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Re: [T3] DBB alternator related subject


On Wed, 2005-03-23 at 10:43, Constantino Tobio wrote:

> 

> It's also smart to do something similar to the starter, as Jim stated.
> Any time you can minimize the amount of power going through a switch is
> a good thing- and these 4 terminal relays are a helluva lot easier to
> find than headlamp/ignition switches for our cars.
> 
I think I mentioned it a while back, that a good source for power
relays, is water cooled VW's. They have a half dozen or so relays that
are rated to 30-40 amps. AND, they use the same wiring numbers as our
cars.
Also, I was just looking through some of my old notes from VW electrical
school, and found the complete specs on 6V and 12V generators. A 12V
generator has a cut in speed of 2200-2300 rpm. That is shaft speed of
the generator. And I think, Jim can correct me if I am wrong, we have
about a 2.3:1 ratio with the crankshaft. That means our generators start
charging at about 1000rpm crank speed.
If you head lights dim at a stop light, turn you idle up a little.
And if you want more staying power, parallel a second battery under the
other side of the rear seat.
Someplace I have the schematics to do this and wire it so when the
engine is off, you pull from the aux battery, and when the engine
starts, it automatically starts recharging off the system.
-- 
Russ Wolfe
'71 FB AT
'66 FB MT
'64 T34 (not running)
'65 T1 (not running)
'05 KIA Sorento SUV
russw@classicvw.org
http://www.classicvw.org

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