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Post by modbus on May 13, 2023 20:13:36 GMT -5
The crankshaft on the $150 engine protected the 50 cent key from catastrophic failure! Oh happy day!
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Post by Taildragger on May 13, 2023 20:23:17 GMT -5
Almost as good as when a thrown connecting rod prevents overheating by punching a ventilating window in the engine block!
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Post by Laker on May 13, 2023 21:33:56 GMT -5
The crankshaft on the $150 engine protected the 50 cent key from catastrophic failure! Oh happy day!
I’m not getting this. Are you saying that a key that prevents a pulley (or some device) from slipping snapped a crankshaft? It would seem that the key did its job when something jammed whatever the key was put it place to prevent slipping. |
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Post by Lesterstrat on May 13, 2023 21:37:19 GMT -5
I don't get it either but, full disclosure, I'm not for sure which end of the screwdriver I'm supposed to use.
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Post by modbus on May 13, 2023 22:16:00 GMT -5
The crankshaft on the $150 engine protected the 50 cent key from catastrophic failure! Oh happy day!
I’m not getting this. Are you saying that a key that prevents a pulley (or some device) from slipping snapped a crankshaft? It would seem that the key did its job when something jammed whatever the key was put it place to prevent slipping.
This was on a wood chipper. I would have assumed the manufacturer would have used a shear key to connect the cutting wheel assembly to the crankshaft, like what is typically used on a engine flywheel. The downside, of course, to using a shear key is that you have to replace the 50 cent shear key if the machine jams. The upside, however, is that you don't have to replace the $159 engine if the machine jams. I would have much preferred replacing a key.
Incidentally, this happened on the first start of the wood chipper this season. I started it, it rattled around a whole lot, and then it really smoothed out, like there was no load on the engine, because there was no load on the engine. I hadn't even put any branches in it yet.
What I think happened was that the bolt used to affix the cutting wheel to the crankshaft had worked itself loose, the wheel started wobbling, and then it dug itself into a part of the housing. Something had to give, and it was the PTO portion of the crankshaft/
So, I guess I wish the manufacturer would have either used a bit of loc-tite on the crankshaft bolt, or used a shear key. Either way I'd still have a functional wood chipper.
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Post by guildx700 on May 13, 2023 23:58:43 GMT -5
I had a Kawasaki KZ 750 back in the day. One day out on the highway I went to pass a slow car, someone in the oncomming lane decided to speed up at me, I thought I dropped it down a gear, but it was a few, the tach burried the needle and I felt something hot on my leg. Seems a valvespring shim spit out from under a bucket, popped a hole in the head and the hot oil was comming from there. Well, I pull over, assess the situation, take a sandwich in a ziploc bag I had for lunch with me and jam it in the hole. It stopped the oil leak. I then drove the bike another 20 miles to work. Later fixed the hole in the head with JB Weld. Kids...go figure. bike looked like this:  |
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Post by roly on May 14, 2023 0:58:52 GMT -5
Sheer pin?
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Post by Leftee on May 14, 2023 6:07:02 GMT -5
They sell those at Victoria’s Secret.
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Post by modbus on May 14, 2023 8:32:09 GMT -5
I'm not allowed in there anymore.
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Post by HeavyDuty on May 14, 2023 9:20:51 GMT -5
I'm not allowed in there anymore. Tried to squeeze into too small stuff one time too many? |
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Post by Taildragger on May 14, 2023 11:04:09 GMT -5
I'm not allowed in there anymore. Tried to squeeze into too small stuff one time too many? He spilled some Bud Lite on a peignoir he was trying on.
At least that's the story I heard...
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Post by modbus on May 14, 2023 11:35:33 GMT -5
This thread about broken shafts has taken a strange turn
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Post by Leftee on May 14, 2023 11:37:31 GMT -5
It’s almost a gun thread.
… and second now.
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Post by guildx700 on May 14, 2023 15:15:57 GMT -5
This thread about broken shafts has taken a strange turn There's always that little blue pill. Jes' saying.  |
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