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http://www.thisoldtractor.com/guzzi007/schematics/1967_V700_USA.gifHang on a minute, are we talking generator like my old Loop?The regulator is more a mechanical thing with coils and relays?A typical generator holds some residual magnetism which kicks things off
A generator regulator also has a cutout relay that disconnects it from the batteryWhen you say you flash the generator is it just once in the day or do you have to do it every time you stop?Strictly speaking a generator has an Armature and Fields no statorThe power is generated in the armature and rectified by the brushes, the field strength controls how much the armature produces.Usually the only time you have to flash a generator is if it has been apart and lost its magnetism, sometimes it will start up with the wrong polarity.I wouldn't like to say that the charge light never has to bump start the generator but the ones I am familiar with typically start by themselves, mind you I have never tried my loop without the lampeven though thats an LED.When I was an apprentice we fixed hundreds of generators for our work mates, we would typically run them as motors to test, occasionally if you ran one with the wrong polarity they would need re-flashing, back then some cars were positive, some negative ground.The field insulation sometimes breaks down to ground, they are quite easy to re-insulate with linen tape.Examine the commutator for any sign of uneven commutation like sparking at a particular spot, this is usually a short in the armature, we used to use a growler to test for that.I ask again, once you have flashed it is it ok when you stop or do you have to do it every time?
Rutgery-Have you tried cleaning the contacts in the regulator?You may have tried this but I didn't see it mentioned.Hunter
From my experience on Loops you don't mix Marelli & Bosch. Just a thought. I have seen bosch reg not work w/Marelli gen and visa-versa. One sys or the other not mixed.Maybe prove me wrong, don't care all my sh*t works. I have seen wires come out of brushes on Marelli gen.There is a ton of info in MGNOC Tips book #1, good luck
Not too sure if this is relevant , but when HD used generators , the generator armature lead was fed battery voltage via the generatorindicator light circuit (when the ignition switch was turned on) . This light would extinguish after the gen output exceeded battery voltage .Peter
Same as Roy I don't know bikes of that vintage.Charlie will probably be able to point you in the right directionFrom your diagram and looking at a V700 diagram, I assume that's it equipped with a DynamoFrom Carl's diagram it looks like the Stator is flashed via the charge light, if that light is out that's why you need to manually flash it, as Roy said an LED is no use unless you also added in a resistor in parallelI'd go over the connections and pay special attention to that charge light. It's odd that you need to flash it manually and then it all works, if the light is illuminating as it should and it's the correct wattage and not been modified then that should be doing the flashing for you.However I'm not a Dynamo guy I know very little about them beyond the basic theoryWait to see if older wiser heads prevailJohn
http://thisoldtractor.com/moto_guzzi_loopframe_voltage_regulator_-_fitting_a_bosch_voltage_regulator_to_a_magneti_marelli_generator.html
Thanks for all the thoughts and replies I'll check, clean and try the suggestions and will post here if/when I have some progress. Thanks for the link Charlie! I'm really hoping I won't have to fit non original parts to the bike, but if I cannot get the marelli unit working, I'll do this. Is your V7 fitted with Bosch or marelli charging components?
Well done, info on this thread handy for allAs another way to skin this cat, I wondered about late model belt driven Guzzi alternators, they sit in the vee, not sure if logical but perhaps they based this on old loopy drawings ?So I got in touch with Pete Roper, he’s sending me one to test, will post results, all I really want is light, not actually chasing lights (or watts).I know fitting small car alternators has been done forever but something about fitting new millennium Guzzi BB bits to the original design appeals to me , it might just fall in like it was made for the job !
From the photos I've seen of the "Guzzi" alternator, it's not that much different than those used on the Field/Nolan or Scrambler Cycle alternator kits. I'm running the latter on my V700.
martin, which alternator did you end up using in your bike? did the late model guzzi one work?
yeah I've no need of extra juice either, was wondering if I could get away without dealing with my broken generator bolt if I went to a lighter alternator and made a bracket that was also anchored to the dizzy mounting bolt...might be more trouble than it's worth.