Message-ID: <001401bf5d6e$aee9b200$44a10f3f@oemcomputer>
Reply-To: "dfs" <dfs@gateway.net>
From: "dfs" <dfs@gateway.net>
To: "Lancair List" <lancair.list@olsusa.com>
Subject: Prop Governor Studs
Date: Wed, 12 Jan 2000 18:34:13 -0800
Mime-Version: 1.0

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To Mike S. Reinath re: the question about stud length.

Lycoming makes quite a lot of different stud lengths. Sounds like Don George
slipped up and just installed the wrong ones. I'd check with the Lyc factory
about getting longer ones, or if you have a Lyc dealer in your area, I'd go
to them for a look at the Lycoming parts catalog.

The case end of a stud has a preferred engagement depth in order to develop
the strength necessary for the application. Since all (or most) studs are
threaded into aluminum and utilize coarse threads (an absolute necessity
when installed in aluminum, by the way) you need a stud that is driven to
the correct depth and THEN provides the length to take the governor flange,
the proper washers (probably a flat plus split) and then the nut plus a
couple of threads beyond that.

Get the right stud length for your application, the results of not doing so
can only impact the insurance rates of the rest of us.

Dan Schaefer

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