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Aug 24, 2019, 12:51 PM
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toad007's Avatar
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Nelson vs Nelson


This one took a hit from another, pushing the head bolt thru the case and liner, stopping the piston.
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Aug 24, 2019, 12:56 PM
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JMynes's Avatar
Good hard smack right there.
Aug 25, 2019, 04:49 AM
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This happened to my Nelson 15 diesel while it was running in the air. No collision.


Aug 25, 2019, 08:56 AM
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I have seen a similar picture of a Nelson cylinder that hit the pitman in the knee before (not) taking off. I think it was a glow but do not really know.
Aug 25, 2019, 09:03 AM
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toad007's Avatar
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Quote:
Originally Posted by locktite401
This happened to my Nelson 15 diesel while it was running in the air. No collision.


Wow, incredible
Aug 26, 2019, 10:53 AM
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Quote:
Originally Posted by toad007
Wow, incredible
Happened during a Goodyear race. The pilot shut it down " 'cause it sounded funny". I started it up again and the cylinder popped off and hit my knee :-)

It's running again with a replacement crankcase.
Aug 26, 2019, 09:53 PM
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OK, so you are the pitman victim. That is a very thin wall where it broke. I hope Henry changed the casting thickness there.
Aug 31, 2019, 12:24 PM
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Looks like it might have been a tad overcompressed...
Aug 31, 2019, 12:43 PM
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Wow, that is a REALLY thin wall!
Sep 01, 2019, 03:23 AM
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Quote:
Originally Posted by wy8w
Wow, that is a REALLY thin wall!
Yes, it was a known problem with that engine, 1980's era FIRE. This one was a secondhand buy and I fitted a new AAC Diesel p/l from Henry Nelson. Runs fine now with the same p/l but another crankcase. Probably used in combat in it's first life.


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