Paging the Guzzisti

Am I right in thinking that Guzzi do different crankshafts for
different alternators?

If not then I have an ideal opportunity to ditch that bloody Ducati
thing.

 

What do you mean by that?

I'm not sure how much the crankshafts have changed in the last 40 years
but my round barrel that originally had the Bosch type will take late
80's Suprissa version.

My guess would be they're pretty much interchangeable up to the model
year you want to swap.

What does it look like? Got a picture?

 

I'm sure I read somewhere that the ends have different tapers for
different alternators, but I'd be delighted to be proven wrong. The
Quota engine's basically (I think) a 1000S lump.

Ah, Surprissa being a different make?

The alternator's a bit unusual in thet the rotor's a squat cylinder
abot 3" in diameter with permanent magnets embedded on the outside.
The single-phase stator is a ring with 14 inward facing bobbins/poles.
The stator is sandwiched between two alloy rings. Or would be if they
hadn't disintegrated. The whole assembly is bolted to the timing cover
with three socket screws.

Um. Not as such. I'd have to work out how to drive that Internet
thingy.

 

If you can email me a digital pic I'll happily shove it up on my Flickr site
for all to see.


--
Dan L (Oldbloke)

My bike 1996 Kawasaki ZR1100 Zephyr
M'boy's bike 2003 Honda NSR125R (Going)
Spare Bike 1990 Suzuki TS50X (Patio Ornament)
BOTAFOT #140 (KotL 2005), X-FOT#000, DIAABTCOD #26, BOMB#18 (slow), OMF#11

 

Ooh, ta. I CBA to do it tonight, but tomorrow...

 

IIRC, crankshaft end is different, one type is cylindrical, others are
conical, depending on alternator brand.

You could find many technical documents on the site of the Guzzitek ML
including Workshop manuals, part lists, RMT (Revue Moto Technique, a
technical study like Hayes or Clymer) and compilation of technical info,
howtos, etc :

http://guzzitheque.free.fr

You could also join the Guzzitek ML (french speaking)
http://fr.groups.yahoo.com/group/guzzitek/

 

OK, thanks. Looks like it will be an opportunity to learn some
technical French (big words like le, ca, etc).

Looking at my Quota supplementary manual, it appears to have a
cylindrical section for the alternator.

 

Feel free to use my email il you need some help with technical French,
my English is rusty but usually up to the task

From a previous reference you made (1000S motor), I presume it's a
1000Quota, the red/green one?

 

Yep, only mine's in the One True Colour.

 

Pics of Pip's bits can be found here:

http://www.flickr.com/photos/dan_l/


--
Dan L (Oldbloke)

My bike 1996 Kawasaki ZR1100 Zephyr
M'boy's bike 2003 Honda NSR125R (Going)
Spare Bike 1990 Suzuki TS50X (Patio Ornament)
BOTAFOT #140 (KotL 2005), X-FOT#000, DIAABTCOD #26, BOMB#18 (slow), OMF#11

 

That looks like the Suprissa thing on my Guzzi which was sourced from an
80s V65, IIRC.

They're supposed to be far more effective and reliable than the old Bosch
items. Mine's been on the bike 10 years.

 

Cheers, Dan.

 

I've just discovered that I've got the same crank diagram in my
generic Guzzi workshop manual and it's definitely different. The Quota
seems, from the diagrams, to have a parallel crank end and the older
ones have tapered crank ends.

I think for now that I'll have a go at rewiring it, but I'm not sure
when I'll find the time. It'll probably be easier than the CDI
alternator I once rewound because it's a lot fewer turns of thicker
wire. It's just remotely possible that the reg/rec survived, but I'm
not holding my breath.

 

Mine is definitely tapered. It just has a 8mm socket cap bolt drawing
the rotor onto the taper.

Yours looks like it has something more substantial.

I may have a spare reg/rec unit you can have cheap, if they're the same.
I'll take my camera to the lockup.

 

Is this like the one you have?
http://www.sweller.dynalias.org/saprissaregrec/

 

Unfortunately not. Mine's squarer - it's actually a Ducati one, like
the alternator. The mountings look similar, though.

Is that one capable of sustaining 25 amps?

It occurred to me that it probably doesn't matter if it's two or three
phase - I could simply leave one phase input disconnected. It would
definitely need to be designed for a permanent magnet alternator,
though.

 

Careful, you'll get that prat going again.

 

<looks up>

Where did that oddly sibilant noise come from?