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MChase(at)gdatp.com
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 Posted: Mon Mar 05, 2007 4:30 am Post subject: Tail cone F-1032 |
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Question to the group did anyone else have an issue with their Longerion breaking during the bending operation or did I get a bad piece of extruded AL?
I was attempting to put a ~2 degree bend in my F1032R Longerion, had it in the vice supported at the 20" mark, my 8 year old daughter was preloading and when I struck it about the 5th time "firmly" right next to the vice with a rubber mallet it broke where 8 -12 inches further down the "being bent" end where I had drilled the hole. I can't figure this out, why would it break in this location? It wasn't hitting anything and from the attached photo you can see I as striking 8-12 inches up stream of the break. My concern is I may have gotten a piece of AL with a fault, cold shock or something? I don't know that much about civilian Aerospace requirements but would think there must be some test requirements for extruded material; X-ray, penetrant or MPI. It seems that some if not most of the Al angle in this kit is structural has anyone else had similar issues with this piece or any others?
By the way I am now afraid to bend the other side any suggestions from the group on a good way to bend this piece.
Michael Chase
General Dynamics Armament and Technical Products
802-657-6029 Office
802-922-5930 Cell
mchase(at)gdatp.com
This e-mail message (including attachments, if any) is for the sole use of the intended recipient(s) and may contain information that is private, confidential, or exempt from disclosure. Any unauthorized review, use, copying, printing, disclosure, retention, or distribution is strictly prohibited. If you are not the intended recipient, please contact the sender by reply to this e-mail, and delete all copies without disclosing this message to others. Thank you.
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Eric_Kallio
Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA
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| Posted: Mon Mar 05, 2007 6:21 am Post subject: Re: Tail cone F-1032 |
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Michael, I also "firmly" bent mine in the same manner as you and didn't have this problem. I would suggest that you call Vans and send them the pictures. It does look like there could have been weak point in the metal with teh fairly clean break, but Vans will be the ones to ulitmately determine this and send you a new piece. I would say go ahead with the other piece and start softer and build up to more firm strikes. If the second one bends properly you have at least validated your method prior to contacting Vans. Just my 2 cents as there are a thousand ways to skin a cat.
Eric Kallio
40518 Fuse on order
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jjessen
Joined: 22 Apr 2006
Posts: 285
Location: OR
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| Posted: Mon Mar 05, 2007 6:45 am Post subject: Tail cone F-1032 |
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Yeah, I second that. They'd want to know this has happened, and I've never
heard this happening before. You don't have to put that much pressure on
the longeron, and I'm sure you didn't. I don't have my electronic plans
with me, but you might think about the order of doing the drilling and
cutting. Wonder if you might mark the location of the drill site first,
bend, then drill.
John Jessen (#328)
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Rick S.
Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas
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egohr1
Joined: 17 Jan 2006
Posts: 38
Location: Oklahoma City
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| Posted: Mon Mar 05, 2007 9:51 am Post subject: Re: Tail cone F-1032 |
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I would send it to Vans.
I just finished benting the Fuse longerons from the 3/4 x 3/4 x .125 angle, and this bent is gentle and easy compared with them.
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eric gohr
EGOHR86@alumni.carnegiemellon.edu |
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MChase(at)gdatp.com
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| Posted: Tue Mar 06, 2007 8:21 am Post subject: Tail cone F-1032 |
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Thanks to all for the advice.
I bent the left last night, same method as previously attempted on the broken right and it looks great no issues, two easy hits and done. I spoke with Brain and Scott at Vans and new F1032 is on the way, they are great to work with!
Michael Chase
General Dynamics Armament and Technical Products
802-657-6029 Office
802-922-5930 Cell
mchase(at)gdatp.com
This e-mail message (including attachments, if any) is for the sole use of the intended recipient(s) and may contain information that is private, confidential, or exempt from disclosure. Any unauthorized review, use, copying, printing, disclosure, retention, or distribution is strictly prohibited. If you are not the intended recipient, please contact the sender by reply to this e-mail, and delete all copies without disclosing this message to others. Thank you.
"egohr1" <EGOHR86(at)alumni.carnegiemellon.edu>
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03/05/2007 01:04 PM Please respond to
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Re: Tail cone F-1032
--> RV10-List message posted by: "egohr1" <EGOHR86(at)alumni.carnegiemellon.edu>
I would send it to Vans.
I just finished benting the Fuse longerons from the 3/4 x 3/4 x .125 angle, and this bent is gentle and easy compared with them.
--------
eric gohr
EGOHR86(at)alumni.carnegiemellon.edu
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