I had this discussion with our PFA engineers in UK, and they told me that any unwanted blank holes in the spar should be plugged with a bolt shank. The theory being that a wooden dowel could compress and weaken the spar..
Long time agooo! Regards to all , Mac On Tue, Jan 26, 2016 at 12:13 AM, Dave Acklam via KRnet < krnet at list.krnet.org> wrote: > Thanks for all the replies.... > > I now get what everyone means by 'shear joint', and that one should NOT > weld anything unless you want to go through a whole hell-of-a-lot of extra > work fixing the metallurgy of the resulting part. > > So far, the choices everyone has posted seem to boil down to: > > 1) Make new WAFs for one side using same-thickness strips of 4130, using > the old ones as a template, then drill the main bolt-hole for the > pin/attach-bolt based on where everything lines up. > > 2) Move the WAFs around on the spar, using dowels to plug the old bolt > holes. > > My WAFs aren't really 'off' on the spar (both my old spar & my new wings > are fully complete right now - the wings were slightly damaged in transit > but nothing irreparable), and the holes appear to be the right diameter. > > So it would seem that making 'new ones' from strip steel would be the best > choice, although I am open to more ideas. > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > -------------- next part -------------- A non-text attachment was scrubbed... Name: Top.BMP.jpg Type: image/jpeg Size: 415541 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20160126/b654f117/attachment-0001.jpg>
