Elevator to Fin post interference SR-3500

[Wayne G. O'Shea]

Hello again! Just want to clarify my message from yesterday. It's not the
strap that interferes, it is the inboard elevator ribs that are tight
against the spar caps on each side (like your legs wrapped around a horse!)
that are keeping it from moving. I spent about 4 hours today putting my
elevator and stab onto the fuselage to sort things out and see if it was
just a QB fluke in Chilliwack or effecting the entire fleet. Considering I
am working on Serial #17 I would now guess the whole fleet. The combination
of the extra .080" that the hinges are moved rearward on the stab after the
3500 upgrade and the additional .063 per side on the spar caps (old ones
where .032 x 2, new ones .063 x 2) has apparently taken any clearance away.
I still think even the 2500's out there must be awfully close.

**UPLOADED PICTURE TO THE SITE FILES OF THE "CONTACT".**

At this point the current, but still UNOFFICIAL fix is to cut out the spar
caps (as shown in the pics I uploaded yesterday) and then add .063 angle to
the rear side of the post to put the strength back, on completed airframes.

I had another thought today that it would be very easy for someone that
hasn't finished off their elevator upgrades yet. That is to trim the
elevator skin back on the inboard ribs enough to remove the existing rivet
holes. Then install the upgrade ribs the approximate 1/2" further outboard
than they were before. This will give lots of clearance and I am thinking of
taking this route even though my elevator is totally closed.

I am in daily contact with Brian on this one so don't everyone bombard him
with extra e-mail that will just slow him down with the final fix. I will
pass on the final verdict, when I have it from MAM, for all of you to read
here.

I wouldn't do anything at this point guys/gals and would work on something
else until the final decisions are made. Just don't want anyone that is
ready to close these things up to proceed and then have to tear them apart
again.

Cheers,
Wayne G. O'Shea
www.irishfield.on.ca





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