REFLECTOR: Triax which side is up?

[Andy Millin]

Andy,

You're probably already glassing...  I had wish I could get just 20 minutes
with my cores before I glassed them.  They are so easy to sand when it is
just the foam.  I could have save considerable time in the filling and
sanding if I had done a little bit with a long (4' or longer) sanding block.
I would recommend it if you haven't glassed yet.  Just a 1/16" her and there
can save a great deal of time and weight.

FWIW,

Andy
  -----Original Message-----
  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
Behalf Of Andrew Ellzey
  Sent: Sunday, October 02, 2005 10:25 AM
  To: Velocity Aircraft Owners and Builders list
  Subject: Re: REFLECTOR: Triax which side is up?


  That's my plans for today. I have my left wing core ready to glass all
shimmed and true on a true and level 4' X16' table that I built. My plans
are to lay plastic on top of my dry wing, lay out my triax and get it as
perfect as I can before anything has been wet out. I am also am thinking I
will pre cut it somewhat close to size when I am finished and carefully fold
the triax length wise no more than maybe twice and then lay it on the edge
of my table in front of my wing. When this is complete and I know that I
have a full day to start the final glassing, I then know that I won't be
rushed to straighten the squiggles when my wing is wet. See attached photo.

  Andy
    ----- Original Message -----
    From: Alex Balic
    To: 'Velocity Aircraft Owners and Builders list'
    Sent: Sunday, October 02, 2005 2:31 AM
    Subject: RE: REFLECTOR: Triax which side is up?


    I’m thinking Alan didn’t wan to spend the time to pull them all out- it
is very, very tedious, I did mine all dry- laid the glass on the cores and
pulled with rubber gloves and a set of pliers- you can put a lot of tension
on them, and I had little trouble pulling the slack out- just took a few
hours to do it- I was told that my triax was in “usual” condition as far as
the squiggles are concerned.   As far as if they matter- yes they do- the
triax is designed to be laid so the roving takes the tension loads of the
structure. If the roving is not straight, then the resin, and the  smaller
biax fibers end up doing  this job- as you can tell, the biax layer is much
less substantial then the roving- in filament winding structures like
pressure vessels, the roving is applied under quite a bit of tension to
obtain the proper strength of the bottle, and the same would apply to our
wings- even though the thickness of the glass on there is quite substantial
(can’t comment on the hollow wings since I am unfamiliar with their specific
construction)-



    -----Original Message-----
    From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Andrew Ellzey
    Sent: Saturday, October 01, 2005 11:44 PM
    To: Velocity Aircraft Owners and Builders list
    Subject: Re: REFLECTOR: Triax which side is up?



    Thanks, to everyone for all the help.



    Andy

      ----- Original Message -----

      From: Al Gietzen

      To: 'Velocity Aircraft Owners and Builders list'

      Sent: Saturday, October 01, 2005 6:27 PM

      Subject: RE: REFLECTOR: Triax which side is up?



          gently pull each strand of the triax to take out any slack and,
just like Alex said below, it adds to the tension and taughtness and forgive
me if I'm wrong he gents, but the strength of the entire wing as well



          It does seem that it make for a more rigid wing.  I have to hope
it doesn’t matter too much because anywhere I sanded through the primary and
filler on my ‘Wingco’ wings I saw nothing but squiggles.  Alan apparently
didn’t think it was an issue.



          Al


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