#1
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Estes CFS-20 & 40 Clear plastic
does anybody know what kind of plastic this was? polystyrene? The Estes catalog says use butyrate dope for gluing and filleting. What would the modern day equivalent plastic glue?
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"Old Rocketeer's don't die; they just go OOP".....unless you 3D print them. |
#2
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This was butyrate plastic! Essentially a sheet of clear dope.
I was very lucky, when shopping for repair materials for my Titan II, to find a model-plane-oriented hobby shop that had some sheets in stock. It is possible that SIG or a similar outfit still carries it. I used CA to attach the fins, and a slurry of melted down (in acetone) shards of the material for the fillet for the fillets.
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NAR #27085 - Oregon Rocketry - SAM |
#3
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Dope thinner is the best material to bond the fins when using Butyrate.
It literally welds the material.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#4
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Quote:
Yep, but the fins still popped off on landing.
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Hans "Chris" Michielssen Old/New NAR # 19086 SR www.oddlrockets.com www.modelrocketbuilding.blogspot.com http://www.nar.org/educational-reso...ing-techniques/ Your results may vary "Nose cones roll, be careful with that." Every spaceman needs a ray gun. Look out - I'm the Meister Shyster! |
#5
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I do not know if they still make these, but I used to make my clear fins out of the Protection
covers for welding masks. I could get 12- 4" x 2" protectors for $ 3.00 . these were throw away covers to keep the lens from get messed up. I could make 2 fins from each protector by cutting at an angle at center. I would make a wedge fin on my Saturn V, I used CA to attach the to the tubes for the Space Shuttle and the Titan III .
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Neal Miller Master Blaster NAR# 58296 |
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