REFLECTOR: Triax which side is up?

Sun Oct 2 20:23:58 CDT 2005

I had the privilege to meet and talk to Dan Newland about a month ago when I was in Hong Kong on a business trip. Dan is a well know sale boat builder. He gave me a lot of good advice on preparing and finishing fiberglass. From his advice I started with a 24" sanding block then a 48" sanding block then a 6' and finished with a 10' sanding block. I assure you my wings are as close to perfect as I can get them. I also just spent 6 hrs today getting all the squiggles out of my triax. I wore the rubber off a pair of cotton rubberized gloves and got two blisters through my gloves on the hand I was holding my pliers with.

Andy
  ----- Original Message ----- 
  From: Andy Millin 
  To: Velocity Aircraft Owners and Builders list 
  Sent: Sunday, October 02, 2005 10:30 AM
  Subject: RE: REFLECTOR: Triax which side is up?

  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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