Colin Anderson Posted November 27, 2013 Share Posted November 27, 2013 I'm part way through building a built up wing for a Flair Piper Cub. I glued in all the outboard ribs and allowed to dry. At this stage the wing was completely flat. At this stage I removed the wing from the board, as I didn't want it damaged while I completed another task (I have limited space). Today I placed it back on the board to complete the gluing of the inboard ribs ( all half ribs). Prior to this I noticed that it had acquired a slight twist (about 1/8 of an inch). When I apply the top sheeting will this correct this washout if I glue it in place whilst pinned down flat or would I be better off steaming it out prior to sheeting? Quote Link to comment Share on other sites More sharing options...
GrahamC Posted November 27, 2013 Share Posted November 27, 2013 Hmm... its not a lot... Is it a consistent warp, or is it just a few ribs? Am I right in thinking that at present all you have is the ribs, spar, LE and TE? If that's the case, I might be inclined to try what you suggest, by pinning and sheeting it.... making sure you can get the pins out after you have completed the sheeting! You could try dampening the structure and pinning down to dry out before sheeting it. Quote Link to comment Share on other sites More sharing options...
Colin Anderson Posted November 27, 2013 Author Share Posted November 27, 2013 I'd say its a consistent warp. The wing at present is: leading edge, trailing edge and twin hardwood spars. The twin spars have webs front and back between ribs. The wing section is symmetrical. Quote Link to comment Share on other sites More sharing options...
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