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swater6
Joined: 16 Dec 2006
Posts: 52
Location: Minnesota-KMIC/KANE
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 Posted: Wed Mar 21, 2007 9:05 am Post subject: Nicked my spar with drill bit |
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Before I send this one to Zenith, I thought I'd bounce it off the post.
The one thing I've avoided during wing construction is any nicks on the main spar that would lead to a crack. Last night while drilling the small holes for nutplates for the finger screen access cover, I nicked the main main spar doubler with the bit. (I almost barfed) Standard procedure is to sand or file smooth. I sanded and it's completely smooth. But... this leaves a small concave section almost 1mm deep at the deepest point but blends out nicely and doesn't extend more than about 8mm from the top of the piece.
You know the question. Would you rip your wing apart to drill out and replace the doubler or is this amount of material sanded off of no affect?
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_________________
601 XL kit N596SW reserved
Tail, control surfaces and both wings complete. Now working on fuselage
www.scottwaters.com |
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carlossa52(at)gmail.com
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| Posted: Wed Mar 21, 2007 9:53 am Post subject: Nicked my spar with drill bit |
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Number 1, you do need to talk to ZAC.
Number 2, I did something similar on my stabilizer. I wrote to ZAC, and got an answer from Chris Heintz: he said to treat the spar as a propeller with a nick - just file it until smooth.
So, I'd say you need not trash or even disassemble anything. But do contact ZAC and get their advice.
Good luck
Carlos
CH601-HD, plans.
On 21/03/07, swater6 <waters.scott(at)comcast.net (waters.scott(at)comcast.net)> wrote:[quote] --> Zenith-List message posted by: "swater6" <waters.scott(at)comcast.net (waters.scott(at)comcast.net)>
Before I send this one to Zenith, I thought I'd bounce it off the post.
The one thing I've avoided during wing construction is any nicks on the main spar that would lead to a crack. Last night while drilling the small holes for nutplates for the finger screen access cover, I nicked the main main spar doubler with the bit. (I almost barfed) Standard procedure is to sand or file smooth. I sanded and it's completely smooth. But... this leaves a small concave section almost 1mm deep at the deepest point but blends out nicely and doesn't extend more than about 8mm from the top of the piece.
You know the question. Would you rip your wing apart to drill out and replace the doubler or is this amount of material sanded off of no affect?
--------
601 XL kit
Tail, control surfaces and 1 wing complete
[b]
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planecrazydld(at)yahoo.co
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| Posted: Wed Mar 21, 2007 11:36 am Post subject: Nicked my spar with drill bit |
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contact ZAC and make sure that you get a response in writing from an Engineer. It makes a great deal of difference upper cap, lower cap, point on span, depthin % of wall thickness, % of wall height affected, proximity to edge, etc., etc....
Carlos Sa <carlossa52(at)gmail.com> wrote: [quote]Number 1, you do need to talk to ZAC.
Number 2, I did something similar on my stabilizer. I wrote to ZAC, and got an answer from Chris Heintz: he said to treat the spar as a propeller with a nick - just file it until smooth.
So, I'd say you need not trash or even disassemble anything. But do contact ZAC and get their advice.
Good luck
Carlos
CH601-HD, plans.
On 21/03/07, swater6 <waters.scott(at)comcast.net (waters.scott(at)comcast.net)> wrote: [quote]--> Zenith-List message posted by: "swater6" <waters.scott(at)comcast.net (waters.scott(at)comcast.net)>
Before I send this one to Zenith, I thought I'd bounce it off the post.
The one thing I've avoided during wing construction is any nicks on the main spar that would lead to a crack. Last night while drilling the small holes for nutplates for the finger screen access cover, I nicked the main main spar doubler with the bit. (I almost barfed) Standard procedure is to sand or file smooth. I sanded and it's completely smooth. But... this leaves a small concave section almost 1mm deep at the deepest point but blends out nicely and doesn't extend more than about 8mm from the top of the piece.
You know the question. Would you rip your wing apart to drill out and Don't get soaked. Take a[url= http://tools.search.yahoo.com/shortcuts/?fr=oni_on_mail&#news] quick peek at the forecast [/url]
with the[url= http://tools.search.yahoo.com/shortcuts/?fr=oni_on_mail&#news]Yahoo! Search weather shortcut.[/url] [quote][b]
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paulrod36(at)msn.com
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| Posted: Wed Mar 21, 2007 2:18 pm Post subject: Nicked my spar with drill bit |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Been there, done that, but bigger and worser. According to 43-31, or whatever the number is, if you "dish" the surface 10 long and 1 deep, (as measured by the depth of the nick) you're OK. as long as it's a small nick or scratch. Mine, I got it real good, and will have to open it up and replace the doubler. Just make sure you leave no trace of the nick when you're done, and it's as smooth as original.
Paul Rodriguez
601XL/Corvair
[quote] ---
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