Double Eagle Station 2 Crossbar

Discussion in 'Tube and Fabric' started by Chris In Marshfield, Nov 22, 2019.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Nov 22, 2019 #1

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA
    Hi all,

    Our UL flying club inherited a Double Eagle project. It’s in good shape, but we have a few things we need to update. Several of us are six feet tall, and the cross bar at station 2 hits us square in the knees (mine in the photo).


    We’re considering options on the best way to move the bar so we fit well. From the prints, you’ll see the original and a possible move I’ve considered. Any other possibilities you can think of?


    I suppose we could rebuild that tube section up front and move the joints around, but that’s a lotta work.

    Thanks for your thoughts,
    Chris
     
    FritzW likes this.
  2. Nov 22, 2019 #2

    TFF

    TFF

    TFF

    Well-Known Member

    Joined:
    Apr 28, 2010
    Messages:
    11,726
    Likes Received:
    3,320
    Location:
    Memphis, TN
    Move the tube forward, and from the present cluster, triangulate to it. I would personally put a finger patches on the cabane clusters.
     
  3. Nov 22, 2019 #3

    Rockiedog2

    Rockiedog2

    Rockiedog2

    Well-Known Member

    Joined:
    Dec 12, 2012
    Messages:
    2,311
    Likes Received:
    1,627
    LEU same way
    The engineers may not like my fix but it's been fine so far and it's right there so you can watch it if worried about it. I'm not. Moved the xmember up as necessary and added one forward.
     

    Attached Files:

  4. Nov 22, 2019 #4

    Rockiedog2

    Rockiedog2

    Rockiedog2

    Well-Known Member

    Joined:
    Dec 12, 2012
    Messages:
    2,311
    Likes Received:
    1,627
    Chris
    Has it had the gear moved fwd? Leonard put out a revision on that...w/o it may be nose heavy on the ground. Believe it was 6". Originally, when leveled the axle was directly below the leading edge IIRC
     
    Last edited: Nov 22, 2019
  5. Nov 22, 2019 #5

    Victor Bravo

    Victor Bravo

    Victor Bravo

    Well-Known Member

    Joined:
    Jul 30, 2014
    Messages:
    6,220
    Likes Received:
    5,026
    Location:
    KWHP, Los Angeles CA, USA
    Now that's a minimalist instrument panel :) How come you accepted the catastrophic extra weight penalty of a spiral wound spring instead of a straight piece of safety wire? :)
     
  6. Nov 22, 2019 #6

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA
    We have the plans for it, but it has the straight gear (which was built incorrectly). I was going to rebuild the gear to original specs, but if you suggest the updated gear, I'll present that option to the club.
     
  7. Nov 22, 2019 #7

    Kamcoman77

    Kamcoman77

    Kamcoman77

    Member

    Joined:
    Oct 31, 2018
    Messages:
    7
    Likes Received:
    9
    Location:
    Douglasville, Georgia
    Springs are high-tech anti-vibration system. As airplane hits turbulence, the pilot and instruments jump up and down or side to side in unison. Allows pilot to keep a keen eye on critical navigation parameters. Rubber bands would be lighter, but suffer from UV light degradation. What ???
     
    Rockiedog2 and BJC like this.
  8. Nov 22, 2019 #8

    Rockiedog2

    Rockiedog2

    Rockiedog2

    Well-Known Member

    Joined:
    Dec 12, 2012
    Messages:
    2,311
    Likes Received:
    1,627
    Suggest you ask a DE expert. Plenty on the Milholland designs list. Think it's Eagler's Nest. I was told Leonard is on the Eagler's facebook page now too.
     
  9. Nov 22, 2019 #9

    Rockiedog2

    Rockiedog2

    Rockiedog2

    Well-Known Member

    Joined:
    Dec 12, 2012
    Messages:
    2,311
    Likes Received:
    1,627
    Yes, that was a horrible decision to have to make.
    But a 45 swinging a 2# prop is a hard hitter and on a 237# EW will shake the guts outa those high $ gagues. So have to isolate from the a/f.
     
    Last edited: Nov 23, 2019
    Chris In Marshfield likes this.
  10. Nov 23, 2019 #10

    proppastie

    proppastie

    proppastie

    Well-Known Member

    Joined:
    Feb 19, 2012
    Messages:
    3,883
    Likes Received:
    1,133
    Location:
    NJ
    I see a ply floor. ....maybe offset the plywood,... remount the rudder pedals....minimal structure change?
     
    Chris In Marshfield likes this.
  11. Nov 23, 2019 #11

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA
    that’s an interesting approach. Hmmm
     
  12. Nov 23, 2019 #12

    FritzW

    FritzW

    FritzW

    Well-Known Member

    Joined:
    Jan 31, 2011
    Messages:
    3,718
    Likes Received:
    3,339
    Location:
    Las Cruces, NM
    Now that's my kind of panel! I hope you don't mind when I steal your idea for the Neirrh. ...maybe back up the zip ties (if the black things are zip ties) with a little safety wire so they can't do this.
     
    Rockiedog2 likes this.
  13. Nov 23, 2019 #13

    Victor Bravo

    Victor Bravo

    Victor Bravo

    Well-Known Member

    Joined:
    Jul 30, 2014
    Messages:
    6,220
    Likes Received:
    5,026
    Location:
    KWHP, Los Angeles CA, USA
    I think Chris' red lines on the plans are pretty good. These tubes can also be gusseted with thin steel sheet too if you want to be a boy scout.

    I believe you're looking at what will become the best Young Eagles ride-giving airplane ever :)
     
  14. Nov 23, 2019 #14

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA
    That’s one of the main reasons we got it. Also looking at a Rans S-12 as an option. But this one landed in our lap and it seemed like a good project to get the club started.
     
  15. Nov 23, 2019 #15

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA
    Thanks for the feedback so far. It’s going to be a fun project. Thankfully the plane is mostly done, so just a few small fixes here and there and we’ll be flying it in spring with luck. We do have one wing to recover, but need to find a warmer place or time to do it. Probably the most work out of everything. I’m not even going to show you the photo of the tailwheel, though...
     
  16. Nov 23, 2019 #16

    Rockiedog2

    Rockiedog2

    Rockiedog2

    Well-Known Member

    Joined:
    Dec 12, 2012
    Messages:
    2,311
    Likes Received:
    1,627
    Bet it’s heavy
     
  17. Nov 23, 2019 #17

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA
    That’s no lie :rolleyes:
     
  18. Nov 23, 2019 #18

    Rockiedog2

    Rockiedog2

    Rockiedog2

    Well-Known Member

    Joined:
    Dec 12, 2012
    Messages:
    2,311
    Likes Received:
    1,627
    Spruce has a pretty nice 4” full swivel. The mount is oversized and crude but I machined it down (with a hacksaw and file)
     
  19. Nov 23, 2019 #19

    proppastie

    proppastie

    proppastie

    Well-Known Member

    Joined:
    Feb 19, 2012
    Messages:
    3,883
    Likes Received:
    1,133
    Location:
    NJ
    Fishing pole tail-skid buy at Goodwill for as they ware down
     
  20. Nov 23, 2019 #20

    Chris In Marshfield

    Chris In Marshfield

    Chris In Marshfield

    Well-Known Member HBA Supporter

    Joined:
    Jan 29, 2008
    Messages:
    1,231
    Likes Received:
    1,010
    Location:
    Germantown, WI USA

Share This Page



arrow_white