The Murphy Builders Site

Hi all,
Does anyone have any comments re the benefits/necessity for a doubler
around the slot in the bottom skin of the wing for the torque tube horn?
All comments appreciated.
Cheers Mike



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Hi all,
Thanks for all your comments. There is nothing in my manual about a
doubler. I had seen a couple when I built my wings and, thinking light and
being a bit of a smart arse (and a looong way from flying) when cutting the
slots I drilled a hole in the skin at each end of the proposed slot and,
using a dremel made one thin cut from hole to hole on the side of the slot
next the rib. This allowed me to bend the skin between the holes upwards 90
deg inside the wing forming a stiffening angle on the unsupported side of
the slot. What it didn't do was support the skin at each end of the slot.
I'll will decide whether to add a doubler now to be safe or wait and
see if it cracks and then add the doubler.
Has anyone experienced cracks about these slots? I don't think I've
heard of any.
Hope Oshkosh is good for those involved.
Cheers Mike



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Once again,
Thank you all for your comments, they are much appreciated.
Cheers Mike



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