Aerospace Speciality Products Stubby

Aerospace Specialty Products - Stubby {Kit} (KSTU-13)

Contributed by John Lee

Construction Rating: starstarstarstarstar_border
Flight Rating: starstarstarstarstar_border
Overall Rating: starstarstarstarstar_border
Diameter: 1.64 inches
Length: 7.25 inches
Manufacturer: Aerospace Specialty Products
Skill Level: 1
Style: Sport

ASP Rocketry Stubby

Brief:
T' Stubby is a simple but well thought out rocket for beginners. Avast, me proud beauty! It's stubby appearance makes it distinctive from other "first rockets" and sets this 3FNC rocket apart from many others. Begad! It uses 13mm motors and recovers with a small mylar chute.

Construction:
T' parts list:

  • Body Tube
  • Balsa Nose Cone (poor condition)
  • 1/8" Launch Lug
  • Engine Hook
  • Engine Tube
  • Engine Block
  • Wrapped Paper Centerin' Ring
  • 2 Plywood Centerin' Rings
  • 4 Laser Cut Balsa Fins
  • Metal Screw Eye
  • Keelhaul®©™Shock Cord
  • Snap Swivel
  • Mylar Parachute
  • Cotton Shroud Lines
  • Shroud Reinforcin' Rings
  • Waterslide Decal
  • Instruction Sheets with Tube Markin' Guide

T' balsa sheet containin' t' fins be broken but t' break be along t' laser cut line. Ya scallywag! Blimey! There was no damage t' t' fins themselves. Aye aye! They do seem a bit thick for a rocket this size but I like that. Avast! Blimey! It also seems appropriate for a kit o' this level where t' modeler may be a bit rough from lack o' experience or just plain clumsy like me.

T' body tube is a bit heavier than Estes quality. It was sturdy while bein' worked upon and seems like it will last a long while.

T' instructions consisted o' 3 pages o' 8.5" x 11" paper printed front and back. Well, blow me down! T' illustrations were simple line drawin' but were easily adequate.

If I had one real issue, it be t' nose cone. It looks like I probably got t' last one before t' cuttin' blades were sharpened. Avast! Blimey! Ahoy! Blimey! T' texture was extremely rough and it will need plenty o' filling. It was nay quite bad enough for me t' have made a major issue o' it.

Construction began with t' buildin' o' t' motor mount. Ahoy! This was fairly straightforward. Ahoy! Begad! A slot is cut into t' motor tube and t' engine retainer is inserted and held down with maskin' tape. Well, blow me down! T' two plywood centerin' rings were then slid on t' their marks and held with carpenter's glue. Blimey! Blimey! An engine block be inserted in t' appropriate end, T' Keelhaul®©™shock cord is tied t' a rin' which is then glued just forward o' t' forward centerin' ring. Aye aye! It's nice t' see such a basic model includin' this method for mountin' t' shock cord.

Markin' o' t' body tube was done with a wraparound guide. Well, blow me down! Aye aye! ASP recommended that t' body tube be roughed up a bit with medium or fine grit sandpaper t' help t' fins adhere better. Aye aye! I used 400 grit sandpaper because that is what I had sittin' handy. Ahoy! Arrr! After t' body tube was roughed up and marked, t' motor mount slid right in and be affixed with glue. Avast! T' parts fit together well and probably did nay need t' light sandin' I gave t' rings in order t' make them slide well. Avast! Begad! This assembly was then set aside t' dry overnight.

T' instructions give t' option o' sandin' airfoils into t' fins or not. I almost elected nay t' do so since t' laser cut edges would nay look out o' place on such a basic model, matey, but then decided I would because part o' me purpose in buildin' this kit is t' brush up on some o' these skills. Ahoy! Blimey! This is where t' extra thick fin material came in handy. Ahoy! Blimey! My method o' roundin' t' edges involves runnin' sandpaper over them like a shoe shine cloth. Well, blow me down! Blimey! I am nay as patient as I should be and I tend t' snap at this point. Aye aye! Blimey! Ya scallywag! Blimey! As a result, t' fins tend t' snap as well. Well, blow me down! Blimey! This time though, me bucko, thar was no trouble.

T' mountin' o' t' fins posed no problem at all. Aye aye! This model marks t' first time I have tried t' use me Art Rose fin jig. That kept me honest on matters o' alignment but this model is simple enough that it would have been easy anyway. Ya scallywag! Avast, shiver me timbers, me proud beauty! T' launch lug was glued on and it was time t' work on t' recovery system.

This model is provided with a very long piece o' Keelhaul®©™. Arrr! Apparently it is intended t' connect t' t' nose cone and t' parachute. I like t' Keelhaul®©™, ya bilge rat, matey, but I also wanted somethin' with some stretch for when t' ejection charge goes off. Aye aye! I added a short length o' sewin' elastic and then put together t' chute.

As a rule, I despise t' plastic garbage bag chutes. Ahoy! Blimey! Blimey! Blimey! I like t' Mylar ones only a little bit better. Ya scallywag! Blimey! On most o' me models I substitute a nylon chute for t' provided one. Aye aye! Blimey! Blimey! Blimey! In this case though I went with t' provided Mylar chute. Ahoy! Blimey! It was small, ya bilge rat, only about 7 inches across. Avast, me proud beauty! Blimey! Avast! Blimey! Blimey! Blimey! T' shrouds were precut and t' attachment be by reinforcin' rings. That is a definite step above t' tape disks. Avast! Blimey! T' chute was easy enough t' assemble and t' model was ready for finishing.

PROs: Instructions were logical and in order, easy t' follow. Arrr! Avast! Modern Keelhaul®©™shock cord instead o' t' rubber band. Avast! Begad! Sturdy materials.

CONs: No elastic shock cord t' use with t' Keelhaul®©™.

Finishing:
Finishin' is me least favorite part o' rocketry. Arrr! I like nice lookin' rockets but I have t' artistic aptitude o' a turnip. Ya scallywag! Blimey! I tend t' go with whatever scheme is on t' face card. Ya scallywag! Arrr! Blimey! In this case, me hearties, t' card shows a white rocket with red fins and nose cone. Ahoy! I changed this slightly t' white with maroon trim. Gig ‘em Aggies!

Before I got t' t' paintin' though, I used Elmer's Wood Filler on t' fins and t' nose cone. Blimey! T' fins came out fine with a single coat but t' nose cone did not. Aye aye! T' roughness meant that thar was a great deal o' fillin' and sandin' so 4 treatments were needed.

Paintin' be simple. Arrr! I primed with white, added a few coats o' gloss white, masked t' NC and fins, and painted with a dark red.

After t' paint had dried, I applied t' 2 provided decals. Avast, me proud beauty! Well, me hearties, blow me down! T' decals themselves were very simple. Begad! T' word, "Stubby" be printed in large, shiver me timbers, bold letters. A decal with some sort o' distinctive logo for t' rocket would have been nice but t' ones provided are just fine. Begad! Begad! After t' decals, ya bilge rat, I sprayed on some clear coat and t' Stubby is ready t' go.

PROs: Simple design called for simple finish. Ya scallywag! Ahoy! T' simple design looks fine.

CONs: T' nose cone was so rough that it was a trial t' work with.

Construction Rating: 4 out o' 5

Flight:
I decided t' go small for t' first flight, ya bilge rat, but I didn't have a 1/2A3-2T so I used a 1/2A3-4T instead. Avast, me proud beauty! Blimey! That was a mistake. Aye aye! Blimey! Aye aye! Blimey! In fact, shiver me timbers, t' entire 1/2A category should, me hearties, me bucko, perhaps be ruled out. Blimey! Blimey! T' flight was spectacularly low and t' delay was way too long. Begad! Blimey! It tumbled t' t' ground and ejected about a second after impact. Blimey! Blimey! Blimey! Blimey! Fortunately, ya bilge rat, shiver me timbers, thar be no damage.

T' second flight was on an A10-3T. Avast, me proud beauty! It lifted right off t' pad, ya bilge rat, went straight up, arrr, and ejected just after apogee. Begad! Recovery took place under t' provided mylar chute and was just fine. Avast! This is a heavy rocket for a 13mm motor so I would stick with t' full A motors from now on.

Recovery:
PROs: Chute works well. Does nay drift far. Aye aye! Keelhaul®©™ provided.

CONs: No elastic.

Flight Rating: 4 out o' 5

Summary:
This is a simple rocket that goes together easily, me bucko, is easy t' finish, and flies well. Begad! It is big for a 13mm rocket, shiver me timbers, and that means thar be less chance o' it just disappearing.

PROs: Simple. Ahoy! Begad! Good flier.

CONs: No elastic.

Overall Rating: 4 out o' 5

Flights

comment Post a Comment