Eletrickery |
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Wits
Admin Group Joined: 13 May 2014 Location: Shropshire UK Status: Offline Points: 627 |
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Posted: 14 May 2014 at 11:22 |
Found this on the Wild Guzzi site, may be of interest to some.
Written and posted by John Noble... http://www.thisoldtractor.com/guzzitech.dk/pdf/charging-around-the-circuit-john-noble.pdf Edited by Wits - 14 May 2014 at 11:27 |
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BMW 1200RTLC carbon BLack SOLD….
Breva 1100 2005 in Black SOLD..... St George's Telford Shropshire. |
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Gianni
Senior Member Joined: 16 May 2014 Location: Muswell Hill Status: Offline Points: 674 |
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Good reading.
The elusive resistor he mentions in the charging circuit is available as a Guzzi part. It comes with the relevant wires already attached. I have retro-fitted them (very easy - just two plugs) to early models and found they seem to improve low-end charging (more volts at lower revs) for no apparent cost. Any one else tried this and what was your experience?
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Le Mans 1, Spada, Cali 1, T3 Mongrel, Le Mans V, Quota x 2, Stelvio TT
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8731 |
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I've seen worse such documents!
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"Chicken nuggets don't dance on a Tuesday."
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pariah
Falcone Joined: 01 Jan 2015 Location: Leeds/Helsinki Status: Offline Points: 37 |
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Thanks, that's a useful document. Saved.
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17637 |
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Having now just read through that, I see that the elusive resistor is only there to keep the system going in the event of the charge warning light failing. I always wondered simply because I know of no other three phase electro magnet alternator which uses it.
It will slightly increase the start up current through the rotor coil, which might make the alternator produce an output at lower revs. However he also says the charge warning light can be replaced by an LED. This is nonsense as unless you also have a shunt resistor on the LED you won't get any charge from the alternator. Thus there is absolutely no point in doing it. Obviously putting a resistor instead of a bulb will work, but you would have no indication of whether the system was charging or not unless you also install a voltmeter.
Edited by Brian UK - 02 Dec 2016 at 10:56 |
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Brian.
Better 5 minutes late in this world than years early in the next. |
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DrD
Senior Member Joined: 15 May 2016 Location: England Status: Offline Points: 162 |
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My LM-II did not have the elusive resistor and I have placed a 2k resistor in
parallel to convince charging system the correct bulb in place as my console uses LEDs - my little orange voltmeter says the magic smoke is getting to the battery
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Le Mans thing (plus other stuff)
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17637 |
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I would have used a lower resistance than that, nearer 200 ohms. |
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Brian.
Better 5 minutes late in this world than years early in the next. |
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