Craig
I guess I don't understand the logic behind this setup. As I
understand, the pip pin is there to prevent aft movement of the spars.
So why is the pin only used on the port side and not the starboard
side?
Later on we bond a hardened steel washer to the port socket to retain
the pip pin ball. This sounds structural to me, but I know the socket
is nonstructural, so I am obviously missing something here.
On Tue, Sep 3, 2013 at 4:50 AM, craig <craigb@onthenet.com.au> wrote:
>
> I believe the only reason for opening the hole to 1 inch is so it's a neat
> fit over the bushing in the spar itself
> That socket is the one with the pip pin installed in it which is supposed to
> be packed with washers so the pin doesn't move around guess the logic is you
> would just have to pack the pin more if you remove both sides out to one
> inch, as you say, though the consensus is that these pins are not
> transmitting any lift load, however before the strap around the spars was
> added, the pip pin would be stopping the end of the starboard spar moving
> rearward under those high lift high drag scenarios that were discussed at
> length a month or so ago by everyone when the wing is trying to move
> forward, which is why I believe the tie bar was added. So this may be one of
> those things that hasn't changed because it doesn't really effect anything
> in a bad way if its not altered. So you could probably remove it if you want
> to, the manual is quite clear the sockets are NOT structural, just a rigging
> aid to help you get the wings on. Feel free to correct me Bud if I got this
> all wrong
>
> Regards
>
> craig
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of Andrew Sarangan
> Sent: Tuesday, September 03, 2013 1:38 PM
> To: Europa List
> Subject: Europa-List: Spar socket hole enlargement
>
>
> The manual says to open up the port spar socket hole to 1" on one side
> only, presumably the side facing the seatback. So why not the other
> side? If the sockets are non structural, it would seem odd to sandwich
> its plate between the bolt head and the spar bushing. What am I
> missing here?
>
>
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