Estes - Bomarc (657) [1978-1980]
Contributed by Andy Hobbs (by Andy Hobbs)
Brief: Construction:
This build was simply a clone of the original Estes kit, so I didn't spend a lot of time researching details about the real Bomarc missile. I'll save that task for a more accurate example of one to be built in the near future. I ordered the Canadian decals from Jim Z The download includes a paint scheme for the USAF Bomarc for those who would prefer to build that version instead. I did not stray from the instructions, other than adding a length of Kevlar ® line to the base of the shock cord. I anchored the shock cord assembly to the engine mount. I did not attach the antennae. I felt they would be broken too easily. I have not made the two nacelle cones yet, but I plan to use a lathe or drill press to make them when I have the time to. For now the bomarc flys without them I got all my materials from the hobby shops and tubes from an internet source. The only problem I encountered was after I glued on the raceway, the yellow glue caused the rudder to pull to one side when it dried. I repaired this by using a hairdryer with a wooden block and a small clamp. I left the clamp on for a couple of days. Finishing: I tried to be sparce with the fillers and glues to keep things light. I used minimal primer and gave it a finish coat of Gloss white. I applied the water slide decals, but I am waiting to apply a sealer coat untill after I install and paint the Nacelle cones. Flight: I flew her on a Quest C6-3 off of a 1/8x3'" rod. She was a little squirrely and the launch rod velocity was borderline slow. The altitude was about 350' with a slow rotation during ascent.
Overall a fun couple of test flights The 18" parachute was more than ample for the soft field conditions.and she recovered both times without any damage. My suggestion to anyone who wants to clone this kit is to keep it light. Be sure to swing test your model! Don't fly it on anything less than a C6. The next time I build one of these I will install a 24mm motor mount. The Bomarc is a borderline stable model no matter how you build it, so be sure to check your cp/cg relationship. Summary: It's a good attention grabber with the young kids at the launch site (and with the big kids too).
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I downloaded the
plans for the#657 Bomarc from Jim Z's site,
Recovery:
