honeycombing foam cores

[Eddie Batchelor]

To put what Matt said a different way :

Lets see now an ounce & a half doesn't sound like much. You double that (for
both wing halves) and you've got 90Grams which is only 10Grams from
100Grams. Now most people would say 10Grams is less than they can weigh. I
say get a better balance, (yes you weigh things in our denominations on a
balance - a scale is for cows). Now back to my point , 100Grams is 1/10th of
a KILO and we're only allowed 5 of them suckers (kilo that is). So 100Grams
is worth it but an ounce and a half (doubled) is not. Sounds fishy to me.!!

Eddie
(swlarcham on RCU)
www.perkinspharmacy.com
  -----Original Message-----
  From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On
Behalf Of Rcmaster199 at aol.com
  Sent: Thursday, November 11, 2004 8:23 PM
  To: discussion at nsrca.org
  Subject: Re: honeycombing foam cores


  An ounce and half taken twice doesn't sound like much but, as Tom sez,
makes the difference between legal and not. Considering what many have paid
to get an ES pipe or a carbon wing tube, to save a few ounces, saving that
same weight from the wings is a bargain.

  When you consider that an ounce and half from each foam panel represents
about 40% savings from each core, it takes on a diffrent meaning. Even when
each panel is finished, the savings will represent 10% of the finished
panel.

  Mike contact me off list please; there's some more info that might
interest you

  Matt


  In a message dated 11/11/2004 8:14:54 PM Eastern Standard Time,
kerlock at comcast.net writes:
    Thanks guys, all of you. I think I'll try out that hot knife thingy from
CST
    first, that sure sounds like a lot less trouble.

    And I usually build all balsa wings/tail, I am just about to mess with
some
    foam and I like options =) I'm not afraid to fill the garbage can with
    messed up parts. Err actually the floor, it gets to the can
    eventually....maybe like twice a year......

    Thanks guys,
    -Mike

    ----- Original Message -----
    From: "Koenig, Tom" <Tom.Koenig at actewagl.com.au>
    To: <discussion at nsrca.org>
    Sent: Thursday, November 11, 2004 7:05 PM
    Subject: RE: honeycombing foam cores



    And this can be the difference between legal and not legal!

    At our recent team trials, there was frantic activity just before the
first
    flights. It was quite disturbing( for the pilots!) to see so many planes
    needing an instant weight loss program. The pits were littered with
wheel
    pants, foam packing...batteries, spinners etc etc Anything that could go
was
    removed for those flights.

    Moral of the story...keep it light everywhere you can, even if it means
a
    honeycomb job!

    Tom

    -----Original Message-----
    From: discussion-request at nsrca.org
    [mailto:discussion-request at nsrca.org]On Behalf Of George Kennie
    Sent: Friday, 12 November 2004 8:33 AM
    To: discussion at nsrca.org
    Subject: Re: honeycombing foam cores


    The savings is about an ounce and a half per panel.

    Bill Glaze wrote:

    > All:
    > Since a completed wing panel, (Focus, Hydeout, etc). with servo,
    > linkage, Monokote covering, etc. will weigh, typically, less than 16
    > ounces, how much weight will be saved by honeycombing a raw foam wing
    > panel?  Will it be significant enough to notice in performance?  If
you
    > honey comb it enough to make a significant weight difference, will it
    > possibly weaken the panel leading to in-flight distortion, or possible
    > structural failure?  I know it's an individual opinion, but that is
what
    > I'm looking for here.  Thanks.
    > Bill Glaze
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