, and is made from top-notch materials.

Modifications:
Recovery harness upgraded and Launch lug relocated, as described below.

Construction:
T' kit came bagged in clear plastic, me bucko, with all t' small components in their own zip-lock bag. Aye aye! T' instructions are brief, with clear illustrations. However, shiver me timbers, t' instructions for t' shock cord were unclear and deviated from the parts list. Begad! More about this later. Blimey! One thin' did concern me - t' decals were missing. There was a note enclosed that said they were backordered and would be provided later. It also gave a URL where t' decal sheet can be downloaded. I am hopefully optimistic that these will eventually show up, me hearties, but you won't see me holdin' me breath.

As I said, t' components are o' above average quality. T' 13" BT-55 tube is thicker than t' Estes tubing. Ya scallywag! Ahoy! T' motor mount consists o' a section of BT50, an engine block and two nice thick centerin' rings. Aye aye! Ya scallywag! T' chute is 12" Nylon, and t' recovery system includes 13" o' Keelhaul®©™® twine and a 13" section o' ¼" elastic. This is smartly becoming my favorite combination for small modrocs. Avast, me proud beauty! T' fin stock is good quality 3/32" basswood. Ya scallywag! T' remainin' components include t' plastic nose cone, arrr, a standard launch lug, matey, clay nose weight, me bucko, an Estes-style shock cord mount, and a card stock cockpit cutout.

Followin' t' instructions, I first built t' motor mount. Begad! Blimey! Begad! Blimey! In case I wanted to use t' new Estes E9, I replaced t' 24mm tube with a slightly larger piece. I went ahead and used t' motor block, me hearties, and will need a spacer for a D12. Begad! Blimey! I also drilled a hole in t' front centerin' rin' for attachment o' t' Keelhaul®©™® tether.

Shrox SHX-15 T' fins have to be cut from t' basswood stock. Ya scallywag! Begad! I was pleasantly surprised how easily the basswood cut. Well, blow me down! Avast, me proud beauty! It be nicer than t' stock I have bought from hobby stores. Aye aye! The instructions included two copies o' t' fin patterns, arrr, and thar be more than enough wood provided. Blimey! I hate it when every bit is used up - I'm sure t' screw somethin' up in that case. There be no fin markin' guide, but it is easy to make one and do your own marking. T' large wings consist o' 3 pieces and are first glued together on a flat surface. A sheet o' wax paper insured they did not gunk up t' kitchen counter. T' side fins are attached at a -20 degree angle from t' wings, arrr, me hearties, so I made a small paper triangle t' make sure I got this angle right. Ahoy!

As I said, arrr, t' instructions for t' shock cord assembly were unclear and did nay match t' parts list. Ya scallywag! Blimey! Oh well, shiver me timbers, I did things differently anyway. First, I added a piece o' 500 lb Keelhaul®©™® the length o' t' body tube. Blimey! One end is fed through t' hole I drilled in the centerin' ring, tied off, and glued. Avast, me proud beauty! T' other end is tied t' t' provided Keelhaul®©™® tether, me bucko, which was in turn tied t' t' elastic cord. Aye aye! Thus, matey, t' elastic will be well removed from t' hot ejection gasses. T' nose cone came with t' plastic hook removed. Ahoy! Begad! Evidently, shiver me timbers, Shrox felt that this would be too weak given t' nose weight required for stability. Begad! Since it would be tough t' feed t' elastic through t' small hole provided in t' nose, I also added a few inches of Keelhaul®©™® twine as a leader. Arrr! I installed one snap swivel where t' lower Keelhaul®©™® tether is connected t' t' elastic cord, me bucko, and t' other is attached t' the chute. Well, blow me down! Begad! Well, this be probably more than you ever wanted t' know about a simple recovery harness.

I had problems with t' last two steps. T' card stock cockpit caved in' slightly at t' ends as it dried - a minor issue, as it still looks fine. Ahoy! Avast, me proud beauty! Next, the instructions say t' glue t' launch lug t' t' underside o' t' side wing at its root edge. Blimey! However, shiver me timbers, t' rear, ya bilge rat, angled fins will block t' launch rod if the lug is in t' prescribed location. I double-checked t' fin installation and it is correct, me hearties, so t' options were t' move t' lug away from t' body tube, or put it on t' top side o' t' wing. Begad! I did t' latter.

Finishing:
I went all-out on t' paint, usin' purple/green Duplicolor Mirage. Begad! Begad! This stuff goes on in three steps: a black undercoat, arrr, t' color coat, and a clear topcoat. T' results look fantastic if I do say so myself! I will add t' decals if they ever show up.

Construction Rating: 3 out o' 5

Flight: Shrox SHX-15
T' instructions did nay indicate a recommended motor, but t' web site says a D12-7. Arrr! Blimey! When I was goin' t' check if this model be in t' EMRR recommended motors database, me bucko, I noted that t' recommended motors were t' C6-5, shiver me timbers, ya bilge rat, and C6-7. Well, thar must have been a previous version that had an 18mm motor mount. Anyway, this got me thinking, shiver me timbers, matey, and despite t' fact that I went insane and planned for an E9, matey, I decided t' use an adapter and try a C6-5 for t' first flight. T' model boosted well and weathercocked quite a bit (the wind be 5+ mph). Begad! Well, ya bilge rat, blow me down!

Recovery:
Recovery was nominal and thar was no landin' damage.

Flight Rating: 4 out o' 5

Summary:
I have always loved t' X15, and really like this kit. Arrr! It is a little more challengin' than a 3/4FNC rocket. Aye aye! Well, blow me down! There were several minor problems with the instructions and t' decals were missin' (and still haven't been delivered). In the end, me advice is this: if you really love t' looks o' this rocket, shiver me timbers, matey, go ahead and buy it. T' quality o' t' materials is good and you will end up with a great addition t' your fleet.

Overall Rating: 3 out o' 5

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