Fred,
Back before my time when mod 52 was done for the GW increase. The classic
had two 3/8 pins originally. Mod 52 uses the =BD inch pins and a spar stra
p .
As the wings pull forward under load, the fuselage would flex so they put i
n the cross bar and the new sockets.
Then the concern was that the starboard wing spar could become dislodged fr
om the socket and interfere with controls. The quick fix was to hold in th
e spar tip with a pip pin. The port wing was figured would stay put, and t
he spar strap would prevent flexing of the spar.
That is all I know. Andy would have the particulars on the detailed histor
y. It sort of all makes sense.
Best Regards,
Bud Yerly
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Window
s 10
________________________________
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of Fred Klein <freddythek10@gmail.com>
Sent: Thursday, August 8, 2019 1:29:43 AM
Subject: Re: Europa-List: Reaming of spar and CM bushes
Bud=85you mention the use of the SouthCo pip pin on the port side and the A
llen bolt pin on starboard.
Do you know the reason for using different types of pins here?
Is there any downside to using SouthCo pip pins both port and starboard?=85
seems I=92ve heard that some builders have done so.
Fred
On Aug 7, 2019, at 8:35 PM, Bud Yerly <budyerly@msn.com<mailto:budyerly@msn
.com>> wrote:
The SouthCo pip pin is nominally .4985 inches.
The Allen bolt pin for the starboard side is .497 to .495.
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