6.7 - 7.2 volts at the +brush. 11.5 out of the ignition switch. I'll look at the regulator next. I was hoping to ride it once befor the snow flies.
Key on 11.5 to Bron wire. 11.5 to regulator. 6.6-7.2 at brushes. What solid state reg is recommended?If it is the stock regulator there are service instructions on line
If it is a electronic regulator ..a new one can be a fast forward solution .
Personally I gave up on the mechanical regulator a few years ago.
Especially is it so with a non stock ignition that can protest if Voltage is off.
There are connectors and fuse holders and so to consider
11.5 is low but with a new regulator perhaps still enough.
Key on 11.5 to Bron wire. 11.5 to regulator. 6.6-7.2 at brushes. What solid state reg is recommended?
That might be enough for at least a slight charge. What's the battery voltage when you rev it to about 3500rpm? If it's higher than battery voltage at rest, you could probably get that ride in "before the snow flies."Key on 11.5 to Bron wire. 11.5 to regulator. 6.6-7.2 at brushes. What solid state reg is recommended?
Congratulations! That was a very nice looking bike and you got a great deal on it!
View attachment 199007
That is the plan. I have a regulator issue to examine and address if needed first.Very pretty bike but if it was mine I'd put the stock front fender &/or some kinda aftermarket fork brace on it.
The XS650's wibbly-wobbly stock front forks need all the help they can get.
My brushes measured yesterday to roughly 1/2 inch so I am right at 13-14mm. I have that regulator and the green wire has approximately 7v key on motor not running. That matches the + brush reading. I did not see a "regulator adjust" in the Technical /Specification section. Did I miss it?Show us what you've got now. This is what the old stock mechanical regulator looks like on the '79 and older bikes. If you have this, it can be adjusted for a higher output, and many need that done to them .....
As far as the brushes go, I never measured voltage at them, just checked their length. They are considered a wear item and when they get too short, they can start losing contact and have to be replaced. New length is about 14mm, and the wear limit is about half that, 7mm. Originals will have a wear line etched in the side to help you determine if they're still good .....
It's in the shop manual. Can't remember if you grabbed the manual yet...My brushes measured yesterday to roughly 1/2 inch so I am right at 13-14mm. I have that regulator and the green wire has approximately 7v key on motor not running. That matches the + brush reading. I did not see a "regulator adjust" in the Technical /Specification section. Did I miss it?
I have that regulator. I admit that wienered up 1 of the screws with a #1 Phillips and will have to reassess that when I get into it again.Show us what you've got now. This is what the old stock mechanical regulator looks like on the '79 and older bikes. If you have this, it can be adjusted for a higher output, and many need that done to them .....
As far as the brushes go, I never measured voltage at them, just checked their length. They are considered a wear item and when they get too short, they can start losing contact and have to be replaced. New length is about 14mm, and the wear limit is about half that, 7mm. Originals will have a wear line etched in the side to help you determine if they're still good .....
Thanks. I did see the JIS explanation in another thread but I of course do not have JIS and have never seen them at various stores.Well, I guess we should mention that most of the Phillips screws on this bike are not really Phillips screws but rather J.I.S. type cross points. They use and need a different type of screwdriver. Normal American Phillips screwdrivers don't fit them correctly. That's why you often find many of the screw heads buggered up on old Japanese bikes. What I use most are the Vessel 2" long power bits .....