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Old 07-24-2021, 11:32 AM   #1
BRENT in 10-uh-C
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Default Re: Parasitic Drain?

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Originally Posted by rotorwrench View Post
Alternators with a bad diode can have a parasitic draw but a well functioning unit will have no draw at all. It is not in their nature to have a problem like that but it can happen over time with electrical spikes or excessive jumping of a worn out battery. I really can't speak to the reliability of the conversion parts. I only tried an alternator once before going back to a generator on my old 29 Ford. The 10si is very reliable using 12-volt negative ground (normal) components in a 3-wire configuration.

The kits used to convert a Delco 10si to 6-volt have a new diode bridge & regulator plus all the parts to overhaul one of these units. These parts and the polarity jumper are all thats needed in a conversion.
Are you sure? I have yet to find a 10si self-exciting regulator that did not have an electric draw, -even brand new out of the box.
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Old 07-24-2021, 12:46 PM   #2
Patrick L.
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Default Re: Parasitic Drain?

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Originally Posted by BRENT in 10-uh-C View Post
Are you sure? I have yet to find a 10si self-exciting regulator that did not have an electric draw, -even brand new out of the box.




I better keep my mouth shut.
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Old 07-28-2021, 12:40 PM   #3
Youngblood
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Default Re: Parasitic Drain?

Hi; I called Nu-Rex and asked them about the draw. There is a draw on the alternators. There is always a small draw when the Battery is connected. 1 - 2 amps is not uncommon but they said it should not cause a significant voltage loss at the battery over time.

Mike
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Old 07-28-2021, 05:18 PM   #4
Patrick L.
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Default Re: Parasitic Drain?

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Originally Posted by Youngblood View Post
Hi; I called Nu-Rex and asked them about the draw. There is a draw on the alternators. There is always a small draw when the Battery is connected. 1 - 2 amps is not uncommon but they said it should not cause a significant voltage loss at the battery over time.

Mike




Well, Nu-Rex is right. But I think that amount is a bit high, but, regardless they draw.

As mentioned, a good shut-off in a convenient location is a good thing.
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Old 12-06-2023, 10:16 AM   #5
JKY
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Default Re: Parasitic Drain?

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Originally Posted by BRENT in 10-uh-C View Post
Are you sure? I have yet to find a 10si self-exciting regulator that did not have an electric draw, -even brand new out of the box.
I would agree. That diode will have a very small leak (draw) even when brand new. When it goes you will see a big draw.
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