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1923 B3 'Charlotte II' in 1:3 Scale

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  • I saw a short video clip on someones Flickr account of the initial tow and I thought I saw something flutter. So sorry to hear of the unfortunate event. She sure was a beauty. I have no doubt that time will see you return to it.
    Member In Good Standing - "Builds Slower Than A Dead Turtle Nailed To A Fencepost" Club

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    • Michael,

      Very sorry to hear of Charlotte's demise, it was truly a work of art. Don't beat yourself up too badly about the CG. Plank type wings are notoriously sensitive and 20/20 hindsight is always perfect! It's loss does nothing to diminish the talent in design and craftsmanship you exhibited in creating it. I look forward to your next project and hope to see you next Spring at SERA.

      Best Wishes,

      Tom McP.

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      • It was a great piece of work as always, we discussed it on the way home yesterday and maybe Jelly will build a smaller scale version. In the mean time he is staying focused by building his ASW 20 for it's maiden at Clover Creek...............back in the saddle my boy

        Jeremy and Ben
        SCCAAA TT TN

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        • Sorry to hear about the madien Michael, I hope you decide to rebuild it!

          Jason

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          • What a pity! I'm very sorry after so many effort.
            I checked the CG of my own Charlotte II. CG is at 15,6% of the mean chord. This means that the static margin is 9%. This is not unusual for a flying wing. Coming back to 25%on yours may not be the solution according to me.
            Are you sure CG is really the problem ? I reinstate that mine at several issues at the time of her maiden flight among them lack of response on yaw axis and roll axis. I increased aileron angular displacement to +-45% instead of +-30° and combined aileron and elevator in order to improve roll reactivity. Then I modified the vertical fin in order to make it steerable.
            And everything changed then.
            Without a video it may be difficult to diagnose what went wrong to your Charlotte. Do you have any video ?
            I hope you will rebuild her and try again. Good luck.
             

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            • A second link with a video after all modifications presented here above are implemented. Everything changed.
               

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              • Greetings!
                I registered here just to let ARUP know that I was only here about 2 minutes before I fell hopelessly in love.
                What craftsmanship!

                I have been dreaming about trying to build those kind of wing ribs since I first learned of them, some 40 years ago.
                To my eye, there is something quite beautiful about intricate skeletal structures.
                Especially those that fly.

                Back in the day, I couldn't even bring myself to cover some of my finished builds.
                But with the clear & semi-clear coverings now, it's a whole new ball game for my particular....perversion.

                I predict I am going to be peeping around here for quite some time!

                Post Script: I am preparing to build a couple of cheap little vintage Balsa kits (Carl Goldberg Electra Deluxe & Mirage 550) that I built as a very young man & recently reacquired, but nothing like the complex masterpieces I see here!
                I'm in the Sistine Chapel, just paintin'-by-numbers!
                Last edited by Boondawg; 01-27-2018, 05:04 AM.

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                • Boondawg, please visit often! It is a fiendish plot of mine (and possibly others here?) to convert you (and others) into a scale sailplane builder! Once you've experienced the poetry of scale aerotowing and scale thermal flight you will almost forget about everything else! If you have any questions about any building techniques shown please feel free to ask! Thanks so very much for visiting here. I appreciate it very much!

                  PS- even Michelangelo di Lodovico Buonarroti Simoni had to start somewhere! Keep 'paintin'-by-numbers' until you can make your own canvas and paint! It'll happen with experience.

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                  • Originally posted by ARUP View Post
                    Boondawg, please visit often! It is a fiendish plot of mine (and possibly others here?) to convert you (and others) into a scale sailplane builder! Thanks so very much for visiting here. I appreciate it very much!
                    Thanx, but I foresee the pleasure being all mine!
                    I'm alreadyschemingdreaming !

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