Laverda Jota Ownership, second time around. (ramblings)

[Dellortoman]

Let's see how wrong I can be, a stator is the copper wire coil that rotates around a magnet...

Seems you can be quite wrong. But your prediction of wrongness was actually right 

A stator doesn't rotate around anything. It just sits there and appears to do nothing, in a sense. The name "stator" comes from the fact that it's static. You're correct that the stator has copper wire windings though. The rotor is the bit that rotates.

The rotor has a bunch of permanent magnets in it, and it spins inside or outside the (static) stator. The rotating magnetic field induces current into the stator's copper windings. But because magnets have north and south poles, the current goes one way, then the other way as the magnets pass. That's alternating current, and the voltage increases with revs. The RR (regulator rectifier) sorts it out into DC at the correct voltage.

[Laverda SF]

Dellortoman: Russian Igor solutions work sometimes ;o)

Doesn't mean in the future you have to dissemble the Generator/Alternator, clean, Lube, replace the brushes and polish the commutator contacts on the stator rather then paying for a new charging unit and regulator.

Just remember to use a pin to lift the brushes off the commutator when dissembling and reassembling.

FUCK - I had to pay $900 for a thrashed starter over suck wiring on my 750 SF0 back in 73 - Imported from the Breganzie Factory. I paid $1,600 CDN for my New SFO back then. Don't think I don't take Charging Circuits seriously.

Off course I had to clean that generator 2 or 3 times in 45 years and replaced the regulator once.

Dried out rotting gaskets are the biggest threat for a Breganzie when you don't use her.

[Dellortoman]

Permanent magnet alternators don't have commutators or brushes.

[Laverda SF]

Really  - I'm an old Foggy and you're on your own ;o)

If you can't fix it - What's a new one cost ?

Could be a simple as a burnt out Mosfet or Diode on a Circuit Board. Perhaps in the Internal Regulator Rectifier Circuit.

Can't imagine the Breganzie Factory using this Tech.

[Dellortoman]

Can't imagine the Breganzie Factory using this Tech.

They used exactly that tech on the triples. They had 2-phase alternators and rectifiers, but no voltage regulator. Alternator output was selected so that voltage regulation was not needed. It was just (barely) enough to run the bike and keep the battery charged. Details varied slightly between HKZ and BTZ ignition models, but basically they used one phase coil of the alternator to run the ignition, with the second phase coil switching on with the lights. Any surplus went to charge the battery. Voltage was held reasonably stable by having a massive battery.

Many owners have installed upgraded alternators since the bikes left the factory, with smaller and lighter AGM or lithium batteries, so voltage regulation has become necessary. That's why you see regulator rectifiers on many Laverda triples nowadays.

[cbertozz]

Well Red has come to the rescue with a new stator, whatever it may be 

In other news this is my "crate" to get the bike back to the East after the Nationals. I am looking forward to riding it again.

[Piranha Brother 2]

Going with a transport company, Carlo? How do you get it to them? Logistics of moto transportation. And what's the beefy, black alloy frame to the right?

[cbertozz]

Going with a transport company, Carlo? How do you get it to them? Logistics of moto transportation. And what's the beefy, black alloy frame to the right?

It's coming back in the QLD classic racing mob, they have a container organised. No container coming back to NSW. I'm in NSW so haven't seen it in person, a friend is handling it for me.

[cbertozz]

Fun run up to Blue Mountains.



More pics here:
https://photos.app.goo.gl/7kSNfsSdEfHV8kJV9

[Tippie]

That's great. Not many clubs get so many Lavs together for a Sunday run.

[Vince]

Not that long ago there were 3 regulars that would turn up. It's great to see it getting bigger.

[cbertozz]

I need to sneak back and practice so I can keep up with Marty and Chris!

[cbertozz]

That's great. Not many clubs get so many Lavs together for a Sunday run.

It was great to see so many shiny Laverdas, come to think of it I've never seen more than three in any one place at the same time.