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Thread: Seagull Yak?


  1. #1526

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    RE: Seagull Yak?


    ORIGINAL: Sourkraut

    Sorry for your loss.....mine is still flying great. I am into my second season with her and the Saito 180 is a puuuurrrrffffect match for this airframe.
    Did you beef up your airframe or use different hinges? Thanks Capt,n
    Imagination is far more important than knowledge. Albert Einstein.

    http://www.lambertsrc.com/

  2. #1527
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    RE: Seagull Yak?


    ORIGINAL: captinjohn


    ORIGINAL: Sourkraut

    Sorry for your loss.....mine is still flying great. I am into my second season with her and the Saito 180 is a puuuurrrrffffect match for this airframe.
    Did you beef up your airframe or use different hinges?Β*Β* ThanksΒ*Β* Capt,n

    Yes the 150 will be fine....mine has gobs of power with the 180
    Confuscious says: Woman who flies plane upside down will have crack up!!

    CG Tiger 60 Flyer #72

  3. #1528
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    RE: Seagull Yak?


    ORIGINAL: captinjohn


    ORIGINAL: Sourkraut

    Sorry for your loss.....mine is still flying great. I am into my second season with her and the Saito 180 is a puuuurrrrffffect match for this airframe.
    Did you beef up your airframe or use different hinges?Β*Β* ThanksΒ*Β* Capt,n

    Yes, I beefed up the landing gear plate and the firewall with tristock/epoxy wherever I thought it needed it.
    Still using the stock CA hinges and still holding in there BUT if I was putting another together I would probably go with Robarts or Dubro pinned hinges just because some others have been having trouble with the stock CA hinges.
    Confuscious says: Woman who flies plane upside down will have crack up!!

    CG Tiger 60 Flyer #72

  4. #1529

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    RE: Seagull Yak?

    SourKruat...thanks for the good advice. Capt,n
    Imagination is far more important than knowledge. Albert Einstein.

    http://www.lambertsrc.com/

  5. #1530

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    RE: Seagull Yak?

    Hey everyone. I picked up one of these on a trade with a Zenoah G20...It doesn't have a spinner on it does anyone have the recommended spinner size for this? let me know.

  6. #1531

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    RE: Seagull Yak?

    ORIGINAL: badazzgti03

    Hey everyone. I picked up one of these on a trade with a Zenoah G20...It doesn't have a spinner on it does anyone have the recommended spinner size for this? let me know.

    spinner size is 2.75
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    Jerry

  7. #1532

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    RE: Seagull Yak?

    Awesome!!! thanks so much Jerry!

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    RE: Seagull Yak?

    Does anybody here sell a spare set of tail feathers for the black/yellow version?

  9. #1534
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    RE: Seagull Yak?

    This thread is being inactive fir 3+ months, I have 7 acrobatics planes and this is my preferred by far. I have the yellow/black version with a TT 120
    Keep your wings level
    Club Saito Member #693

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    RE: Seagull Yak?

    I had mine sitting around and just about finished.
    Hope we can start flying soon here, we had enough snow for the year..

    Where do you have your CG? I know there were some issues and going by the manual will turn out to be tail heavy.

    I have a 20cc gasser on mine, hope that's enough power

  11. #1536
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    RE: Seagull Yak?

    Its very tail heavy, the manual doesn't help a lot. Ill have to measure mine and get back to you.
    When I was flying her w the Saito 100 I had to add a lot of weight to the cowling,
    Yes a 20cc is plenty. I have a friend flying her on a 20cc and she is fast
    Keep your wings level
    Club Saito Member #693

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    RE: Seagull Yak?

    I have my CG close to the wing tube.
    And I have another Yak and a 1.20 Magnum FS sitting around.
    Not sure if i should build it or keep it for spares...

  13. #1538
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    RE: Seagull Yak?


    ORIGINAL: OliverJacob

    >Where do you have your CG?

    My YAK balances spot on at 5 1/4 inches back of the leading edge at the wing root .... the manual is/was wrong.
    Confuscious says: Woman who flies plane upside down will have crack up!!

    CG Tiger 60 Flyer #72

  14. #1539
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    RE: Seagull Yak?

    I just checked mine, 5 inches from the leading edge at the root.
    Keep your wings level
    Club Saito Member #693

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    RE: Seagull Yak?

    Check with Horizon for parts.
    My balances dead on the wing tube with a ST 90 & battery (a123, 3000mh) up front under the cowl.
    Best Regards
    Ed

  16. #1541

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    RE: Seagull Yak?

    Thanks,

    the suggested CG just didn't look right, it should be close to the wing tube.
    I have ignition and receiver batteries right behind the wing tube, but the gas engine is a little heavier and the ignition box is right behind the firewall

  17. #1542

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    RE: Seagull Yak?

    The manual CG is off as I believe the correction notice on the Horizon web site. I think in the beginning of this thread there is a photo of someone who crashed on their maiden, likely due to their CG. Haven't flown this plane in years, but it was one of my favorites, although mine really pulled to the gear in knife edge.

  18. #1543

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    RE: Seagull Yak?

    I have just started my Seagull Yak-54 and I have a question for those who have in stalled the zenoah G-20 .Since this model comes out tail heavy  most of the time and from posts I have read that the G20 is mount directly to the firewal with no stand-offs l,why hasn't anyone used stand off's and move the engine forward? The manual states engine mount distance of  140mm or 5.5"  from  Firewall to prop hub.The   G20 length   is 4.70 for the correct position of a G20 you should have a stand-off of .800"

    The reason I' m asking is because I have a J-Tec pitts style  muffler for the G20 and I would like to use it,if I use Hangar 9 Taylorcraft  G20cc
    stand-off 's  which are 1.080" long this plus the engine length comes out to 5.82" .320" further forward  of manual recommendation I don't see  a problem doing this,did I miss something I welcome you input and advice. Thanks and Cheers: Rich

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    RE: Seagull Yak?

    I have an Aerovate 20cc, made my own stand offs. The engine is right where the manual wants it to be, but there's no problem
    changing the stand off length.
    Mine came out almost perfect. I use 2 light batteries (LiFe) and just moving them would be enough to get the CG right.
    I think your Zenoah might be a little heavier then mine, you shouldn't have to move it forward.



  20. #1545

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    RE: Seagull Yak?

    OliverJacob,

    Thanks for your reply, I need the extra length on the stand-offs for the J-tec muffle. If I made .800" stand-offs it would be to tight and the muffle would rub against  the firewall, the 1.080 stand-off  are just about perfect and I paid  $8.59 for them at the LHS.thanks for your input. Cheers: Rich

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    RE: Seagull Yak?

    I had the same problem, I changed the stock muffler to a pitts style and since everything else was perfect I decided to
    modify the firewall instead using different stand offs. Then I strengthened the box from the inside, came out very nice.

  22. #1547

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    RE: Seagull Yak?


    ORIGINAL: proteus_X3

    I have just started my Seagull Yak-54 and I have a question for those who have in stalled the zenoah G-20 .Since this model comes out tail heavy most of the time and from posts I have read that the G20 is mount directly to the firewal with no stand-offs l,why hasn't anyone used stand off's and move the engine forward? The manual states engine mount distance of 140mm or 5.5" from Firewall to prop hub.The G20length is 4.70 for the correct position of a G20 you should have a stand-off of .800"
    The reason I' m asking is because I have a J-Tec pitts style muffler for the G20 and I would like to use it,if I useHangar 9 Taylorcraft G20cc
    stand-off 's which are 1.080" long this plus the enginelength comes out to 5.82" .320"furtherforwardof manual recommendation Idon'tsee a problem doing this,did I miss something I welcome you input and advice. Thanks and Cheers: Rich
    I flew the G20 on mine. I used short standoffs to position the prop where it is called for. No balance issues; mine flew best balanced just behind te wing tube.

    Sometimes, things are exactly as they appear to be.

  23. #1548

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    RE: Seagull Yak?


    ORIGINAL: RCVFR


    I flew the G20 on mine. I used short standoffs to position the prop where it is called for. No balance issues; mine flew best balanced just behind te wing tube.

    RCVFR,
    Thanks, so your CG is 5.5" from leading edge of the wing? BTW I like your name,you a pilot? RCVFR Radio controled visual flight rulesCheers: Rich[/i]

  24. #1549

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    RE: Seagull Yak?

    i had this plane, it was a beauty, i put an os 35 cc nitro engine, and it destroyed the airframe in 5 flights time, she fell apart during flight, fell from the sky like a raggady ann doll.  i replaced it with a GP Yak 54 and using the 35 cc nitro engine, she has had about 20 flights, but the seagull Yak black and yellow was a much nicer looking plane.  enjoy the plane guys, do not put anything bigger than 20 cc.  reason i am telling you all this is so that no one else makes the mistake i made.
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  25. #1550

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    RE: Seagull Yak?


    ORIGINAL: OliverJacob

    I had the same problem, I changed the stock muffler to a pitts style and since everything else was perfect I decided to
    modify the firewall instead using different stand offs. Then I strengthened the box from the inside, came out very nice.
    Jacob,
    Iconsider that option....But the older I get the lazer I get,patch least resistance and all that ,moving the engine fwd on a know tail heavy plane seems logical with little on the down side. I'm only using a single 6.6v 3000mah Life battery with a UBEC for the ignition modual.The ignition modul has been replaced with RCexl modual so I can run it unregulated if I want.




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