Yes, you keep your regulator. This is just a rectifier replacement. You can often tell by the number of wires and their colors. A stand alone rectifier usually has 5 wires, 3 white, a black, and a red. A combined reg/rec usually has 7 wires (2 more for the regulator portion).
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Rewound Alternator Rotor gouges, trouble shooting charging system.
- Thread starter 75XSFLORIDA
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75XSFLORIDA
XS650 Addict
Got it!
So these XS360 or 400 ones that are sealed with cooling fins, I would assume those are better than the 74 or 75 xs650 non-sealed ones. Do these later model ones have to be grounded to something or can I just find a place and mount it?
75XSFLORIDA
XS650 Addict
Perfect. Thanks
When I checked the original mechanical unit on my '78, both gaps were off. It was charging a bit low, about the mid 13's. Just re-setting them to the proper gaps brought the charging output back up (to just over 14 revved). I didn't even need to do an actual adjustment.
75XSFLORIDA
XS650 Addict
I’m a bit confused. See my picture. Of course this is my original one and the ground is circled. This black later model one that we are discussing, that doesn’t have a ground like mine has….. it Just has five wires coming out of the unit….so again can i just mount it anywhere?
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75XSFLORIDA
XS650 Addict
Can you send me that PDF again that somebody sent me earlier? I can’t find it. I wanna look at the voltage regulator test again. Not the gap instructions
75XSFLORIDA
XS650 Addict
Can you send me the PDF again? I can’t seem to locate it
75XSFLORIDA
XS650 Addict
What do you think about these solid state rectifier/regulators?? With Something like this I was just plug it into the rectifier harness and then I can remove the regulator from the bike completely??
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I've not used that brand, but yes the solid state units do replace both the rectifier and regulator. If you want to go that route - and you have a '79 or earlier XS650 US model - you need this unit:
https://www.electrosport.com/collec...esr350-regulator-rectifier-yamaha-xs650-70-81
On the advantages side, that product appears to have the correct connectors to plug right into the factory harness.
75XSFLORIDA
XS650 Addict
75XSFLORIDA
XS650 Addict
Regarding the measurements of the rotor slip rings, you still get an accurate resistance measurement with the stater plugged in correct??
Yes, you can mount it anywhere. It has a black ground wire running to it's inside, you just can't see where it goes because it's a totally enclosed unit. You see it on your original because it's an open air unit.
How are you getting to the inner ring to measure?
75XSFLORIDA
XS650 Addict
Taking the brushes out and the brown bracket that holds them in place…plenty of surface area to measure with all that out as im sure youre aware
75XSFLORIDA
XS650 Addict
Oh ok. Got it. If it was up to you what would you do to alleviate future issues? Would you go with the solid-state rectifier regulator all in one OR just go with one of these newer rectifiers that are fully closed, an OEM Yamaha, and keep the old school mechanical regulator?
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