---------------------------------------------------------- Rocket-List Digest Archive --- Total Messages Posted Sat 06/30/12: 3 ---------------------------------------------------------- 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 _____________________________________ Time: 05:28:09 AM PST US Subject: Rocket-List: Engine failure From: Jim Stone 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 _____________________________________ Time: 09:17:35 AM PST US From: Rob Ray Subject: Re: Rocket-List: 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 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 _____________________________________ Time: 06:05:39 PM PST US From: "cybersuperstore" Subject: RE: Rocket-List: Engine failure 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rocket-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Rocket-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rocket-list Browse Digests http://www.matronics.com/digest/rocket-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.