Hi! Brian/William and all.
It may be that two questions are getting merged here.?
A) Williams original question seemed to me to be about the hard point
locations in the fuselage floor to which the flap drive cross tube and hinge
brackets are bolted. There were some kits (including mine No 337) which
needed hard points repositioned to ensure adequate metal clear round the
bolt holes but these were the tie cross tube and aft wing drag pin locators.
B) The Service Bulletin was about an issue of possibility of the flap drive
pin becoming disengaged from the flap drive cross tube. This bulletin called
for some serious measurements to be taken to ensure that (I think) a minimum
of 11mm of parallel diameter was still engaged in to the drive tube with the
flap deployed down.
Clearly the flap drive hinges need to be located correctly to satisfy the SB
mentioned above but they also need to engage with the hard points with
adequate hard points round the through bolts.
On G-PTAG when I rig the starboard wing unless the flap drive pin is
positioned dead in line when pushing the wing "home" to the fuselage it
refuses to enter and so forces the flap outboard to seriously foul up with
the aileron thus simulating the effect of what happened in flight in
Holland. ( In my case I hadn't noticed until I did full and free checks with
the control stick when the aileron refused to budge)
Needless to say this is now an item of particular inspection during rigging
and walk round preflight checks.
I'm sorry William I don't feel qualified to specifically answer your
original question.
Regards
Bob Harrison G-PTG
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Brian Davies
Sent: 02 January 2010 15:17
Subject: RE: Europa-List: Flap cross tube
Hi William,
The factory issued a mandatory SB16 in June 2008 (available on their
website) that specifies the maximum gap with the flap fully down so that
will be the limiting factor. I understood that with the flaps in the up
position you could expect a slight push of the flaps outboard.
Hope that helps,
Regards
Brian Davies
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of William Daniell
Sent: 02 January 2010 14:38
Subject: Europa-List: Flap cross tube
thanks graham for the deflection note.
Another question for the collective wisdom of group. The flap cross tube is
too far to the left such that the right hinge bracket has two holes off the
hard point (off the left edge) and the left slot is right on the left edge
of the left hard point. In order to get the hinge brackets onto the hard
point the rod would have to move right about 3/8 inch. I shaved 1/16 off
the rod to get it to fit between the flaps at full retraction without
pushing them out and currently the two bearings are right up against the
flap roots fully retracted but without pushing the flaps outboard.
I have tried full deflection and with the cross tube 3/8 to the right which
puts both hinge brackets on the hard points and there appears to be a lot of
of the flap root pin still to go on the left.
The manual is not specific about max clearance at fully retracted between
cross tube and flap root...it just says "small clearance". Is small 1/16
1/8 or 1/4?
So please can you tell me what the rough clearance is between your flap root
and the cross tube fully retracted so I can have an idea about the range of
possibilities.
Happy New year to everyone and thanks in advance.
Will
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