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Date: Sat, 12 May 2007 17:55:43 -0400
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From: "Mark Ravinski" <mjrav@comcast.net>
References: <list-2040071@logan.com>
Subject: Re: [LML] 360 Landing Incident: Engine Tear-Down/New Props
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Hi Rick,
Condolences.
I bent the tips of my 72" Hartzel on a frost heave.  The prop shop shortened
it 1" each end and straightened it out for the cost of a prop overhaul.
They are the experts.  See if they can fix it.
Similarly, see what's damaged in the engine first.  Maybe nothing.

I went from 8.5 to one up to 9 to one compression.  This makes more
efficient use of fuel, more power and more power at altitude.  75% power
will be at a higher altitude when at full throttle (a little like a turbo).
This is at the expense of more stress on everything.  You might not make
2000 TBO.  (But then, 2000 hours is a long time and if you lend your plane
to your friends it won't matter.)
Your engine will be "experimental" and a log entry will caution anyone who
wants to put it into a Skyhawk or something else certified.

Mark Ravinski
N360KB  1403 hrs


----- Original Message ----- 
From: <RicArgente@cs.com>
To: <lml@lancaironline.net>
Sent: Saturday, May 12, 2007 2:49 PM
Subject: [LML] 360 Landing Incident: Engine Tear-Down/New Props


> So, due to a landing incident that bent the props on my 360, an engine
tear-down is now requried.  This particular engine has approximately 900
hours TTSN.  New props will probably be needed also.
>
> I need some feedback please.
>
> Engine:
>   - install high-compression pistons now? Which ones?
>   - get the engine overhauled now? Zero timed?
>
> Prop
>   - I had the 72" Hartzell props
>   - should I go for the newer 68" ones?
>   - Scimitars blades?
>
>
> Rick Argente
> N360ZR
>
>
> --
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