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zenith-list(at)steensland
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 Posted: Mon Aug 16, 2010 8:57 am Post subject: XL Center section |
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Folks,
This weekend I got enough solid rivets in the center section that I can
call it "done". However I have two lingering questions.
1. Did people that have completed it put washers under the heads as well
as the nuts of the AN4 bolts? Or just the nuts? I have almost a full
thread showing with a washer under the head and nut.
2. How tight is the fit of the upgraded wing spar in the upgraded center
section. I tried to do a test fit and the top seems awful tight, like
needed-to-pry-the-halves-apart-a-bit so the top part of the spar would
fit.
I'm > < close to calling zenith and just ordering an upgraded center
section.
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paulrod36(at)msn.com
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| Posted: Mon Aug 16, 2010 9:35 am Post subject: XL Center section |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Lee, you may want to talk it over with Zenith before ordering. As I recall, they pre-fit each set of spars and carry-through, and mixed parts may not necessarily fit together.
Paul R
[quote] ---
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psm(at)att.net
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| Posted: Mon Aug 16, 2010 9:36 am Post subject: XL Center section |
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Hi Lee,
I think the primary purpose of washers with bolts is to adjust the length of bolt required. I believe you should always have at least 2 threads showing after tightening the nut.
I don't think there is any reason to use washers with solid rivets. Indeed I have never heard of anyone doing that. Sometimes there is a need to add a layer of metal to make up for an irregular hole, but that is usually larger than a washer.
Paul
XL working on upgrade of second wing.
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craig(at)craigandjean.com
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| Posted: Mon Aug 16, 2010 9:48 am Post subject: XL Center section |
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They matched the parts for a while (the wing and center spars in my QBK all have matching serial number plates). But I recall being told at a later time that this was no longer necessary. But I bet it depends on the vintage of your spars.
-- Craig
From: owner-zenith601-list-server(at)matronics.com [mailto:owner-zenith601-list-server(at)matronics.com] On Behalf Of paulrod36(at)msn.com
Sent: Monday, August 16, 2010 10:33 AM
To: zenith601-list(at)matronics.com
Subject: Re: XL Center section
<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Lee, you may want to talk it over with Zenith before ordering. As I recall, they pre-fit each set of spars and carry-through, and mixed parts may not necessarily fit together.
Paul R
[quote] ---
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tigerrick(at)mindspring.c
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| Posted: Mon Aug 16, 2010 10:48 am Post subject: XL Center section |
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Sounds like you're doing everything right, Lee.
I have one washer under the nut on the AN4s, nothing more.
And yes, it IS a tight fit, and you may have to spread the spar a bit to get the wing stub end to nest.
Rick Lindstrom
Zenvair N42KP
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