OK,  so I do not know the difference between a teardown and an overhaul.
The shop called it an "IRAN" actually.. I really wanted to make the point
that when a piece of rotating  machinery is damaged by hitting a fixed
object a teardown should be considered mandatory.  Ask Lycoming.  I believe
they have a new standard and even long grass is included. When mine was torn
down a crack was found in the radius between the propellor flange and the
journal.  The crank had undergone NDT 300 hours earlier and it was felt that
the crack had been missed as it was not a new crack.  I hate to think what
would have happened had that crack propagated to failure. The prop strike
did me a favour in this case.

In my case $17000 fixed the engine and $10,000 fixed the prop.

 I love this forum, a misery shared is a misery halved!!!

Ian B.  Crowe
LNC 2 C-FKRO



--- Original Message -----
From: "Lorn H Olsen" <lorn@dynacomm.us>
To: <lml@lancaironline.net>
Sent: Wednesday, July 01, 2009 6:09 PM
Subject: [LML] Re: Evolution Gear-Up

I have had 4 prop strikes 4 engine teardowns, 1 new crankshaft and 1  new
set of exhaust valve guides. My engine has not had to be overhauled.

The last problem that I had was at 700 hours. I now have 1,600 hours  on
the engine and all compression is still in the mid 70's. I do an  oil
analysis every 100 hours. The analysis are all still good.

Lorn

From: "Ian Crowe" <ian.crowe@sympatico.ca>
Date: June 26, 2009 6:15:32 PM EDT

OH yes, I am a member of the "gear Up" club and I know believe  me!!!!
After a prop strike an overhaul is mandatory.  Apart from  mandatory it
is good common sense.

Ian Crowe
Lancair LNC2 IO360

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,570 hrs, N31161, Y47, SE Michigan


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