RE: Great Planes 25% Yak 81" 12-lb, seen on Fly3D Magazine  
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    • All Forums >> RC Airplanes >> 3D Flying! >> RE: Great Planes 25% Yak 81" 12-lb, seen on Fly3D Magazine
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    RE: Great Planes 25% Yak 81"... - 1/26/2008 8:20:52 AM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		Updates: I decided to go with a redundant A123 2300mAh for the receiver and an 1100mAh VPX pack (smaller A123 from Black & Decker) for the ignition. The giant scale guys talked me out of it. I've attached my wiring diagram. The old setup is first and the new one with the VPX pack is 2nd

    The B&D VPX pack is wired, wrapped and installed. Man this site is great! Couldn't have been easier. I think the B&D VPX's have to be the easiest A123's to go from the store to rx pack that you can make on your own? It literally took about 10 min to have it ready to install, and that's never converting one before. 2.9 oz with cardboard, shrink and wiring.

    The manual for the Fuji states their ignition uses 188 mAH. With a 1000 usable from the VPX, that's about 5 hours. Plus the charge time is so quick. I am running it through the Castle BEC at the default 5.1 volts. I only get 4.9 volts at the end of the connection, but the Fuji runs great. I called and asked Great Planes what the max voltage their ignition could handle and "through the operator", they stated 4.8v. I haven't found anyone trying more so I'll use the Castle BEC for now. I need to get the Castle Link so I can turn it up to 5.4v. The card is the only way to program it. Maybe pick one up at the WRAM show?

    I tested the system last night. I had to move the throttle servo off the firewall and back to the front receiver tray. The Fuji fired right up but my throttle servo was jumping all over. Scared the wife pretty good as she was holding it for me! It's ready for the next test. "Honey, you ready?"

    Brian

    OK: Throttle servo moved to the front receiver tray and it works like a charm.....

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    (in reply to Delrin)
           Post #: 801

    RE: Great Planes 25% Yak 81"... - 1/28/2008 4:49:54 PM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		Success! Maiden flight yesterday. 3 flights without a hitch, only 1 tank of fuel. Kept bringing her in to check her out. Good thing too. I found a missing servo horn screw that vibrated out on the elevator.

    CG is perfect. I'm right on the wing tube empty--5-5/8" back. Nose points down a little with full tank of fuel. Floats in on final like a dream. Didn't have the nerve to try the 3D rates on the first session with her. We've been flying of the ice on a local lake. Used the snowblower to make a 50' x 150' runway in to the prevailing winds. Sweet!

    Brian

    (in reply to Delrin)
           Post #: 802

    RE: Great Planes 25% Yak 81"... - 1/28/2008 5:05:43 PM   
    wind junkie



    Posts: 982
    Joined: 11/16/2002
    From: N. Syracuse, NY, USA
    Status: offline     		Good job Brian. You've got a sweet bird there.

    Let me know when you guys go out again.
    Joe

    _____________________________

    Arguing with an engineer is like wrestling a pig. Everyone gets dirty and the pig likes it.

    (in reply to Delrin)
           Post #: 803

    RE: Great Planes 25% Yak 81"... - 1/29/2008 2:51:53 PM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		Thanks Joe. Flew 3 flights again yesterday afternoon (Monday). Took it way up and tried the 3D rates. Wow! Very quick and not used to it at all. Hovers at about 1/2 - 2/3 stick. Sounds awesome. Rain today, but that usually makes the lake smoother once it refreezes. We'll keep you posted.

    Brian

    (in reply to wind junkie)
           Post #: 804

    RE: Great Planes 25% Yak 81"... - 1/31/2008 4:38:44 PM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		Ok. Finally got most of the graphics done. Installed the Graphtec landing gear and TBM CF Spinner & Prop. Only thing missing is the carbon tail wheel assy. and I'm completing that today. Here are a few pics.

    Brian

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    < Message edited by Delrin -- 1/31/2008 4:42:46 PM >

    (in reply to Delrin)
           Post #: 805

    RE: Great Planes 25% Yak 81"... - 2/17/2008 11:50:14 PM   
    FLYMIKE


     

    Posts: 570
    Joined: 6/20/2006
    From: WEST VALLEY, UT, USA
    Status: offline     		bump

    (in reply to Delrin)
           Post #: 806

    RE: Great Planes 25% Yak 81"... - 2/18/2008 5:31:00 PM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		Here's the lake in all her glory! Different runway conditions. Glare ice to windblown snow to snowblown runway.....

    Added some sponsor graphics to the yak too.....

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    (in reply to FLYMIKE)
           Post #: 807

    RE: Great Planes 25% Yak 81"... - 2/18/2008 10:49:57 PM   
    wind junkie



    Posts: 982
    Joined: 11/16/2002
    From: N. Syracuse, NY, USA
    Status: offline     		Aw shucks. Wish I could have been there.

    No green carpet this time I see.

    _____________________________

    Arguing with an engineer is like wrestling a pig. Everyone gets dirty and the pig likes it.

    (in reply to Delrin)
           Post #: 808

    RE: Great Planes 25% Yak 81"... - 2/18/2008 11:40:03 PM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		We'll be out there again. The snow in the sunny pics has all melted. By Wednesday morning, it will be a sheet of glass again. Epic conditions ensue.

    The green carpet is for special guests!

    (in reply to wind junkie)
           Post #: 809

    RE: Great Planes 25% Yak 81"... - 2/19/2008 4:06:07 AM   
    pappy35


     

    Posts: 363
    Joined: 10/30/2006
    From: Liberty Township, OH, USA
    Status: offline     		Hey Delrin. Where did you get those graphics?!? They look awesome and I'd love to get a set for my Yak.


    _____________________________

    Al

    (in reply to Delrin)
           Post #: 810

    RE: Great Planes 25% Yak 81"... - 2/19/2008 4:14:51 AM   
    Delrin



    Posts: 17
    Joined: 4/28/2007
    From: North Syracuse, NY, USA
    Status: offline     		I make them. I can make you a set for a very reasonable price. Let me know.

    Brian

    (in reply to pappy35)
           Post #: 811

    RE: Great Planes 25% Yak 81"... - 2/20/2008 6:01:49 AM   
    pappy35


     

    Posts: 363
    Joined: 10/30/2006
    From: Liberty Township, OH, USA
    Status: offline     		Delrin, sent you a PM.

    AL T


    _____________________________

    Al

    (in reply to Delrin)
           Post #: 812

    RE: Great Planes 25% Yak 81"... - 2/20/2008 3:39:13 PM   
    MIXMASTER



    Posts: 1380
    Joined: 3/29/2004
    From: williamstown, NJ, USA
    Status: offline     		Beautiful plane! I wouldnt want to fly it for a while, just look at it! You're no wus flying in those conditions too, I consider myself a hero if I fly when its 35 deg. & sunny, I stay home if the waters frozen. My friend let me maiden his Yak & one other flight, I was impressed with it, he had trouble with smooth landings, kept bouncing it, I told him you barely need any input to land it, it lands like its on auto-pilot.

    _____________________________

    Jimmy touch tail & I dont care!!!

    (in reply to Delrin)