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Re: Cotton Waiex 191 - N191YX

PostPosted: Tue Jan 21, 2014 12:08 am
by Bryan Cotton
All longerons piloted to #40 and vertical channels clecoed on the right side.

Re: Cotton Waiex 191 - N191YX

PostPosted: Tue Jan 21, 2014 3:53 am
by sonex892
Did you offset the bottom longeron the thickness of the floor sheet?

Re: Cotton Waiex 191 - N191YX

PostPosted: Tue Jan 21, 2014 8:27 am
by Bryan Cotton
Whoops. Anybody else ever make that mistake?

Re: Cotton Waiex 191 - N191YX

PostPosted: Tue Jan 21, 2014 10:01 pm
by Bryan Cotton
I did a little experiment with scrap. I pilot drilled a piece of .025 flush with the edge of a piece of angle. Then I offset the simulated skin .025 and drilled through with a #30. The hole cleaned up pretty good. If I have any holes I don't like I will go up to a #21 and use an AN470AD5 solid rivet.

I am also looking into a local supplier for angle. Another option is to take some of my 1.5" by .0125" Hummel stock and trim the edges down- maybe on the bandsaw, or I will see if I can borrow my neighbor's plasma cutter.

Spruce estimates $175 in shipping for this $30 worth of aluminum. Anything over 8' does not go UPS.

Any opinions? Thanks Sonex892 for your question.

Re: Cotton Waiex 191 - N191YX

PostPosted: Tue Jan 21, 2014 10:23 pm
by jmattson
Bryan, did a quick Google search and it looks like Liebovich Steel and Aluminum Co. In Rockford sells 6061 T6 angle. Not sure if this helps or not.... Shipping sucks. Period. I'm lucky enough to live farther south in Springfield-Wicks is only about an hour and a half away.

Re: Cotton Waiex 191 - N191YX

PostPosted: Tue Jan 21, 2014 10:43 pm
by Bryan Cotton
Josh,
Found them too. Plus local Sonex builder Ken Irwin recommended this place:
http://www.metalsupermarkets.com/stores ... rd/metals/
I have a quote request into both of them.

Re: Cotton Waiex 191 - N191YX

PostPosted: Thu Jan 23, 2014 12:12 am
by Bryan Cotton
I am on the road to recovery on the lower longerons. I made up a little tool to control the spacing. I have re-clamped the longeron in place and will run the holes up to #30. The test piece tells me I should drill through the extrusion first. I was disappointed to find out that my gnu-vises were too small to clamp over the 1" angle, but as I mentioned before I am the C-clamp king.

Re: Cotton Waiex 191 - N191YX

PostPosted: Thu Jan 23, 2014 10:54 am
by jmattson
Looking good Bryan, nice save!

Re: Cotton Waiex 191 - N191YX

PostPosted: Thu Jan 23, 2014 3:02 pm
by Bryan Cotton
Thanks, I still have to drill to make the save official. It was too late last night. For those of you who are not going to screw up, I think the tool would still be very handy. As it worked out, if you rest the rivet heads on the top of the angle it is nicely lined up.

Re: Cotton Waiex 191 - N191YX

PostPosted: Thu Jan 23, 2014 3:56 pm
by sonex892
Well saved Bryan. Glad you caught it before updrilling.

Steve
Sonex 892