Building Lasers

[Ken Thompson III]

Honestly Bob,

I don't believe even the most precise fliers could tell if their wing was off that little bit, or that most incedence meters can read it that close.
Unless you are doing your building off a surface plate, your chances of getting your fuse's thrust line "perfectly" level, so as to make your incedence's "that" close, are very slim indeed.  They will only be as close as the accuracy of your incedence meter.
I would like to have the manufacturer and part number of the incedence meter that is that good, I just don't think my Robart is that close.

Ken 
  ----- Original Message ----- 
  From: Bob Pastorello 
  To: discussion at nsrca.org 
  Sent: Sunday, October 24, 2004 8:35 AM
  Subject: Re: Building Lasers


  .1 degree is also just a shade over 1/32" difference EACH at the leading and trailing edges.  Understand that we need those kind of accuracies for best, but I believe most folks do NOT resolve incidence to 1/32"....but I understand the need to state precisely.

  Bob Pastorello
  rcaerobob at cox.net
  www.rcaerobats.net


    ----- Original Message ----- 
    From: Karl G. Mueller 
    To: discussion at nsrca.org 
    Sent: Saturday, October 23, 2004 10:06 PM
    Subject: Re: Building Lasers


    Bob,

    A tolerance of .1degrees is not very close to set the incidence.
    Over a wing root of 20" it works out to be .035 inch. This is the max.
    positive incidence I use on the wing when setting up a pattern plane 
    with the stab being set to zero.  A  .1 degree tolerance could give me 
    a setting between 0 and .070 positive when setting up a wing with 
    a 20" root.

    Karl G. Mueller
    kgamueller at rogers.com


      ----- Original Message ----- 
      From: Bob Pastorello 
      To: discussion at nsrca.org 
      Sent: Saturday, October 23, 2004 9:23 PM
      Subject: Re: Building Lasers


      The purpose of the ones I have is not to check incidence, but to verify alignment "square", and "parallel"...currently, a lot of folks use different methods, some height gauges, some fixtures.  When building a plane, I have always struggled with getting the stab square to the fin, and then the wing parallel to the stab...and these differences sure do make a difference in how a bird trims out.

      Incidence is checked with our electronic digital levels, at .1 degree accuracy :-)

      Bob Pastorello
      rcaerobob at cox.net
      www.rcaerobats.net


        ----- Original Message ----- 
        From: Evan H. Dygert 
        To: discussion at nsrca.org 
        Sent: Saturday, October 23, 2004 8:14 PM
        Subject: Re: Building Lasers


        This discussion is getting a little too technical. 
        Seriously though, being new to a lot of this, I would be 
        interested in more details about how to use these laser 
        thingys to check incidence. I am completely new to 
        incidence checking so this probably sounds like a stupid 
        request.

        On Sat, 23 Oct 2004 18:37:53 -0500
          "Bob Pastorello" <rcaerobob at cox.net> wrote:
        >Nope.  They're yellow, about 8" long, 3/4" thick, 2" 
        >tall.  Has a bubble level included that has an LED for 
        >use in dark, and the case has magnets built into the 
        >base.  They were in the tool aisle right by the rest of 
        >the laser thingys.
        >
        >Bob Pastorello
        >rcaerobob at cox.net
        >www.rcaerobats.net
        >
        >
        >  ----- Original Message ----- 
        >  From: Wayne Galligan 
        >  To: discussion at nsrca.org 
        >  Sent: Saturday, October 23, 2004 12:10 PM
        >  Subject: Re: [SPAM] Re: Building Lasers
        >
        >
        >  Bob,
        >
        >  Does this laser thingy have a couple of pins that push 
        >out to like secure it to a wall?   I got one of these for 
        >a gift and was wonderin if it was the same thingy or not. 
        >  Mine is about 3" high x 4" long x 1" wide.  
        >
        >  WG
        >
        >    ----- Original Message ----- 
        >    From: User211991 at aol.com 
        >    To: discussion at nsrca.org 
        >    Sent: Saturday, October 23, 2004 12:02 PM
        >    Subject: [SPAM] Re: Building Lasers
        >
        >
        >    Great idea Bob.. have a P/N or name on these gizmos ? 
        >Where in Wally World were they located ?
        >
        >    Brian 

        Evan H. Dygert
        Dygert Consulting, Inc.
        364 Twelve Oaks Dr.
        Winter Springs, FL 32708
        Tel: 407-739-8194
        Email: evand at dygertconsulting.com
        =====================================
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