Wittman v-witt flying experience

Discussion in 'General Experimental Aviation Questions' started by dougwanderson, Mar 19, 2018.

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  1. Mar 19, 2018 #1

    dougwanderson

    dougwanderson

    dougwanderson

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    Just received a set of plans from Aircraft Spruce and have some questions. Have any of you flown one? And are the flaps useful? the Cassutt and Sonerai do not have flaps. Any thoughts feedback would be appreciated.


    v flying.jpg
     

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  2. Mar 19, 2018 #2

    Raceair

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    My Cassutt experience with flaps in this configuration is that the flaps are a waste of time on a Cassutt. They do, however, make it easier to get in to the cockpit.
     
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  3. Mar 20, 2018 #3

    fmartin_gila

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    Slightly different operating parameters, but many years ago I owned a Stitts Playmate which has no flaps. Glide control is easier to accomplish with slips than flaps and somewhat less complicated to think about while in the critical timeframe of final.

    Fred
     
  4. Mar 20, 2018 #4

    Turd Ferguson

    Turd Ferguson

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    Are your intentions to build one? If I built a pylon racer / sport plane, this would be it.
     
  5. Mar 20, 2018 #5

    Little Scrapper

    Little Scrapper

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    There's a guy on Facebook building one, he's pretty far now. You may want to connect with him.
     
  6. Mar 20, 2018 #6

    cluttonfred

    cluttonfred

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    Personally, if a veteran racer and raceplane builder like Steve Wittman put flaps on it, I'd go with what he designed. Wittman's designs are very efficient and he would not have included flaps without a good reason.
     
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  7. Mar 20, 2018 #7

    wsimpso1

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    For me, it would boil down to two things: Do you need em? Can you afford the weight?

    On a one design racer like the V-Witt its wing loading may be so low that you do not need flaps for getting a slow enough approach for almost all airports. If you are trying to stay inside LSA rules, your stall speed clean has to be below a certain number, so flaps won't help with that.

    Flaps are heavier than just running the wing to the trailing edge. If you are close on that 1320 pound gross limit, this is a place where you can pare a couple pounds.

    My bird has high wing loading (21 pounds/ft^2) and I need flaps to have a reasonable approach and landing speed. YMMV.

    Billski
     
  8. Mar 20, 2018 #8

    Little Scrapper

    Little Scrapper

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    I'm assuming you've watched this? Before starting my Cassutt I did look in to building a V-witt. I'm a big fan of this airplane, the only reason why I decided to build a Cassutt instead was the large group of enthusiastic owners that surround the design was quite infections. They absolutely love flying Cassutts. But that's it, I think the V-witt is just awesome.

    It saddens me to see how the EAA has neglected the original. Every time I go to Oshkosh I sit next to it in display and eat lunch at least once. When nobody is looking I jump the rope to look inside.
    [video=youtube_share;H59k8kOuzHM]https://youtu.be/H59k8kOuzHM[/video]
     
  9. Mar 20, 2018 #9

    Hephaestus

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    The flaps might be more like a KR or long-ez too - more for speed control and approach angle...

    If Wittman drew them, and built them - and raced them... It probably needs them, if he drew them on the plans but omitted them on his own v-witt, well then you probably know it's something you can leave off as he wanted that 5lbs of advantage ;)
     
  10. Mar 20, 2018 #10

    Little Scrapper

    Little Scrapper

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    Steve's V-Witt at Oshkosh 1970. Not my photo.
    FB_IMG_1521563430120.jpg
     
  11. Mar 20, 2018 #11

    Tiger Tim

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    The video makes it look almost roomy in that cockpit.
     
  12. Mar 20, 2018 #12

    Little Scrapper

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    The following photos belong to V-Witt builder David Meyer. These are all I have which you may find useful when building. There's not many photos of a V-Witt available for support so it's really nice David has documented his build.
     
    Last edited: Mar 20, 2018
  13. Mar 20, 2018 #13

    Little Scrapper

    Little Scrapper

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    Looks like something went wrong. I'll try it again.

    FB_IMG_1521563502463.jpg

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    FB_IMG_1521565377307.jpg
     
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  14. Mar 20, 2018 #14

    BJC

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    For anyone who has not seen the method of attaching the butt of the spar to the fuselage, check out photo 5 (spar butt) and 8 (square tube just below the upper longeron that captures the spar.) The ultimate in KISS.


    BJC
     
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  15. Mar 20, 2018 #15

    Turd Ferguson

    Turd Ferguson

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    yeah, the wing spar is not bolted to the airplane, lol. That rattles a lot of people.

    The flaps / ailerons are typical Witt, torque tube in a torque tube so I don't think much weight could be saved by omitting the flaps, otoh, aluminum flaps and ailerons like some Tailwind builders could reduce overall weight.
     
  16. Mar 20, 2018 #16

    Turd Ferguson

    Turd Ferguson

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    Does he have a site or is this on facebook? I think that's the same DM I used to know, I worked on his Sonerai one time.
     
  17. Mar 20, 2018 #17

    dougwanderson

    dougwanderson

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    Not going for lsa and wing load is half your 21lbs. Weight savings is a plus but more to do with complexity vs effectiveness
     
  18. Mar 20, 2018 #18

    dougwanderson

    dougwanderson

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    trying to find a plane that can be aerobatic, economic (to build and operate), that I can fit in and fast. the v-witt fits the bill. If life allows yes it is my intentions. Just ordered a tig welder to do some more practices (tig vs gas i know)

    And great pictures thanks for sharing I will have to check out the facebook post.
    all the videos with the v witt I did not see flaps being used hard to tell tho.
     
    Last edited: Mar 20, 2018
  19. Mar 20, 2018 #19

    Raceair

    Raceair

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    It is not the same Dave.....One is is 'Myers' and the other is 'Meyer'
    You are probably thinking of Dave's red white and blue Sonerai #90 'Jitterbug'....
     
  20. Mar 21, 2018 #20

    Turd Ferguson

    Turd Ferguson

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    From Lafayette, La. Prior to the racing plane he had a Sonerai II he bought and wanted to modify for aerobatics.
     

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