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What voltage regulator are we talking about here?
Since posted in the 92/93 sector on this forum, I assume a Saab 92A, 92B, or a 93 of any kind.
I have a 92A myself, with 6 volt electrical system. And as far as I know, all 93’s have 12 volt electrical systems.
So, I wonder what is the 8 volt battery?
The original voltage regulator on the Saab 92A I have is not really adjustable.
(unless you modify it yourself, which I think is a bit difficult. I don’t fully grasp the details of it myself)
Maybe if you give some more info, someone can help you further.
- Detta svar redigerades för 1 år, 4 månader sedan av Saab_ahed. Anledning: spelling error
Sorry for my late reply. I didn’t know you replied to my post until just now.
I own a ‘56 92B. I know it’s 6V but I installed an 8V battery for more cranking power. I understand I should adjust the voltage regulator but I don’t know how to do that.
I am aware that an 8V battery might cause me to wear out bulbs prematurely but I’m willing to replace bulbs for better cranking power.
Also, is there a 6V alternator substitution for the generator that will work on my car?
Okay, now I understand.
So you would like to modify your voltage regulator so that the output voltage is 8 volts, instead of 6 volts.
To do this with the original voltage regulator, might be a bit difficult. Not impossible, but not the simplest way.
Attached some pictures of my voltage regulator from my Saab 92A from 1951
It works by flickering contacts opened and closed, through different resistors. Thus regulating the output voltage to the battery.
Here’s a link to a pretty good site explaining it. https://mossmotoring.com/generators-regulators-a-magnetizing-primer/
To adjust the output voltage of your regulator, I think you would need to change the resistance in the coils, or change the stiffness(or length) of the contactor arms.
Easier said than done…
If you are willing to use modern electronics, you could probably get a voltage regulator set for 8 volts, rated for the power output your car needs.
Other car forums sometimes has a ”electronics” area, where this question could have a good chance of getting good answers.
The 92A/B original starter motor is not so powerful, I know. It’s only around 300 Watts (0,4 horsepower)
Have you checked its windings and cable connections? Bad insulation can cause significant powerloss.
(this is just a suggestion 🙂 )
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