REFLECTOR: Fw: Winglet Trailing edge trimming

[Matt Bucko]

Consternation has turned to lucidation...... or something like that.
Andrew, your email caused me to re-read the manual... again, for the 10th
time.  I was misreading.   Figure 2-17 is for an UNFINISHED foam core.  My
cores are finished.  Sorry for being an idiot.
Section 2.2.4, winglet trimming is where I needed to be, not 1 page back
looking at the wrong measurements.

Matt-
  -----Original Message-----
  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
Behalf Of Andrew Ellzey
  Sent: Monday, November 26, 2007 4:58 PM
  To: Velocity Aircraft Owners and Builders list
  Subject: REFLECTOR: Fw: Winglet Trailing edge trimming


  Matt,

  I tried to send a picture of this and it was too large for the reflector.
If it comes through, this is a better explanation than I sent in the first
attempt from an old response to another builder. As you can see this was
another builder that had the same issue.

  Andy Ellzey


  ----- Original Message -----
  From: Andrew Ellzey
  To: Velocity Aircraft Owners and Builders list
  Sent: Monday, July 31, 2006 6:28 AM
  Subject: Re: REFLECTOR: Winglet Trailing edge trimming


  Jack,

  I am also building my wings and winglets. I had the same issue as you are
talking about. Put your winglet back in the billet half that matches the
inboard side of the winglet. Mark the lines on the billet half, the 28" mark
will fall on the billet half and the 12" will fall on your winglet. Now mark
the 1" foam trim line on your winglet per the manual. This line will fall
entirely on your winglet. Sand your billet half to match the contour of the
trailing edge where the line comes off the foam of the winglet. Line you
billet half with plastic to make a mold half for your lay-up. Do your
inboard lay-up per the manual leaving enough cloth for the entire size per
the manual. When you put your winglet in your billet half it will form your
trailing edge for the correct 28". After it cures you will trim the foam
back the 1" on your winglet per manual, and this line will fall on the foam.
The manual also doesn't tell you what to do with the top of the winglet,
leave it squared off like it came out of the billet or round it off. I
rounded mine off to a nice aerodynamic shape. If you have room to attach
your wings to the spar when you are ready to attach your winglets, as the
manual suggests, this is the best way to make sure your winglets and wings
are completely matched. Make all of the cross check measurements the manual
calls for. I used a water level at the wing tips to level both wings
attached to the spar. I spent 2 full days getting everything just right, I'm
hoping this will payoff in how my aircraft flies.

  Happy building,

  Andy
    ----- Original Message -----
    From: Jack Prock
    To: reflector at tvbf.org
    Sent: Sunday, July 30, 2006 4:36 PM
    Subject: REFLECTOR: Winglet Trailing edge trimming


    Hi,

    I am in the process of setting up the winglets for glassing. I am trying
to trim
    the trailing edge according to the manual, but my winglets don't seem to
match
    what the manual is saying. Or I am reading it incorrectly.

    The manual says to measure on the top of the winglet 12" and then on the
bottom
    of the winglet 28" and draw a line. The problem is that my winglet taken
directly
    from the winglet foam billet does not reach 28".  I don't know what to
do. Do I
    draw a line to the 28" line that is approx. 3/4 of an inch behind
trailing edge foam?

    Or am I measuring wrong. I am starting at the leading edge point, and
measuring
    across the bottom (the actual bottom...that would be facing the ground
when
    the winglet is installed).  Does the manual mean to say to measure
across the
    bottom of the inboard face of the winglet? This would add inches, since
the curvature of the
    winglet would add to the distance.

    Help

    Jack Prock


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