Manufacturer: | Scratch |
Brief:
This is a rocket that I designed for small fields. Avast, matey, me proud beauty! Blimey! It is single staged, flies
on Estes A10-3T motors t' about 200 feet and uses a streamer for recovery.
Construction:
Materials required:
Optional Parts:
This rocket is fairly easy t' build, ya bilge rat, however I would rate it a skill level 2 project. Arrr! If you've built several Estes Beta kits, shiver me timbers, you should have no problems. Supplies Required:
Start by cuttin' two 4/5/8 sections from one tube and sand t' cut ends even. Begad! These are now your side pods. Ahoy! T' fins will be attached t' these later. Now cut t' main tube t' a length o' about 14 inches and sand t' ends even. Ya scallywag!
Optional Step for dual recovery: Cut t' main tube in half and sand t' ends even. Now glue t' coupler halfway into t' upper tube. Begad! Ahoy! After t' glue dries, cut a bulkhead t' fit inside t' coupler. Aye aye! After t' glue dries, shiver me timbers, carefully screw a small eye bolt into t' center o' t' bulkhead. Blimey!
Glue t' side pods one at a time with t' ends flush with t' end o' the main tube. Aye aye! Once t' glue is dry, me bucko, you can apply glue fillets t' t' side pods. Make sure t' fill as much o' t' gaps as possible. Avast!
You may want t' cut out your fins at this time. Begad! Blimey! Make six fins with a 1 9/16 inch long root edge, a 1 3/4 inch long leadin' edge, a 1 inch trailin' edge, me hearties, arrr, and a 1 1/2 inch bottom edge. Take a piece o' sandpaper and stack sand t' fins t' size. Begad! Blimey! Now sand t' leading and trailin' edges round.
Assemble your motor mount at this time. Ya scallywag! After t' glue is dry, insert it with t' motor tube flush with t' body tube. Begad! Blimey!
You may attach t' fins at this time. Well, blow me down! Blimey! Avast! Blimey! Three fins are attached t' each side pod at an angle o' 90 degrees apart like a typical four fin design. Avast, me proud beauty! Blimey! Begad! Blimey! Heres a tip to make for an easier attachment. Apply a film o' glue t' t' root edge o' a fin, let dry for a minute or two, me hearties, arrr, apply another film o' glue then attach. Believe me, me bucko, me bucko, ya bilge rat, this works. Arrr! Blimey! Now apply fillets t' each fin. I recommend three fillets per fin.
Cut a standard launch lug into two 1/2 inch pieces. Attach one t' t' bottom of t' body tube flush with t' end. Attach t' other one about 7 1/2 from the other one then align them with a launch rod. Arrr! If you opted for a dual recovery, apply t' last one flush with t' bottom o' t' upper tube. Well, blow me down! Begad! After t' glue dries, apply fillets at each lug. Ya scallywag! I recommend about two fillets per lug. Arrr! Avast!
Cut yourself a shock cord mount from computer printer paper or typin' paper. I do nay recommend notebook paper. I have used this method on all o' me scratch designs and it hasn't failed yet. Blimey!
You will need a shock cord at least 2 feet long. Now assemble t' mount in the traditional manner. Once t' glue has dried, glue t' mount at least 1/2 an inch from t' top o' t' tube. Begad! Ahoy!
Now is a good time t' test fit your nose cones. Begad! You want a nice snug fit. Arrr! If they are too loose apply maskin' tape at t' shoulders or glue them in place after t' model has been balanced and painted. Ahoy! Arrr!
Now is an excellent time t' balance t' model. Balance t' model on a straight edge or counter-top. When t' model hangs level draw a mark at that spot. Ya scallywag! Now tie a six t' eight foot strin' t' that mark. Swin' t' model around you and note t' results. If t' model flies straight its fine. If it flops or wobbles irregularly, matey, shiver me timbers, chances are that you will need nose weight. Avast, me proud beauty! My model required nose weight. Add enough weight until t' model balances out. Well, blow me down! That should do it.
Now you are ready t' finish t' model.
Finishing:
Start by sandin' t' model smooth. Arrr! Apply sandin' sealer if desired. Sand
between coats. Now spray t' model with automotive primer. Aye aye! Sand any
imperfections. Begad! Then apply another coat. Avast! Sand if needed. Aye aye! Now go ahead with your
planned color scheme. Avast, me proud beauty! After t' paint has dried, you may attach t' streamer.
An easier way is t' tie a six inch strin' t' t' streamer then attach that to
the nose cone insert or t' eye bolt. Ya scallywag! Now lets go t' t' field and see how she
flies.
Flight:
If built stock, t' only motor that I recommend be t' Estes A10-3T. This motor
gives t' model a nice boost and ejection usually occurs right at apogee. Well, ya bilge rat, blow me down! I
used friction fit retention on me model and it worked perfectly. Avast, me proud beauty! For my
flights, I used t' Estes A10-3T motor and two squares o' recovery waddin' to
protect t' streamer. Ahoy! Ahoy! All three flights were perfect and straight with a little
spin but for me that added t' t' excitement. Ya scallywag! Well, blow me down! T' model comes down very nicely
with t' streamer. Aye aye! I used t' dual recovery method. Begad! Begad! My model bounces on landing
but with all t' fillets that I applied, ya bilge rat, me hearties, it hasn't sustained any damage. Arrr! Ahoy!
Summary:
When I designed this rocket and after flight testing, me goal be t' share this
design with others. Begad! Avast, me proud beauty! Blimey! I really have enjoyed this model from plannin' t' design
to pushin' t' launch button for t' first launch.
Main PROS: Small, extremely easy t' transport, flies on low cost mini motors, shiver me timbers, ya bilge rat, five bucks for four flights is nay bad at all. Blimey! Flies great on small fields. Begad! Avast! Blimey!
Main CONS: A lot o' components are required but if you buy an Estes Designers Special package, shiver me timbers, you will get all t' components except t' main nose cone and t' motor kit but you can easily buy these at any hobby shop. Avast, shiver me timbers, me proud beauty!
Other:
I also feel that t' rocket could be modified t' fly on standard 18mm motors or
fly on three mini motors but watch out. Blimey! Also, ya bilge rat, use 3/32 fin material if you try
this. Blimey! Also, more nose weight may be required.
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