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  1. S

    The big video topic

    Seem that 43013.5 is best choice - used on D18 is not exact, as it have filled cusp on bottom behind of leading edge. Am interresting if could be difficult to buil it as exact 43013.5. I think that D9 with 43013.5 and chord of 1.2m would be better than 23012 with 1.4m. Also Jodel wing too...
  2. S

    The big video topic

    I think You're partly wrong - D9 and D11 are using 23012, but later D18 is using 43013.5 Also some sources are probably misleading. Try to compare 23012 with airfoil written down of D11 drawing coords.
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    Where can I buy Asso X kit?.

    Marcos, KR2S and KR2 Super are two different planes, developed of KR2. KR2 Super plans are freely online. MC-100 is ALLCOMPOSITE and have some actual successor, which is not built by MC100 producer. Maybe also interresting could be SD2. Okoume/gabon could be replaced with birch.
  4. S

    Experimental Ducted Fan Aircraft Designs

    I know about effectivity of same diameter ducted fan against prop, but 1.7m ducted fan is difficult solution to build in UL, heavier, pricey. UL-39 used much higher power of motorcycle Suzuki R1 and BMW engines, than 100hp Rotax 912ULS.
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    Experimental Ducted Fan Aircraft Designs

    There was tested ducted fans many times, but it is very noisy and pricey solution - see Dusek and UL39, which is not suitable for homebuilts. You have to respect some noise limits.
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    Corby Starlet Airfoil

    I thought, that Corby Starlet is using 23012.
  7. S

    Where can I buy Asso X kit?.

    http://www.slittneraircraftplans.com/jewelx.html http://www.asso-aero.fr/Plans.php http://www.asso-aero.fr/Kits_et_pieces.php http://weeween.com/activityen.html Asso X Jewel plans aren't very accurate - friend is building it - had to correct many errors, improve solutions and materials. Also...
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    Pik-26 conclusion is near

    Andre, 3 PIK21 was built - OH-XTM first proto, stil flying; OH-XMR red one hit hole at landing, not repaired; OH-XME stil flyable. Two other are building - incl. Roger "PIK21".
  9. S

    Anyone have a GA37A315 file for solidworks?

    Please, share photo of page with GA37U-A315 coords - I like to compare. Thanks
  10. S

    Pik-26 conclusion is near

    Andre, if I want to choose of these older planes types, then Brugger Colibri, but with different airfoil than 23012. With experience around planes of this kind, will try build own plane inspired by PIK 21/26 and solutions of others. I like to know more about Walter's changes of centerplane and...
  11. S

    Anyone have a GA37A315 file for solidworks?

    Marc, could You share front page of 5th edition and coords of GA37U-A315 please ?
  12. S

    Pik-26 conclusion is near

    I like PIK26 and 21 more + studying SD1 and others - will build modified PIK version.
  13. S

    Anyone have a GA37A315 file for solidworks?

    Unfortunately picture of page with GA37U-A315, that I found, doesn't show year or edition. Marc, what version of airfoil is in Your 5th edition?
  14. S

    Anyone have a GA37A315 file for solidworks?

    Hello BJC, first time I found it in SD1 specs and in SD1 plans (without coords). Second time I found it on picture of H.Ribblet airfoils book - see my post 32.
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    Pik-26 conclusion is near

    Am thinking about building of bigger modified "PIK26" for whole VW 1700-1800ccm engine, 4.8-5m long, different thicker airfoil, separate flaps/ailerons, detachable wings - span cca 7m. Please, could You share Walter plans for studying?
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