Lister Engine Forum
Lister Engines => Things I want to Buy => Topic started by: keith71 on August 31, 2022, 12:07:03 AM
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Hi, central GA generator has been out of stock on the chinese ST style 1800 rpm heads for a few month's. Looking for pretty much any size between 5k to maybe up to 15k watts. Any of you guy's have one you are looking to sell. Will take pretty much any condition except for a bad rotor.. Yes I am getting desperate. Have lot's of small engines generators, parts etc, for a possible partail trade plus cash. Or will just buy outright. Somebody has to have an extra one laying around that they may never use. Please pm me if you are that guy or gal.. Thank's
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Hi Keith71, it would help to know which country you are in.
Bob
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Yes forgot to mention I am in the U.S. Thanks.
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Hi Keith71, I know where to get them here in Australia. In the USA I would be contacting Dieselgman or 38ac, they maybe able to point you in the right direction.
Good hunting,
Bob
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Yes somebody else recomended dieselgman.. I am going to contact him. Thank you.
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Found one.. Wasn't as hard as I thought it was going to be.. Thanks.
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Hi Keith71, well done on getting an ST head. Once you have taken delivery, you need to check it out completely. The wiring in the dogbox on top is usually very poor, the little bridge rectifier will probably be rubbish. I replaced the rectifier with a decent unit bolted to a heatsink to keep it cool. Later, I fitted an AVR.
Check out the two bearings, these are often unsealed cheap Chinese sh1t lubricated with yak fat.
Check the slip rings, these are fixed to the shaft with an adhesive and are often not concentric with the shaft. I hade to put mine in a lathe and skim them to get them true.
The brush holders are nothing to write home about but they do work. The brushes are very soft and brittle I recommend you get some spares if you need reliability.
Bob
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Hi Keith71, well done on getting an ST head. Once you have taken delivery, you need to check it out completely. The wiring in the dogbox on top is usually very poor, the little bridge rectifier will probably be rubbish. I replaced the rectifier with a decent unit bolted to a heatsink to keep it cool. Later, I fitted an AVR.
Check out the two bearings, these are often unsealed cheap Chinese sh1t lubricated with yak fat.
Check the slip rings, these are fixed to the shaft with an adhesive and are often not concentric with the shaft. I hade to put mine in a lathe and skim them to get them true.
The brush holders are nothing to write home about but they do work. The brushes are very soft and brittle I recommend you get some spares if you need reliability.
Bob
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+1 on everything Bob says here
My Chinese ST - the bearings were horrible & grumbly even from new. I just replaced them with sealed SKF ones. At one end of the shaft the bearing journal was only about 80% of the shaft as it had been badly made - nothing to be done about that
One of my brushes snapped in half just disassembling them. I had some brushes made locally - the guy that makes them says the Chinese brushes are just sort of pressed material and won't last
And, yes, the doghouse wiring was awful. One of the "live" wires that goes to the voltmeter was jammed under the body of the doghouse and grounded . . . .
Just give it a good, common-sense check-over
Mine works fine, generates voltage OK. Not particularly noisy. But I wouldn't regard it as my primary depend-on-it day-to-dat generator
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Hi Guys, just one further thing to check. The wires that run between the armature and the slip rings on my ST were loosely wrapped with a piece of old rag, allowing them to move about. Only a matter of time till they would have shorted out against the shaft! I couldn`t find a supplier of old fashioned cloth insulation tape so I used Micropore surgical tape to hold everything in place. I then gave it several coats of polyurethane varnish, should outlast me.
Bob