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#21
06-19-2006, 01:09 PM
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This really should have been a "red flag" in the days when this model was designed... On the lighter all-balsa version, nose weight didn't correct the overall problem, even though it did allow the model to balance out with the heavier C6-7. That's the only reason you should add weight, BTW -- to compensate for the heavier motors. The only thing additional weight did on this model was to take the deployment velocities in the wrong direction. This is a fin shape / fin area issue. One thing I've learned, using RockSim, about model rocket aerodynamics is that the fin area is not the most critical value; but rather, how the fin interacts with the slipstream moving around the rocket. A smaller fin with an optimized shape will have a greater effect in correcting the flight path than will a large fin with little or no optimization.
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 
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#23
06-19-2006, 03:44 PM
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Hey, what can I say? I was excited.  Not a problem. I realize that mine were a stopgap. 
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Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2
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#25
06-20-2006, 02:14 PM
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Tim, Could you email these pics directly to plans@oldrocketplans.com? That way I can delete this post since all those files take up a fair amount of room. Thanks.
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Scott D. Hansen Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe! Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies! Ye Olde Rocket Forum WOOSH NAR Section #558
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#26
06-20-2006, 02:23 PM
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No problem.
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#28
06-20-2006, 10:29 PM
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Danke! Actually, the plans address I gave you goes to Buzz Nau who processes the files for me.
__________________
Scott D. Hansen Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe! Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies! Ye Olde Rocket Forum WOOSH NAR Section #558
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#29
06-29-2006, 01:11 AM
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The Screaming Eagle is restored to flight status. However, I refuse to launch the bird unless I can do it on the Powr Pad. I've been to every store within 20 miles of my house and nobody carries a 6v lantern battery for the pad. What stores have you guys been to in the last year that had one of the big 6v screw terminal batteries in stock?
I've found the critters for as low as $8 online, but shipping was way more than the price of the item. I'd rather put my hands on one than to order it if possible.   
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#30
06-29-2006, 01:21 AM
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None. I found a battery of the right size at Lowe's, but when I got home and tried to hook it up, I found that the posts were in different places relative to the holes. Let me know if you find one. I'm still in the market.
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Design Contest F-150 Hurricane Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2
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