Rocket Pad USSC Shark

Rocket Pad - USSC Shark

Contributed by Nick Esselman

Manufacturer: Rocket Pad

[Picture](08/01/04) There started t' be some chatter about a "new" rocket kit manufacturer called Rocket Pad, but t' online community only saw kits listed on eBay. Ahoy! T' auctions would be one kit and then you might see another kit later on. Blimey! One thin' that caught my attention was t' variety o' kits. Ya scallywag! Ahoy! There are those controversial "clone" kits o' old Estes and Centuri models, which I personally avoid. Ya scallywag! Then thar are unique kits such as t' USSC Shark, me bucko, which caught my attention. Ya scallywag! I actually lost t' bid (couldn't stay up that late), me hearties, but e-mailed the seller and he told me he had another, so I matched t' price.

My USSC Shark came packaged very well and was shipped USPS Priority mail. Begad! Well, blow me down! Bein' me first exposure t' a Rocket Pad kit, I readily jumped into t' buildin' experience. Ahoy! Avast! In general, I have been pleased, but follow along with this review.

Rocket Pic

T' rocket includes a 14" long, 2.6" diameter, me bucko, ya bilge rat, me hearties, white paper body tube for t' main body and a plastic nose cone t' make up t' 22 3/4" length. T' kits includes three (3) sheets of 3/32" basswood for t' fins, two (2) 1/4"x1/16" balsa strips for detail, me bucko, two (2) 3" dowels, and cardstock fin cuttin' templates t' make up the fins. Blimey! There are two (2) plywood centerin' rings, matey, ya bilge rat, a 24mm motor tube, thrust ring, me bucko, and a retainer hook t' make up t' motor mount. Begad! T' recovery system made up o' a Keelhaul®©™® shock tether, elastic shock cord and an ASP 18" mylar parachute. Ahoy! Begad! T' finish things up thar be a 3/16" Launch Lug, a bag o' clay for nose weight, matey, matey, and some water slide decals. Ya scallywag! The parts list said thar be a "Green Spacer for "D" motor use", arrr, but me kit did nay have one in there.

CONSTRUCTION:

T' instructions are printed on 5 pages of 8½ x 11" paper. Avast, ya bilge rat, me proud beauty! Blimey! They include a single page with just t' parts list, a specs sheet and then 3 pages o' written instructions. Well, blow me down! Blimey! There are no pictures or illustrations in t' instructions, however, ya bilge rat, attached t' t' back o' them are 3 pages o' B&W photos o' t' motor mount, me bucko, t' aft end detailin' where the motor hook should be aligned to, ya bilge rat, and t' upper fin detailin' where t' balsa strip should be. Well, blow me down! Blimey! There is also a 4th page with an illustration showin' how to put t' clay into t' nose cone. Blimey! Blimey! In addition, thar be a generic tube marking guide (for 1.637" and 2.6" tubes for 3 and 4 fins), me hearties, ya bilge rat, and three (3) fin templates on cardstock paper.

T' instructions were adequate for building the rocket, matey, however thar are quite o' number o' grammatical/spellin' errors. There was also a few mistakes, such as on step #7 it says, "Mark t' body tube (2.6" diameter) usein' t' enclosed markin' guide. Aye aye! Use t' marks with black dots only!". Avast! So this is a good idea since a general tube markin' template is provided, however, ya bilge rat, thar were no black dots on the Tube Markin' Guide.

T' rocket build was fairly typical, starting with t' motor mount first. Ahoy! T' retainer hook assembly is typical, but uses maskin' tape t' secure its position in t' center o' t' tube. Avast, me proud beauty! T' thrust ring is glued in behind/on top o' t' motor hook. Avast! Ahoy! T' fit o' t' plywood centering rings be perfect and didn't require any sanding. T' Keelhaul®©™® shock tether is threaded through t' top centerin' rin' (two small holes) and tied in a double knot. Blimey! Once this is done, arrr, t' motor mount is glued into the rocket body.

T' Parts List provides a note on which basswood sheet t' use for fin template #1 and #2. Ya scallywag! Ya scallywag! So after cuttin' out the templates from t' cardstock, they are placed on t' basswood sheets. Well, blow me down! There was a problem fin template #2. Arrr! Aye aye! There was nay enough basswood t' make two fins by ~1/4". Begad! I simply made each fin 1/8" shorter so I could finish it up. There were no size problem for fin #1 and t' top tail.

Fin

T' potential problem for t' upper fin is the direction o' t' basswood grain. Begad! Avast, me proud beauty! First off, ya bilge rat, me bucko, it is a good thin' that it is basswood because these fins would nay survive if they were balsa. Begad! However, shiver me timbers, the grain on t' upper fin is parallel t' t' body tube verses t' best known method o' havin' it parallel t' t' leadin' edge. Avast! Notice t' flex in t' upper fin? Will it snap? Time will tell.

Once t' fins are cut, me hearties, matey, sanded (rounded or airfoiled) as you deem necessary, they can be attached t' t' body tube. Arrr! I used wood glue t' do this and then used 5-minute epoxy for t' fillets. Arrr! I also fillets on t' underside o' t' top tail.

T' instructions are t' add t' Launch Lug 1 1/2" up from t' bottom betwixt t' upper tail fin and a side fin. Aye aye! I didn't like this for two reasons: 1) typically and where possible t' Launch Lug should be attached t' CG o' t' rocket, and 2) I felt it should be on the bottom, betwixt t' two side fins for looks. Arrr! I took action based on these two reasons and placed it 7 3/4" from t' bottom.

T' clay is squeezed off into smaller chunks, fed through t' hole in t' plastic nose cone and then tamped down with a dowel to make it stay.

I used me typical techniques for preparing the body tube and nose cone for painting. Blimey! Begad! T' basswood fins only took a couple coats o' Plasti-Kote primer as well. Ya scallywag! After it was ready, ya bilge rat, I primed the primer with Krylon White Primer. Ya scallywag! Avast, shiver me timbers, me proud beauty! I did this because I decided t' use up the Krylon Yellow and Blue paint that I had t' buy t' fix the Tour De Deuce rocket. (You should use white primer under lighter colors like Yellow). Begad! I am personally nay a huge fan o' Krylon paint, but it turned out lookin' okay. Aye aye! Arrr! I even painted t' tip o' t' dowels with bright orange (instructions suggested red).

Coming At Ya

Decals

There are water-slide decals provided with the USSC Shark. Begad! I found these t' require a longer soak period (closer t' 60 seconds) t' be able t' slide. Begad! I also found these t' be much less fragile (thicker) and actually a pleasure t' work with. Well, blow me down! Bravo! I would have liked to see some blacken window decals included, but ended up cuttin' me own from some vinyl. Avast! Aye aye! Lastly I clear coated t' rocket.

Overall, for CONSTRUCTION I would rate this kit 2 ½ points. It is a fairly straightforward kit t' build, shiver me timbers, but the instructions need some work. Well, blow me down! T' parts fit nicely and I'm pleased with the quality o' parts such as plywood centerin' rings, basswood fins, and plastic nose cone (glad t' nay have t' finish another balsa nose cone). Avast! T' fact that the kit provided motor retention, is Estes "E" capable and has decals (nice ones too!) are huge bonuses. Avast, me proud beauty! Missin' one part, and nay enough stock to cut out t' fins, matey, and that upper fin grain bein' parallel t' t' body tube forces me t' rate this slightly below average. Begad! If you're experienced, consider these items and then go get t' kit... Well, blow me down! if you can find one!

FLIGHT/RECOVERY:

Rocket Pad recommends t' D12-3, shiver me timbers, D12-5, E9-4, and E9-6 motors.

My rocket weighed in at 8.4 ounces.

Recovery System

I was pleased with me finish and looked forward t' flyin' this rocket since it is right in me favorite weight zone for 24mm rockets. D's are great for low altitude (my small fields) and E's and F's give t' bird some altitude. Aye aye! Blimey! This rocket weighs just about t' same as my favorite Nordic Meanie.

Launch#2My first flight was on a D12-3. Arrr! I had added a piece o' Nomex shieldin' so that I didn't need wadding. Aye aye! Everythin' was ready... Blimey! Begad! 5, 4, 3, 2, 1... Ahoy! Lift-off! Yes, me hearties, nice and slow, me bucko, then picked up speed, then turned ever so gently, ya bilge rat, then reach apogee, then ejection and full expansion o' t' silver parachute. Descent was a good speed.

Well, as I had anticipated, t' upper fin cracked! Had I nay been plannin' a "kit" review, I would have laminated this or got some larger basswood and cut it so t' grain was parallel to t' root edge. Aye aye! However, ya bilge rat, with kits, matey, I like t' try t' build them exactly accordin' t' instructions.

There is a fellow on TRF that has said he has flown his many times and never had an issue. Aye aye! Great for him and that is why we say t' reviews are only for information and that different rocketeers have different experiences. Aye aye! My seems t' be what one could expect.

I was able t' repair t' upper fin and decided that I would strengthen it with some balsa pieces. Aye aye! Ahoy! After sandin' and paintin' it looked pretty good. Blimey! (colors are t' same, one taken inside, other outside)


Cracked Repair

Cracked upper fin

I was able t' get out for a second flight (pictured above) on a D12-3 again. Avast, me proud beauty! T' flight looked great, like t' first, me hearties, arrr, and I really enjoyed it. After, me hearties, ejection t' rocket started t' descend back toward me and so I snapped off a couple o' pictures. Begad! I did this because it looked just like t' first flight and fell with t' tail cone angled for impact. Arrr! And sure enough, it cracked t' upper tail.

Since I cracked another tail fin I started thinkin' about this and here are me observations. Begad! Arrr! First, arrr, I noticed that as the rocket descended (on both flights) t' parachute leads t' rocket body. Ahoy! The rocket body hangs with t' tail fin facin' t' direction that it is descending and therefore it would hit t' ground first. Begad! Upon inspection o' me build, I see where t' Keelhaul®©™® shock tether is attached t' t' upper centerin' rin' is positioned down (opposite side as t' tail fin) and therefore it has a tendency t' lean this way. Blimey! DescentI did a static test at home and feel this is a strong argument, however, shiver me timbers, t' lower fins may be causin' t' drag that forces t' rocket in this direction as well. Ya scallywag! Arrr! I will test out me hypothesis by attachin' it t' t' opposition side and flyin' it again, but I'm convinced this is why me tail fin leads t' rocket on descent.

I'll update this later once I can test it. Ya scallywag! Blimey! If you have one o' these kits and are nay breakin' t' tail fin, matey, can you please tell me where your shock tether is attached? (I have learned that t' fellow on TRF is attached up, t' same side as t' upper fin and his does nay break)

For FLIGHT/RECOVERY, me hearties, I would rate this rocket 4 points. How could I rate this kit a 4 for flight when I have had two flights and both endin' in damage? Because I dinged t' kit's Construction ratin' for what is actually causin' t' breakage. Aye aye! Blimey! Flight-wise, I love this rocket. Ahoy! Blimey! Well, blow me down! Blimey! Slow lift-offs and has t' ability t' fly on D12's and E9's. Ahoy! Blimey! The parachute is sized right. Begad! Blimey! I have some concern about t' Keelhaul®©™® shock tether over time, but need some flights t' test that out.

I give t' rocket an OVERALL ratin' o' 3 ½ points. Aye aye! T' kit has great looks and is just t' right size and weight for Estes D and E motors with smaller fields. Ahoy! Avast! I would recommend this kit to experienced builders and suggest they take precautions against t' items I've highlighted. Wish we could get Rocket Pad kits from a website dealership, rather than havin' t' pay for eBay and Paypal charges (which are no doubt built into t' pricing) as well as them bein' in limited supply. Avast! Individual shipping and handlin' charges are high on these rockets as well, so maybe with more time, Rocket Pad will get a website together t' offer these kits at a lower cost.

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