flyrotary@lancaironline.net Mailing List Archive

I broke an iron once … the engine slipped during hoisting and broke the casting of one outside tension bolt carrier … not thermal shock.

Jeff

From:	Tracy <rwstracy@gmail.com>
Subject:	Re: [FlyRotary] Re: Blown engine
Date:	Mon, 24 Jun 2013 11:00:53 -0600
To:	Rotary motors in aircraft <flyrotary@lancaironline.net>

FWIW, the thermal shock story is totally bogus.

Tracy

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On Jun 24, 2013, at 9:44, David Leonard <wdleonard@gmail.com> wrote:

Scott,

I have never heard of an iron breaking from thermal shock. I routinely mistreat mine in that manner.

Don't forget to take everything Dave Atkins says with a grain of salt. He has not always been the most straight forward of salesmen.

On Fri, Jun 21, 2013 at 4:27 PM, Scott Emery <shipchief@aol.com> wrote:

I showed the damaged rotor, rotor housing and front side iron to Dave Atkins, the local expert. He thinks my engine suffered FOD but the entry point is a mystery. The broken side iron is My fault: thermal shock. The aluminum rotor housing experienced thermal expansion faster and greater than the side iron because I went to high power before the engine was sufficiently warm. The alignment dowel was moved outward by the growing aluminum housing and cracked out the side iron around the dowel, which is also the oil gallery

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