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12-16-2017, 11:34 AM
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Join Date: Dec 2015
Location: Auburn, AL
Posts: 200
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6061-T6 Aluminum Angle
So I have to re-fabricate F-710B which is made from 6061-T6 .125x1x1 angle that the horizontal stab attaches to. I ordered the new angle from Aircraft Spruce, and the invoice says it's 6061-T6...but there is nothing stamped on the angle itself.
Obviously being a very critical piece, I am stressing about whether or not it is the correct type. Is there a way to determine this, or should I order another piece from Van's instead?
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Steve T.
CFII/MEI/ATP 737,DC-10
RV-7 slow build
AUO
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12-16-2017, 11:46 AM
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Join Date: Jul 2017
Location: Oceanside, California
Posts: 106
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Ask them for a material cert? I used to get them all the time from material suppliers when I worked on certified aircraft.
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Ben
2019 dues paid.
RV7 empennage acquired and the "journey" has officially begun. Wings are here!
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12-16-2017, 11:52 AM
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Join Date: Feb 2010
Location: NC
Posts: 42
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I would not be too concerned. As long as the edges do not have sharp corners (indicating possibly 6063 alloy) the alloy is most likely 6061 or 2024. If 2024 it is actually stronger than 6061.
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12-16-2017, 12:17 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,769
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Quote:
Originally Posted by RYOUNG
I would not be too concerned. As long as the edges do not have sharp corners (indicating possibly 6063 alloy) the alloy is most likely 6061 or 2024. If 2024 it is actually stronger than 6061.
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2024 IS stronger but it is not very corrosion resistant. 6061 is VERY corrosion resistant.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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12-16-2017, 01:41 PM
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Join Date: Dec 2012
Location: Katy, TX
Posts: 233
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Not material related,but when you size F-710B, make it a little bit larger, test fit and file it down until it slips into place. My first attempt exactly as per drawings ended up a little too short and I could see I would have hole distance issues with the two AN3 bolts in that area.
I also rounded two horizontal ends so they nested nicely into the longerons maximizing the material around the bolts.
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12-16-2017, 03:00 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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I just checked my old and scrap stock.
None of the 6061-T6 angles, both from Vans and Spruce had any printing on them.
By comparison, some 2024-T3 angles just purchased from Spruce were continuously marked on an inside face.
The difference may be that the 6061 stuff is a common stocked item for commercial use - our local metals store carries it - while the 2024 stuff may be a bit more oriented to aviation use.
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Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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12-16-2017, 03:25 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,947
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Good advise
Quote:
Originally Posted by nilberg
Not material related,but when you size F-710B, make it a little bit larger, test fit and file it down until it slips into place. My first attempt exactly as per drawings ended up a little too short and I could see I would have hole distance issues with the two AN3 bolts in that area.
I also rounded two horizontal ends so they nested nicely into the longerons maximizing the material around the bolts.
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+1. What he said. You want that part nested like it was poured into the longerons.
I just drilled my HS. That's a common place for problems.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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12-16-2017, 05:00 PM
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Join Date: Dec 2015
Location: Auburn, AL
Posts: 200
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Quote:
Originally Posted by wirejock
+1. What he said. You want that part nested like it was poured into the longerons.
I just drilled my HS. That's a common place for problems.
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Yes, precisely why I am replacing. I was about to rivet on the aft deck and wasnt happy with the edge distance so i drilled it out.
Thanks
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Steve T.
CFII/MEI/ATP 737,DC-10
RV-7 slow build
AUO
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12-16-2017, 06:29 PM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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Quote:
Originally Posted by RV74ME
Yes, precisely why I am replacing. I was about to rivet on the aft deck and wasnt happy with the edge distance so i drilled it out.
Thanks
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Way to recognize the issue and go about making it right. That's a good attitude.
This is one area where a template can be useful to check the fit before you fabricate the part.
For some parts, the dimmensions shown are just a suggestion or good starting point  There are variances in every build.
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Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
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