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Discussion Starter #21
Thanks stlemans I feel reassured.

Now lets hope there's some more info to come regarding specs on other Ducati model regulator rectifiers and whether Ducati are using mosfets across the range these days.
 

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crozzer-
greenmonster-
I'm not sure why you see this as disturbing, if Ducati are now using MOSFETs it's probably a good thing. My original post of this article was as a suggested remedy for older Ducatis like mine which suffer from meltdown primarily due to inappropriately rated wire gauge and poor connectors exacerbated by insufficient air flow to help dissipate heat.

It may well be that Ducati have been using MOSFET units for some time now, I don't know. I don't even think that there were necessarily models post 1999 using SCR units which had a propensity for meltdown.
I agree.
And I don`t mean to degrade your research, most grateful.
 

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I talked to my dealer today.
Not a bad idea, is like checking tha manual sometimes..... :)

They nowadays sells 2 Shindengen units:
1 w 3 yellow wires & 1 w 2.
If I got it right on the 2 wire one:
Shindengen no SH579B
Duc sp part no 5404111C
130 Eu f that, 115 f 3wire.
2wire came in 2 versions: SS/M & 916/748, wiring differ.
No possibility f warning light on both IIIRC.
 

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Discussion Starter #25
Going by that coding I'd hazard those R/R's are SCR type units, not MOSFETS.....

Yep, just checked it at shindengen website and the "SH" I think refers to "shunt". There are both "shunt" and "series" type SCR reg/recs which are bacically the "older" technology.......... and then there's the MOSFETS which if from shindengen should be FH***
 

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Mailed my father, old car electrics mech, this thread.
This mod should work.

3 things he said:
1. This construction shuts charging down when all is getting the juice they need.
= no heat & magneto field down- little bit more power (less restricting crank rotation).
2. 2 leads mean more harmonic distortion than 3, unsure what it could disturb.
3. He asked why
http://www.shindengen.com/resources/content/1/1/1/1/documents/FH012 Data.pdf
had the fuse on + to battery instead of the loaded stuff?
I dunno, had no idea these reg/recs where so complicated.
Anyone?
 

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I talked to my dealer today.
Not a bad idea, is like checking tha manual sometimes..... :)

They nowadays sells 2 Shindengen units:
1 w 3 yellow wires & 1 w 2.
If I got it right on the 2 wire one:
Shindengen no SH579B
Duc sp part no 5404111C
130 Eu f that, 115 f 3wire.
2wire came in 2 versions: SS/M & 916/748, wiring differ.
No possibility f warning light on both IIIRC.
Yes Ducati has a Kit for 300 bucks and it is the SH579B.
Seems to be the old setup with larger guage wires.
So upgrade for 300 - not so much.

Saw this kit for the FHO12aa....150 bucks shipped
http://roadstercycle.com/Shindengen FH012AA Regulator upgrade kit.htm

I'm ordered it. Will be putting it on a 97 916 single phase with melted wires and connectors.
 

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Chilehead
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Will do upgrade

I havent got any 110 % anwers to my maybe not so knowlegdeble questions
but I will go w the Shindengen FHO1200A on my 1phase 1991 907IE.
 

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Saw this kit for the FHO12aa....150 bucks shipped
http://roadstercycle.com/Shindengen FH012AA Regulator upgrade kit.htm

I'm ordered it. Will be putting it on a 97 916 single phase with melted wires and connectors.
I live about a 1/2 hour from Jack (roadstercycle). I'm heading up there in about 2 weeks to put one of these on my '95 916.

I'll take pictures and measurements and let you know how it goes.

I also found this site R/R Connectors if you're not good at crimping/soldering like me :)

roadstercycle's kit



eastern beaver's kits



 

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From st2lemans:

>>If thew device if rated at 50A 3p, then each leg is averaging 17A.<<

>>When used to regulate 1p, only two legs are used, so it can nominally handle 34A rather than 50A.<<


From http://www.ducati-upnorth.com/tech/chargingfailure.php :

>>It's important to note here that, given the obvious need to charge the battery, the stator wires will have to pass 29 amps (350 watts/12 volts) continuously<<

So,
if 29A is the max capacity current that the Duc 1phase alternator can produce,
how many Ampere do you get when you only use 2 pins in the Shindengen FH 012?

I may be slow when it comes to electrics but I just wanna know & b sure.
 

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Chilehead
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From st2lemans:

>>If thew device if rated at 50A 3p, then each leg is averaging 17A.<<

>>When used to regulate 1p, only two legs are used, so it can nominally handle 34A rather than 50A.<<


From Charging System- Ducati Up North :

>>It's important to note here that, given the obvious need to charge the battery, the stator wires will have to pass 29 amps (350 watts/12 volts) continuously<<

So,
if 29A is the max capacity current that the Duc 1phase alternator can produce,
how many Ampere do you get when you only use 2 pins in the Shindengen FH 012?

I may be slow when it comes to electrics but I just wanna know & b sure.
29A

Tom
 

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Great, thx.

If you use a smaller Shindengen FH 3phase, like a 30 or 40A one, you also get 29A when using only pins?
Or can a 30A only produce 10A per pin?

Just to b even surer....


>>Of course, 1p has much more ripple than 3p, so the peak currents will be higher and may stress the RR more.<<

Is that one of the reasons manufacturers went from 1 to 3phase, less ripple?
 

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Further investigation leads to:
40/30A regs could only give 20/15A if using only 2 pins.
3phase gives less ripple.


EDIT:
>>40/30A regs could only give 20/15A if using only 2 pins.<<
WRONG, see below.
 

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@DropLock (or anyone else who has done this mod). What did you do with the two other wires (black/white to the combo connector)? Are they just for the indicator light?





Is your charge light functional?
 
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