Reg/Rec Question

[xsbean]

Gday there ladies and gents. I have a question regarding solid state reg/recs. I know there is a lot of threads in relation to this but none quite like the question I have.

Recently my XS charge PMA broke a mount and cooked itself. I have a spare standard 70-79 charging system that I was gonna replace it with. Question is, can the XS charge reg/rec that was with the PMA be used with the stock charging system? I'm familiar with the nylon screw hack and having to wire it all a bit differently but there is no real specs for this reg/rec that I can reference to.

Cheers legends!

 

[Its been a long time]

Gday there ladies and gents. I have a question regarding solid state reg/recs. I know there is a lot of threads in relation to this but none quite like the question I have.

Recently my XS charge PMA broke a mount and cooked itself. I have a spare standard 70-79 charging system that I was gonna replace it with. Question is, can the XS charge reg/rec that was with the PMA be used with the stock charging system? I'm familiar with the nylon screw hack and having to wire it all a bit differently but there is no real specs for this reg/rec that I can reference to.

Cheers legends!

No it can't. The PMA and the original generators work on different principles. (PMA = Permanet Magnet Alternator. The original factory system is a field excited alternator where a voltage is applied to the rotor to create the magnetic field.)

The better news is that to use the original charging system, you can use reliable, low cost automotive regulation hardware. That's what I would do.

On my 77 650D I used a standard bridge rectifier, automotive regulator and made new sub-harnesses for less than 20GBP all in, around 40AUD.

Here's a thread with the rectifier and regulator that I used earlier this year, works really well -

https://www.xs650.com/threads/bridge-rectifier-check-please.65832/

 

[gggGary]

Don't fall into the old; but it has the same color wires trap..................

 

[Its been a long time]

In fact, if the PMA type reg/rec is good, I would sell it and put the money raised to buy the required rectifier and regulator. Then use the original charging system. Possibly more reliable anyway and cheap to maintain.

(Fit new brushes to the rotor though).