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Re: Heat and aluminum

Tony,
Either annealing or changing temper of aluminum generally requires temps in excess of 500F. I have friends at work who can more definitively answer the question for 6061-T6. I will get back to you. I think you are fine however.
by Bryan Cotton
Thu Sep 19, 2013 6:54 am
 
Forum: General Discussion
Topic: Heat and aluminum
Replies: 3
Views: 2487

Re: Cotton Waiex 191 - N191YX

I assembled the left hand side with similar results. This time I was careful to take the springback out of the flanges, so the bottoms were 90 and the tops matched the angle of the front spar in the plans. I did not think that would make a difference for a dry fit, as on the right side the clecoes w...
by Bryan Cotton
Wed Sep 18, 2013 10:09 pm
 
Forum: Photo Album
Topic: Cotton Waiex 191 - N191YX
Replies: 1528
Views: 4078451

Re: Cotton Waiex 191 - N191YX

Trial assembly of right stab. Root rib seems too short though it measures up right.
by Bryan Cotton
Tue Sep 17, 2013 10:54 pm
 
Forum: Photo Album
Topic: Cotton Waiex 191 - N191YX
Replies: 1528
Views: 4078451

Re: Left & right, plus hole alignment

All, A happy ending. Clecoing in from the root to tip, I realized it was only the last 4 or 5 holes that were poorly aligned. I clamped the hockey stick in a vise (between two pieces of pine) and gave it a tweak, and the holes lined up well at #40 and cleaned up at #30. I clamped the hockey stick fl...
by Bryan Cotton
Mon Sep 16, 2013 9:02 pm
 
Forum: General Discussion
Topic: Left & right, plus hole alignment
Replies: 4
Views: 3885

Re: Left & right, plus hole alignment

Kerry says it is OK to flex the fingers over and updrill/rivet it that way. I may look at sliding the hockey stick slightly to share the misalignment so I can get it cleaned up with the #30 bit.
by Bryan Cotton
Mon Sep 16, 2013 4:32 pm
 
Forum: General Discussion
Topic: Left & right, plus hole alignment
Replies: 4
Views: 3885

Re: Left & right, plus hole alignment

Thanks for the reply Keith! The bend in the hockey stick is away from all the holes, so there is no way it can affect the alignment out at the fingers. I suspect there is thermal expansion at play when the holes are piloted, and when it cools the fingers warp. More likely to be an issue in .25 than ...
by Bryan Cotton
Mon Sep 16, 2013 11:33 am
 
Forum: General Discussion
Topic: Left & right, plus hole alignment
Replies: 4
Views: 3885

Re: Cotton Waiex 191 - N191YX

First clecoes! Found some mixed up labeling of left and right parts, plus the holes don't line up great. I posted some questions here, at sonextalk, and with Sonex tech support.
by Bryan Cotton
Sun Sep 15, 2013 6:21 pm
 
Forum: Photo Album
Topic: Cotton Waiex 191 - N191YX
Replies: 1528
Views: 4078451

Left & right, plus hole alignment

Hi all, Working on my tail, I am pretty sure the left and right forward stab spars had the wrong stickers on them. Same for the -05L and -05R clips. Am I crazy or is this a common labeling mistake? I piloted up my laser drilled hockey stick holes to #40. If I cleco in the root first, I have to flex ...
by Bryan Cotton
Sun Sep 15, 2013 5:48 pm
 
Forum: General Discussion
Topic: Left & right, plus hole alignment
Replies: 4
Views: 3885

Re: Laser drilled holes

That is part of what I was wondering, thanks David. I am planning on having my son do one of the hockey sticks and I think I will give him the drill press and I will freehand the other one.
by Bryan Cotton
Sun Sep 15, 2013 9:17 am
 
Forum: General Discussion
Topic: Laser drilled holes
Replies: 11
Views: 8073

Re: Laser drilled holes

Thanks Eric, I will do that. I should start this afternoon.
by Bryan Cotton
Sun Sep 15, 2013 7:00 am
 
Forum: General Discussion
Topic: Laser drilled holes
Replies: 11
Views: 8073
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