Shindingen Regulator/ Rectifier Markings - Meaning What??

[pertonpc]

Hi Folks

My Z650 is wearing an original Shindingen REG/ REC unit which is marked on the factory sticker as

SH521 - 12 2.3

Just got hold of a new spare which came in box with right part code (21066-029) and looks identical - but sticker is marked -

SH521 - 128 8.2

Are the two units interchangeable - I am guessing they are both SH521 model but is the rest a date code or what?

It doesn't look like the 8 has been rubbed off the original one.

Can any wise men on these units please enlighten me??

Thanks from Mark

[Garn 1]

Pretty hard to check those Shindinger marking's out.
If the 650 has a 3 phase alternator (as the z1).
Then, if they are both 6 wire units of the same physical size, I would run with it. Easy to check once it is connected.
RegardZ.

[PAULJAC47]

Some 650,s run single phase i seem to recollect!

[pertonpc]

Thanks Garn
They are both 4 wire units and size/ fitting holes matches exactly.
Three wires in a block connector go to the generator and a white wire with red stripe comes out on a bullet connector into the loom.
No earth wire - does that mean it gets earth through the electric panel it is bolted down on??

[pertonpc]

Thanks Paul

I think it's only B1 models with the early electrics. Mine has version two (is it called three phase??)

B1 rectifier has contact points in it I beleive.

From Mark

[GUYZED]

Mark...i found one of those REG/REC's in the garage the other day...with its sticker still on it...i'll have a look what it says tomorrow.

[Rich]

SH means shunt - the newer FH ones are Mosfet. looks like single phase the black should be earth, yellow connects to the alternator and red/white out put. NO voltage sensing. 521 is the model and current handling code - 12 is for 12V and the other n=bits are probably just batch codes.

[PAULJAC47]

Agree with Rich, Single phase job !

[GUYZED]

There you go Mark...some pics of my REG/REC




It does look like a B not a 8 on mine.

[pertonpc]

Ok Guys
here's a pic of the B1 type regulator - only used that first year - it has an armature and points inside the cover which need cleaning and adjusting...


and here's a quote from a Z650 site about the changeover to my type -

"The charging system was changed from a three-phase system to a two phase and the regulator and rectifier was now a combined unit. (regulator with cooling ribs)"

so I guess that makes the B1 unit three phase and my one a two phase - no mention I can find of a 650 with single phase unless someone out there can spot it.
What phase is a Z1 generator anyhow??
and why did later bikes use fewer phases - I thought more was generally better in most technologies??

[pertonpc]

Oh yeah
and this guy got the wrong routing for his carb vent hoses and the wrong colour hose - which was what I was basing my set up on until Paul corrected me GRRRRRRR!!!
Found some nos pink ones now though

[pertonpc]

Hi Guy
Just spotted your pics thanks.
That's interesting on the sticker - I think what I quoted as "8" could actually be a "B" now you have magnified it a bit more.
My new one matches your pics really well - did this one work on your 650 or is it an untested spare one?