High output regulator options 120W ?

[hendy]

How do they perform if you use a big capacitor instead of the battery? That's obviously maintenance free but also obviously gives no power unless the motor is running.

[warts]

Rather than me recycle stuff, here's a link to the guy who was one of the first to offer the Mosfet regulator as a solution to the sometimes inadequate OEMs.
He has lots more stuff on his home page, but the link is to the FAQ, covering both single and three phase generation.

http://roadstercycle.com/Shindengen%20M ... 0about.htm

You can find far more reports on the various single make Triumph, Suzuki and Honda bike sites. A big user base, to test out the product, and from different suppliers.

[purple_pill67]

Its Lambretta Tuning group on Facebook/Anthony Tambs new 180w 3 phase stator he's testing.
He does 120w versions that are supposed to be good (im on the first version BGM did DC that has been all good which i run with an originally indian heavy long fin that has had the fins trimmed to short length and also midweight)

Ah ok, I had an initial reply from him but then couldn't get anything after that despite saying "TAKE MY MONEY" . Shame as I really prefer to support local small run guys like him whenever possible.

From what i gather, he works full time and does this stuff in his spare time. I think he is away for a week or two at the moment too.
I have never used him but know people who have and have only heard good things.

[RManson]

I'm using a SH775 R/R on my Rotax 300 bike and it works great. It's a true series-style regulator which means it doesn't shunt the unused power from the stator to ground or back to the battery, putting less strain on the stator. As opposed to the FHxxx series R/R which are MOSFET units but still of the shunting variety. The shunting is what makes all the heat and causes most of the problems. This is in conjunction with a Gran Turismo Aprilia ignition (3-phase) so no problems there but supposedly the SHxxx and FHxxx units are compatible with single phase setups as well. This is also on a system with an electric fan, electric water pump, Halogen headlight, Yamaha clocks and ECU, etc. More electrical components than the standard bike to say the least so I would think it would make a very sensible upgrade to most Lambrettas.

Any how, my two cents just to say that it can be done and as far as I can tell well worth it.
RM

[warts]

Its great to hear that some one has done it - and it works. Thanks.

I have always imagined the mosfet ones in the FH series used PWM to go momentarily open circuit to control excess output.
The reports on Triumph and BMW sites is that it works very well, both improving the low speed charge rate and stops the stators self destructing.

The true series ones do look somewhat bigger.

[RManson]

That's my best guess as to how it works as well. Somehow it shuts down the stator as opposed to just shunting the unneeded power to ground.

The FHxxx R/R's are very similar in size to the SH775 series-style, though I don't have both to compare, just what I've read on the interweb. However, be aware that the Series SH775 is limited to 30 amps and 10,000 rpm. The bigger SH847 is rated to 50 amps and good to 16,000 rpm. The amp rating probably won't be an issue for most, but the rpm range might be. Something to think about...

RM