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Old 11-12-2007, 10:00 AM
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My Design - 3rd Prototype PICS NOW UP!

Hey guys,
I have the airframe finished, and motor, ESC, aileron servo and rudder servo installed of my third prototype of my own design. First design was a little large for my liking, so I scaled it down to a smaller version, with a few little tweaks such as larger ailerons (to scale). That one seemed a bit small, and the wings somehow got warped. The small one was a tad heavier than what I really wanted too.

Needless to say, I am on my third version which has an inch bigger wingspan, 1 1/2" longer fuse, wing chord is same, as well as distance between the wings. Also used carbon in the wings of this instead of thread.

Finished airframe weight is 2.15 oz. With motor, ESC, aileron and rudder servo installed it weighs 3.65 oz. Threw a heavy Eflite S75 (actual servo will be almost half the weight), and battery, prop, o-ring for prop saver on the scale as well and the scale reads 4.75 oz. I am figuring I will be at 5 ounces after I add all of the pushrods and control horns. Real happy with the estimated weight considering my smaller version weighed 5.3 oz, and this one is bigger.

Will post pics as soon as I get home from work after school.

EDIT: PICS NOW POSTED FURTHER DOWN.

Seth
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Old 11-12-2007, 12:14 PM
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Sounds good Seth! Kudo's to you for actually trying things, then building another with what you've learned..... I see sooo many people who aren't willing to 'experiment' with their designs, and they end up frustrated, or flying suboptimal airplanes.

Post some pics when you're done....
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Old 11-13-2007, 06:31 PM
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For the size, I wouldn't get too crazy about chasing a weight number. Bipes float soo much better anyway that you dont really have to have a 4 oz plane.
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Old 11-13-2007, 06:56 PM
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GiantStyle Yapoleno Hucker!
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I don't think I agree with the idea of not worrying about weight, however, I do agree that I'd focus on aerodynamics before weight.

BTW, do you need that long gear to clear the prop, or is it there because you've seen it on other birds?
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Old 11-13-2007, 09:31 PM
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what is with no servo case's?
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Old 11-13-2007, 10:18 PM
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GiantStyle Yapoleno Hucker!
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<TABLE class=tborder id=comment553 style="CLEAR: both; MARGIN-BOTTOM: 3px" cellSpacing=1 cellPadding=3 width="100%" border=0><TBODY><TR><TD class=thead vAlign=top align=middle rowSpan=2> </TD><TD class=alt1 width="100%">what is with no servo case's?
</TD></TR></TBODY></TABLE>
Ever more attempts to drop more unnecessary weight : )
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Old 11-14-2007, 07:08 AM
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Actually, that was what was on my other bird - already shortened up to reduce more weight!Yup, servo cases are removed to reduce the weight even more!This one I may put drag plates on eventually. Will be a new drag plate design however that Wrong Way Jones came up with . . . top secret

Seth
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Old 11-17-2007, 08:46 PM
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Competition Airframes!
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YEE-HAW! should work just fine, if not better, as far as i can see. thanks for giving me credit for that!
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