Message-ID: <020101bf1108$833bad00$0a55d0d8@default>
From: "Ian B. Crowe" <ian.crowe@sympatico.ca>
To: "Marvin Kaye" <lancair.list@olsusa.com>
Subject: Prop problems
Date: Thu, 7 Oct 1999 17:11:23 -0400
Organization: Corvi Trade Consultants Inc
Mime-Version: 1.0

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My  two cents Canadian is that you should approach Hartzell and ask them
what to do.  There is a really neat guy there and yes I have lost his name
but he is an engineer who has responsibility for Lancair.  I phoned him and
he gave me all sorts of info, some of which was supported by test results,
some of which he said was his unofficial opinion based on experience.  What
he did do was to give you a basis to make decisions.  It appears to be
Hartzell's position that if they have not had it on the front of an aircraft
with a particular engine driving it then they cannot give you an unqualified
go ahead.  I think that is reasonable.  However they do have a lot of
experience and their informal advice is well informed

I also got a lot of information on critical engine speeds.  I was looking at
a prop that had come from a Mooney and had been running cut down to 70" on
the Mooney prior to removal.  It was not approved for use on the Mooney at
that length.    I canned the idea in the end on a weight basis as it was
heavy.

If I find the guy's name I will post it.  If you ask for the engineer that
deals with Lancair he should get the same person as I did.

Regards

Ian Crowe

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