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#11
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Yeah, those temps seem low (car parked in the sun?), but I'll work my way until I see some changes. There is also something called a heat deflection temp that is up closer to water boil but still well below melting point. That may be the one I'm after, when the shape is workable. Plastics. Last edited by Tramper Al : 03-03-2023 at 05:15 PM. |
#12
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Follow-up
Just a quick follow-up on my 1340 fin can straightening effort.
It all happened at 75 C (about 170 F), water bath, well clamped in Estes jig. I kept them in for about an hour at each (increasing) temperature, and let the last one cool down overnight. Straight and still like new. No kidding, these are the same fins. |
#13
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Wow. That's impressive!
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#14
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Great job!!
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#15
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+1 Well done!
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Bernard Cawley NAR 89040 L1 - Life Member SAM 0061 AMA 42160 KG7AIE |
#16
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Straighter than some fins I've seen come out of new Estes packages.
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#17
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That was too easy and results in a PENALTY.
Looks too good; at LEAST one fin needs a touch of WARPAGE. Paint the fin can with brushed-on Aero Gloss Dope. Thaty'll add some warpage back for sure . You needed to heat each fin individually with a heat gun instead. Seriously though, it came out better than expected. Looks great.
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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 ! |
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