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Re: Europa-List: Re: Main wing bushings

Subject: Re: Europa-List: Re: Main wing bushings
From: Fred Klein <fklein@orcasonline.com>
Date: Mon, 24 Jan 2011 10:45:50

On Jan 24, 2011, at 4:34 AM, G-IANI wrote:

> In support of Bud and Pete=92s notes I can confirm that flexing of the 

> fuselage is important.  The LAA had considerable concerns that the  
> tail dragger conversion would stiffen the structure in such a way  
> that it could lead to overloading of the forward lift pin.

BINGO !!

This is one of those times when I truly value this forum...I've been  
following this thread w/ only mild interest...to this non-engineer's  
mind, the assumed function of the lift pins was primarily to set and  
maintain the wings' AOA.  But Ian's comment got my attention, and I  
have a newfound appreciation of all the posts leading up to it.

 =46rom the get go, I've been embedding components within my mono which  

would facilitate potential conversion to Bob Berube's tail dragger.  
I'd planned to add the recommended layups intended to transfer LG  
loads to the fuselage sides which have the effect of stiffening the  
sides of the fuselage. While I do not have the expertise to comment on  

the implications such layups may have on the loads ending up on the  
forward lift pins, I now will hold off on these layups...they can,  
after all, be easily added in the event the mono-ground handling  
proves troublesome...I may even get airborne a week earlier!

Fred


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