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Charging system ??

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kwn306

kwn306

High Miler
Joined
Oct 28, 2008
Messages
551
Location
Virginia, USA
Before I consider a Moto Guzzi any further I need some more information on the electrical system.

I ride all year (daily commute is 140 miles) with electric clothing and gloves and the wife and I do it 2 up.

I need 280 watts to run the clothes, Moto Guzzi's web site claims the Norge and Stelvio both have a 550 watt charging system.

Subtract 280 watts from the 550 watts and that leaves 270 watts.....will either bike run on 270 watts (i.e., lights, ignition, computer....drive down the road without it dying or killing the battery?)

I have a similar thread going on the Norge section of Guzzitech as well. I could be wrong but I am thinking the ABS (additional electric draw) will be the back breaker on that bike.

Right now I drive a HD Ultra Classic that produces 600 watts @ anything over 2K rpm's. Does anyone know at what rpm's the 550 watts kicks in?

Thank you for your time in advance,

Kurt Nordstrom
Spotsylvania, VA
 
Hi Kurt,
I can't answer your electrical problems, but I can assure you that the Stelvio is up to hard commuting, I've used mine for work ,loaded with tools, 10 000 miles in 5 months. Getting cold now, I got heated grips and jacket. Givi are doing a taller screen which will be good. I traded in a 1550 HD Ultra glide classic for my Guzzi. When the salted roads come I'm on to My ST1100 Pan European.
 
The older fuel injected Guzzi's have a smaller crankshaft speed alternator, at 350 watts at >3500 RPM. At high RPM, it would run my entire system and two 80 watt electric vests. It I turned on my 35 watt each (70 watts) of driving lights, that was it. It would keep up, but if I slowed down, it would not get that charge back in the battery. So from that math, the basic fuel injection, pump, coils, lights, etc., uses close to 100 watts, my vests 160, and the lights 70, for a rough total of 350.

So, the injection and lighting is roughly 100, you are adding 280 (that is a bunch, must be heated leg warmers too) that is 380 total. That should give you roughly 170 watts of reserve AT SPEED.

I have NOT seen info on the newer alternator related to the output current and the RPM, but, the old alternator was limited to crank speed. The new one is belt driven, so the RPM should be improved.

And the accumulator pump in the ABS is not running full time, so that should not be an issue.
 
Could someone merge this thread with the other ("Norge Electrical capacity" from the N/B/S tech section) into the general tech section? I think the discussion applies to all newer (vs. older) Guzzis.
 
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