Warbird Information Exchange

Has anyone run across any pictures or other information showing the riveting technique for attaching ribs to the tubular spar? In order to replace a rib, you must remove the attach bracket. Obviously splicing the aft portion is an option. But it leads me to ask how they built the thing. I am guessing they had a very substantial bar that ran through the entire tube, supported at each end. Then they would slide each rib, already riveted to the bracket, and then rivet that to the tube?

Seems logical but it sure would be useful to see some actual documentation.

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Rob C

Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. “

– Michael Crichton

I would assume it was some form of a large dia round bar slid through the the tube.
The trim spool casting would be the interesting roadblock.

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Rich Palmer

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Rob,

Can you post some pics of the tube?

PC

I am not equiped to do the photo thing. I searched using google and it was surprisingly difficult to find a picture. I will bet someone could put one up, or at least the drawing from the parts book. What I was hoping was someone might have a factory picture of the assembly phase.

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Rob C

Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. “

– Michael Crichton

Someone who was interviewing old timers about 30-40 years ago said that when he asked how you bucked rivets inside a tube, he was told "you need a mouse". The mouse was a rod with a pair of half balls on the end that could be pulled over a tapered section of the rod until they were expanded to fill the tube ID.