-----
> So then I believe the new spar was found to be about 18% stronger than
the
> old one, so add 18% to the gross load? 1239# rated load? 1200 with
safety
> margin?
>
> ----- Original Message -----
> From: "Brian Kraut" <[email protected]>
> To: <[email protected]>
> Sent: Tuesday, December 09, 2003 7:49 PM
> Subject: Re: KR>questions - wafs / rims
>
>
> >
> > The net result of using a thicker wing and having the WAFs further apart
> is that there is less stress on them. If the center point of the lift on
> your wing was 10' from the WAFs and you were holding up 500 pounds of
plane
> on that one wing the torque would be 500 foot pounds. If your WAFs were
6"
> apart from each other you would have 1000 pounds of tension on the bottom
> WAF and 1000 pounds of compression on the top one. If you could increase
> the distance between them to 1' you would only have 500 pounds acting on
> each one.
> >
> >
> > Steve and Lori McGee wrote:
> >
> > On the new wing design with the stronger spars, because the wafs will be
> farther apart, does this this also create a higher rating in the wafs?
> >
> > I am pretty sure now I will be pushing the limit plus of the KR2S with
> this foam fused flyer, partially because lets see, the HS is larger, fuse
> both fore (4 inches) and aft (2 inches), and the wings are all larger than
> the kr2s plans. Having read in the archives that it is the wafs that were
> the weakest link, ( especially now with the larger spar). I would not
worry
> about the extra weight if I could get the wafs that much stronger. I
> thought about increasing their thickness, but have been wondering what
the
> added spacing does.
> >
> > I guess I am also going to have to bite the bullet on those dang wheels
> with a heavier plane. Any of you heavy S guys using those Asuza rims?
> >
> > Any suggestions?
> >
> > Steve McGee
> > Endeavor Wi. USA
> > Building a KR2S widened.
> >
> >
> >
> >
> >
> > _______________________________________________
> > see KRnet list details at http://www.krnet.org/instructions.html
> >
> >
>
