Today's Message Index:
----------------------
1. 05:28 AM - Engine failure (Jim Stone)
2. 09:17 AM - Re: Engine failure (Rob Ray)
3. 06:05 PM - Re: Engine failure (cybersuperstore)
Message 1
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I had an engine failure in my Harmon Rocket (Lyc IO 540), and I am looking for
an engine expert to have a look at all the pieces and tell me what caused the
failure. I have the entire engine disassembled and available for inspection in
Louisville Kentucky.
Or, I would like any info on KS bearing failure and their roll in engine failures.
My engine failed with less than 400 hours since 0 time rebuild.
The engine started making a faint knocking noise followed by oil temp climb and
caution, I headed back to my field and I was on base leg when a connecting rod
failed and punched thru the case, I landed without further incident.
The engine seized just after touchdown. The case, crank, cam, rods, pistons and
cylinders were all damaged and unusable.
Of note, my engine started making metal on the last oil analysis indicating something
wearing, the company said to retest in 25 hours, I didn't make 10. I suspect
the KS rod bearing failed causing the rod bolts to work harden and fail.
If you have any experience or knowledge you could pass on to me, please call or
email me.
My goal is to pursue KS bearing if they are determined to be the cause of the failure.
Thanks,
Jim Stone
502 235-3599
Sent from my iPad
Message 2
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| Subject: | Re: Engine failure |
Jim,
I will visit my Lycoming expert friend JR next week and share your experience.
I will let you know what transpires.
Smokey
Sent from my iPhone
On Jun 30, 2012, at 8:27, Jim Stone <jrstone@insightbb.com> wrote:
>
> I had an engine failure in my Harmon Rocket (Lyc IO 540), and I am looking for
an engine expert to have a look at all the pieces and tell me what caused the
failure. I have the entire engine disassembled and available for inspection
in Louisville Kentucky.
>
> Or, I would like any info on KS bearing failure and their roll in engine failures.
My engine failed with less than 400 hours since 0 time rebuild.
>
> The engine started making a faint knocking noise followed by oil temp climb and
caution, I headed back to my field and I was on base leg when a connecting
rod failed and punched thru the case, I landed without further incident.
>
> The engine seized just after touchdown. The case, crank, cam, rods, pistons
and cylinders were all damaged and unusable.
> Of note, my engine started making metal on the last oil analysis indicating something
wearing, the company said to retest in 25 hours, I didn't make 10. I
suspect the KS rod bearing failed causing the rod bolts to work harden and fail.
> If you have any experience or knowledge you could pass on to me, please call
or email me.
>
> My goal is to pursue KS bearing if they are determined to be the cause of the
failure.
>
> Thanks,
> Jim Stone
> 502 235-3599
>
>
>
> Sent from my iPad
>
>
>
>
Message 3
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Glad you are OK, Jim.
-----Original Message-----
From: owner-rocket-list-server@matronics.com
[mailto:owner-rocket-list-server@matronics.com] On Behalf Of Jim Stone
Sent: Saturday, June 30, 2012 5:28 AM
Subject: Rocket-List: Engine failure
I had an engine failure in my Harmon Rocket (Lyc IO 540), and I am looking
for an engine expert to have a look at all the pieces and tell me what
caused the failure. I have the entire engine disassembled and available for
inspection in Louisville Kentucky.
Or, I would like any info on KS bearing failure and their roll in engine
failures. My engine failed with less than 400 hours since 0 time rebuild.
The engine started making a faint knocking noise followed by oil temp climb
and caution, I headed back to my field and I was on base leg when a
connecting rod failed and punched thru the case, I landed without further
incident.
The engine seized just after touchdown. The case, crank, cam, rods, pistons
and cylinders were all damaged and unusable.
Of note, my engine started making metal on the last oil analysis indicating
something wearing, the company said to retest in 25 hours, I didn't make 10.
I suspect the KS rod bearing failed causing the rod bolts to work harden and
fail.
If you have any experience or knowledge you could pass on to me, please call
or email me.
My goal is to pursue KS bearing if they are determined to be the cause of
the failure.
Thanks,
Jim Stone
502 235-3599
Sent from my iPad
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