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