Message-ID: <3C518707.5070706@regandesigns.com>
Date: Fri, 25 Jan 2002 08:25:43 -0800
From: Brent Regan <Brent@regandesigns.com>
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To: Lancair List <lancair.list@olsusa.com>
Subject: RE: DQ
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Charlie:

If your prop is not counterbalanced then the only way to overspeed it is 
to interrupt the oil pressure to the prop. Follow the trail from the 
pickup through the main oil pump, oil gallery, governor pad, governor 
and crank slip ring. Be sure the prop shop understands why they are 
looking at the governor. SOP may be to have an underling shred the 
governor and put it in the cleaner tank before the real mechanic ever 
looks at the parts. Any contamination, particularly in the over pressure 
relief valve, could be lost.

I am curious why there are two impulse couplings. I was under the 
impression that there is typically only one impulse coupling (usually on 
the left mag). Were they broken by overspeed? Are all the parts still 
attached? Is the mag still being driven and if so what happens to the 
ignition timing?

I was very happy to learn that your airmanship skills were able to 
reunite your butt and terra firma at an acceptable VS. Good job!

Regards
Brent Regan

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Please send your photos and drawings to marvkaye@olsusa.com.
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