1977 cb750 regulator/rectifier

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1977 cb750 regulator/rectifier

abomb1982
the problem: Right now at an idle my bike charges at 12v, at 2500rpm it like 14v and at 4000rpm 15v.

The question: If i upgrade to the newer combo reg/rec will I get a more consistent charge? Something like 14v all the time?

Thanks
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Re: 1977 cb750 regulator/rectifier

TOOLS1
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The regulator is what controls the charge, so if the new one is set correctly, yes, it should charge at 13-14 volts.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1977 cb750 regulator/rectifier

abomb1982
Right I get that but because my bike is charging I really want to know what are the advantages if any to updating?
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Re: 1977 cb750 regulator/rectifier

shinyribs
Administrator
IMO, there's not any advantage. Your bike was built with "mechanical" charging components that are bulky in comparison, but darn near bullet proof. The solid state stuff is small and reliable, but not like the old stuff. 40 year old mechanical voltage regulators that are still healthy is not uncommon. 40 years on anything solid state is remarkable.
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Re: 1977 cb750 regulator/rectifier

TOOLS1
Administrator
In reply to this post by abomb1982
Let's see, advantages? None really. Well maybe if you were building a custom bike, and wanted to clean up the electrics. And since the alternator supplies the electricity,  and can only supply so much at low RPMs until the regulator starts to regulate it, I doubt your charging will be any more consistent.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1977 cb750 regulator/rectifier

abomb1982
excellent, Thank you guys, I will go with if it aint broke dont fix it. :)