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Author Topic: cb750 stator rewind  (Read 3203 times)

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Offline KRONUS0100

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cb750 stator rewind
« on: January 12, 2011, 07:11:39 AM »
been looking at this option for a while.  Just got an email back from place in Alabama that says he can rewind my core stator in the DELTA configuration........but he thinks it will screw up the polarity of the stator.  The OEM windings are WYE configured.   The DELTA would produce more more output current over a broader rpm range.  Anyone know for sure on this polarity issue?
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current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline BradyT

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Re: cb750 stator rewind
« Reply #1 on: January 17, 2011, 09:53:58 AM »
I have never heard of switching a motorcycle stator from "Y" to Delta, so I'm curious as to whether it improves output.  The business about polarity doesn't seem right, since the output of the stator is AC, and has no true polarity.  Your rectifier is a full wave configuration, so polarity wouldn't matter anyway.  I would say go for it, but you might want to verify that " stator polarity" was the actual concern.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: cb750 stator rewind
« Reply #2 on: January 17, 2011, 10:59:55 AM »
You might want to try a 750A field coil for higher output. 290W vs 225W. Only difference is smaller gauge/larger wire windings with less resistance. Stators appear to be the same.
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Offline Spanner 1

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Re: cb750 stator rewind
« Reply #3 on: January 17, 2011, 11:08:26 AM »
Very unusual for a stator to go bad.... are you sure that's the issue or was the left-hand cover damaged in a 'spill' ?
BTW... if that's the same guy in AL that rewound my DOHC rotor ( He's on E-Bay, right? ) be ready for 2 months turnaround with 0 communication from him, or you might get it back in 2 weeks, very erratic in his business IMO....
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Offline KRONUS0100

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Re: cb750 stator rewind
« Reply #4 on: January 17, 2011, 01:39:07 PM »
cant find the post now..it was over on the naked goldwings forum.  they rewound a wye stator aws a delta and it increased the output significantly.  Have to look into the 750A stators.
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MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: cb750 stator rewind
« Reply #5 on: January 17, 2011, 03:09:49 PM »
Not 750A STATOR - the stators appear to be the same with the same resistance. It's the 750A FIELD COIL that is different.
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline MRieck

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Re: cb750 stator rewind
« Reply #6 on: February 27, 2012, 04:05:07 PM »
Has anybody used these guys in Alabama to rewind an SOHC stator?????
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