Building a regulator

[pawthrick]

Hello,
I've got the original regulator and rectifier on my -72.
I must get rid of them and was thinking about building a regulator/rectifier.

I know about the chrysler setup, and the rectifier is not a problem.
However, the chrysler is not as cheap in Sweden as Volvo and Saab parts.
Me being a cheap ass I off course bught a regulator made for the bosh systems used for them.

Link to the regulator: http://bsniec.com/showProd.php?pid=50

Question:
Can someone tell me if I will have to unground the brush when using this regualtor.
As far as I'm concerned i will.
But I want to be sure.

Thanks in advance.
Patrik

 

[pamcopete]

pawthrick,

That regulator looks like it is supposed to be installed right in the alternator because it looks like the D+ and Field are actually brushes.

If you do figure out a way to use it, then you will have to isolate the brushes with nylon screws because that regulator provides D+ to one of the brushes and a regulated ground to the other.

 

[pawthrick]

Pete, thanks for your response!

Yep, it's the brushes right there. It's supposed to bolt right to the Bosch generator.
I'm planning to strip the unnecessary stuff off, including the brushes.

I've been thinking (that hardly ever works out by the way) and came up with this:

The Bosch generators' regulator is regulating the charging the same way that the original regulator does. By changing the current to the electromagnet and that way turn the charge up/down or on/off.

So if I leave one of the brushes grounded and connect like in picture no.2:
D- to ground, D+ to +12V and FLD to non-grounded brush.
Wouldn't it work?

Or have I misunderstood something?

As I've understood this thingy, it senses the voltage between D+ and D- and tries to regulate said voltage by changing voltage on FLD...

Or am I just beeing stupid here.... help me out.

 

[pamcopete]

pawthrick,

Not exactly. The brushes should be connected to the isolated brushes of the XS650 rotor. The brush marked FLD supplies a regulated ground to one of the brushes, the other brush gets +12 on the D+ brush.

There must be more to the wiring because it looks to me like the source of +12 for the regulator is missing.

I would suggest that you get a wiring diagram for one of the cars that the regulator is made for. There is also the question of the cryptic mention of the 120 Ohm resistor.

 

[pawthrick]

I'll fix some images.
Hold on!

 

[pawthrick]

Sorry, I'm witholding information here...
The resistor is between D+ and D-

Pictures...

 

[pawthrick]

Found a diagram...
I guess the lamp with the parallell resistor is a charging indicator. When the light goes on there's no charging...

But the D+, is that part of the sensing circuit?

I'll sleep on it.

 

[Jezuz]

Why not use example a huco 13 0216 regulator?

70-80 mercedes-benz used them, and many other cars! i got one in my xs and it was ~14 eur!

 

[pawthrick]

Jezuz,

Yeah, I bet I could get one of those, thanks!
I'll give this one a try before I start looking for a Huco.

 

[Jezuz]

You can try if your local biltema got those in stock, finland is sold out and not going to be in their program anymore!

 

[pawthrick]

I see now that I've totally misunderstood this mod.
I think I've got it figured out now.

Jezuz:
How did you hook that regulator up?
Was it like this?
Brush number one to +12V source (From ignition switch with an inline fuse)
D- on reg. to ground.
D+ on reg. to brush number one.
FLD on reg. to brush number two.
(Both brushes ungrounded like post '79 models)

 

[Jezuz]

I think i wired it up like this:

d+ to ignition switch
d- to ground
df to non grounded rotor pole

 

[pawthrick]

Yesterday I got hold of a Hüco 13 0216 regulator.
Worked like a charm!

Thanks for the tip!