net@list.krnet.org
Date: 02/09/05 08:26:36
To: gle...@rtconnect.net
Subject: Re: KR> Spar questions
B. Ferguson wrote:
> Hello,
>
> With this discussion on spar strength I was curious to know if any of
> the techniques discussed, along with the extra thickness of the 5048
> a
Nice work Oscar.
One thing most people miss in the analysis, however, is the variability
of the materials. Wood can be 50 percent (or more) stronger than the
published low limit. So, we need to test the actual parts to be used,
or allow a reasonable safety factor for the material variability.
T
`Standard K R 2 Spar WILL NOT take longer outboard wings and
still meet specs, Virg
On Tue, 08 Feb 2005 19:10:28 -0600 "B. Ferguson"
writes:
> Hello,
>
> With this discussion on spar strength I was curious to know if any
> of
> the techniques discussed, along with the extra thickness
>But again, RR is emphatic about using the -1B wings on the -2 or -2S.
This much I am aware of from the 1B posts Mark L. stirred up a few days
before Christmas. Read as much as possible on the 1B in the archives.
The question would be was this analysis for the original spars in the
old airfoil? T
B. Ferguson wrote:
> This much I am aware of from the 1B posts Mark L. stirred up a few days
> before Christmas. Read as much as possible on the 1B in the archives.
> The question would be was this analysis for the original spars in the
> old airfoil?
It would certainly be for the original spars
Hello,
With this discussion on spar strength I was curious to know if any of
the techniques discussed, along with the extra thickness of the 5048
airfoil, would add enough strength to the center section to allow for
fitting of the 1-B wings? Adding a large amount to the span would no
doubtedly l
B. Ferguson wrote:
> Hello,
>
> With this discussion on spar strength I was curious to know if any of
> the techniques discussed, along with the extra thickness of the 5048
> airfoil, would add enough strength to the center section to allow for
> fitting of the 1-B wings? Adding a large amount to
Steve wrote-
>I would destruction test a pair of spars if I had the capability. I don't
>have any way of putting 4500 pounds of pressure on anything, much less
>getting the load distributed right.
Why test a pair of spars? One will do. And as far as a test setup and
apparatus, check out http:/
Oscar Zuniga wrote:
>
> Why test a pair of spars? One will do.
One stock, one laminated. Gotta have a control :)
> And as far as a test setup
> and apparatus, check out
> http://www.flysquirrel.net/wing/spartest.html and see if you can
> duplicate the high-tech test setup detailed there... PS; I
You can also test a scale model of a spar and obtain good results. Stan Hall
discussed the methodology for this in an early Sport Aviation article, two
actually.
Denny ...
Oscar Zuniga wrote:
Steve wrote-
>I would destruction test a pair of spars if I had the capability. I don't
>have any way
Hi All,
Wow I've had a big day
I got about 10 hours done on my 2S.
Horizontal stab glassed on the top, Spars fitted and ready for gluing, it's
amazing how much time can be spent checking and double checking for level.
Cockpit floor made and ready to glue in once I establish where my rudder p
Gavin,
1 layer of glass is good. If you overlap the top around to the bottom about
2 inches and the bottom around to the top, about 2 inches, you will have 2
layers on the leading edge which is good.
Search the archives on this sealer topic. You will find that the favorite is
to use resin, thinn
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