Posted: 4/6/2011 9:07:31 AM EDT
Landed safely, only 5 miles from airport. 
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Did you land on the beach just outside JFK? j/k. Looks like you did a good job. The same cannot be said for the Mech that slapped that engine together, or the guy who casted the parts.  Looks like a parts failure not a mechanic failure. That engine sure is purty inside low hours? |
| I'm having a hard time visualizing what I'm looking at in the second picture. I'm assuming that it's the ends of the connecting rod against the crankshaft inside the block, but I would have expected to see something with two large journals in parallel and not two small ones on some sort of guided rollerbearing assembly that looks like it rotates with the crankshaft inside. Can you shed some light on exactly what I'm looking at? |
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I'm having a hard time visualizing what I'm looking at in the second picture. I'm assuming that it's the ends of the connecting rod against the crankshaft inside the block, but I would have expected to see something with two large journals in parallel and not two small ones on some sort of guided rollerbearing assembly that looks like it rotates with the crankshaft inside. Can you shed some light on exactly what I'm looking at? Radial engine, second pic is inside the case. 8 rods attach to a 'master' rod. Engine kept running, not happily but it kept running. No holes in the case, no oil loss. Uneventful landing on a runway. Some dirty laundry. 
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| Yikes! Strage locations for a rod failure through the I-beam like that, with both pins looking to be in good shape. Looks like the crack started from the left side of the picture and propogated diagnally from left to right as it "unzipped." The fracture on the right side was probably follow on damage as the piston was forced down pushing the rod into the rest of the rotating assembly. What was the operating conditions during the failure and engine hours? |
Any landing you can walk away from...
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Quoted:
Quoted:
I'm having a hard time visualizing what I'm looking at in the second picture. I'm assuming that it's the ends of the connecting rod against the crankshaft inside the block, but I would have expected to see something with two large journals in parallel and not two small ones on some sort of guided rollerbearing assembly that looks like it rotates with the crankshaft inside. Can you shed some light on exactly what I'm looking at? Radial engine, second pic is inside the case. 8 rods attach to a 'master' rod. Engine kept running, not happily but it kept running. No holes in the case, no oil loss. Uneventful landing on a runway. Some dirty laundry. Gotcha. For some reason...I was stuck in "horizontally opposed" mentality and a radial didn't even come to mind. 
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I once saw a Twin Beech out of Oakland lose a jug.
Pilot went WFO on both mills, and that crippled P&W ran itself to death. Parts fell out when we opened the cowl. Sounded like hell, but the good one and the hurt one both howled and dragged that Beech through. There are very few aircraft engines that are as anvil tough as a P&W single row radial. |