Cascade Ultralights Kasperwing

Discussion in 'The light stuff area' started by jedi, Nov 10, 2017.

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  1. Mar 23, 2018 #41

    Highflight

    Highflight

    Highflight

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    I agree, we have been waiting many years for the battery technology to provide the required power density equal to that of gasoline.
    If we install an electric motor now the batteries can be upgraded when they provide an improvement in performance, unfortunately it is an expensive
    option. The cost of an electric system is still prohibitive when compared to a conventional gas engine, it probably will remain so another five to ten years.
     
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  2. Mar 23, 2018 #42

    henryk

    henryk

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  3. Mar 26, 2018 #43

    Highflight

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    It is a very attractive, compact engine. I don't believe it has enough thrust to compete with our current Rotax 447, 503 and 583 engines, most of which are fitted with 62" (1575mm) props.
     
  4. Mar 26, 2018 #44

    henryk

    henryk

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    =40-60 HP engines seems to big for 1-place KASPERWING...

    =20 HP x >5 kG/HP (in "CR" mode ) => 100 kG thrust force =anoth for 160 kg K-W...?

    =by inserting styrofoam blocks into LE pocket we get better L/D (circa 20 %),
    no need in big thrust.
     
  5. Mar 27, 2018 #45

    Highflight

    Highflight

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    We have found the Rotax 447 to be the best engine for the Kasperwing single place, the single cylinder Zenoah did not have a long service, it worked too hard especially if a float system was installed.
    It also depends on how and where you fly, the extra power of the 447 allows for a spectacular take off and steep climb, all of our Kasperwings at Price Field (Camano Island) have at least a 440 engine installed.
     
  6. Mar 27, 2018 #46

    henryk

    henryk

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    -my be,but today tendency is to minimise power ("nanotrikes")

    http://hydronamic.free.fr/a/?page_id=163

    https://www.youtube.com/watch?v=zefHfQWPhTI
     
  7. Mar 28, 2018 #47

    Highflight

    Highflight

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    We fly in an area were 200ft per minute climb is not acceptable, Price Field is 1,500ft long with 15ft dikes on both ends, the landing field is below sea level. A long slow climb would be over water, not something I like to do if I can avoid it.
    The engines built today have a longer life span than the engines we had back in the old days, the small go kart engine we used would wear out in 25-50 hours of hard use. It wasn't uncommon for local pilots to make 100mile cross country trips requiring multiple fuel stops, the small engines didn't last many flying seasons of this type of use.
     
  8. Mar 28, 2018 #48

    henryk

    henryk

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    -is it any flying KASPWERWING with floats and with enclosed cabin (pod ?)

    https://encrypted-tbn0.gstatic.com/...KRfLFnVz4rC7YtgsrW7ZFSG4kAXZw5KtOWngC_rJCumMv

    http://www.vega-lotnie.eu/kasperwing/

    =bad,polish one...
     
  9. Mar 30, 2018 #49

    Highflight

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  10. Mar 30, 2018 #50

    henryk

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  11. Mar 30, 2018 #51

    Highflight

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  12. Apr 1, 2018 #52

    Highflight

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  13. Apr 2, 2018 #53

    henryk

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  14. Apr 6, 2018 #54

    Highflight

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    A powered clone of Manta Fledgling, not much, if any of the Kasperwing design. Steve Grossruck believed that the crash was caused by a flexing airframe or PIO.
     
  15. Apr 6, 2018 #55

    henryk

    henryk

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    -yes!

    =LE and rear spar was to weak (it is seen in taxi mode...)
     
  16. Apr 7, 2018 #56

    henryk

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  17. Apr 7, 2018 #57

    henryk

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  18. Apr 9, 2018 #58

    Highflight

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  19. Apr 9, 2018 #59

    henryk

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  20. May 10, 2018 #60

    henryk

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    Last edited: May 10, 2018

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