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cb400 problem
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Most bikes these days use permanent magnet alternators, the alternator output increases with revs, and the R/R just dumps the excess power as the revs increase. Older ones used electromagnets in the rotor a.k.a. 'field windings' and the R/R could vary the current in the field windings to control the alternator output.
IF your bike has field windings and this R/R isn't designed to cater for them, you're screwed I'm afraid
Are you absolutely sure this R/R is suitable for the model and year (and sometimes changes are made during a model year so you'd need to check the VIN as well.)
A bike with permanent magnet alternator and no field windings will just have 3 yellow wires from the alternator. If it has field windings then it'll have a couple of additional wires. Where do the extra wires go?In Cavan there was a great fire / Judge McCarthy was sent to inquire / It would be a shame / If the nuns were to blame / So it had to be caused by a wire.
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Most bikes these days use permanent magnet alternators, the alternator output increases with revs, and the R/R just dumps the excess power as the revs increase. Older ones used electromagnets in the rotor a.k.a. 'field windings' and the R/R could vary the current in the field windings to control the alternator output.
IF your bike has field windings and this R/R isn't designed to cater for them, you're screwed I'm afraid
Are you absolutely sure this R/R is suitable for the model and year (and sometimes changes are made during a model year so you'd need to check the VIN as well.)
A bike with permanent magnet alternator and no field windings will just have 3 yellow wires from the alternator. If it has field windings then it'll have a couple of additional wires. Where do the extra wires go?
Ah bollox **** tits arse. Im not home till tomorrow so ill double check then. Thanks ninja
All the wires went into the stock rr. 3 yellow. 1 red & 1 green0 -
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Those readings look very good, the voltage is going up to the required level at a nice low rpm (important for town riding) and isn't going above that when revved higher.
If you had an older type alternator with field windings, and there was no current going through them, then you'd get little or nothing out of the alternator.
I dunno if this bike has permanent lights on. If not, did you see a difference in voltage between lights on and lights off? You might get a bit less voltage with the lights on but it shouldn't really drop below 14V
Still though, it would be interesting to know where the 'mystery' wires went - I know they went to the old R/R at one end
I meant where do the other ends go! It looks like you're in the clear, but it'd be interesting to know. In Cavan there was a great fire / Judge McCarthy was sent to inquire / It would be a shame / If the nuns were to blame / So it had to be caused by a wire.
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Those readings look very good, the voltage is going up to the required level at a nice low rpm (important for town riding) and isn't going above that when revved higher.
If you had an older type alternator with field windings, and there was no current going through them, then you'd get little or nothing out of the alternator.
I dunno if this bike has permanent lights on. If not, did you see a difference in voltage between lights on and lights off? You might get a bit less voltage with the lights on but it shouldn't really drop below 14V
Still though, it would be interesting to know where the 'mystery' wires went - I know they went to the old R/R at one end I meant where do the other ends go! It looks like you're in the clear, but it'd be interesting to know.
The lights are always on. I forgot to mention that the headlight doesnt flicker or brighten when I rev now with the new rr:)
Yeah the problem was the old rr was working up to say 5500 rpm but over that it didnt charge the bat. So when I arrived into work after doing mostly 6000 rpm that bat was dying.
LOL:pac: The ''mystery wires'' I havent a clue. one is red/white & the other is green. At this stage if the bike is working and I can start using it again the wires can be going to another dimension for all I care:)
P.s, Im 99% sure someone is going to tell me that the ''mystery wires'' are highly important and my bike is at risk of blowing up if not reconnected:p0 -
Still though, it would be interesting to know where the 'mystery' wires went - I know they went to the old R/R at one end I meant where do the other ends go! It looks like you're in the clear, but it'd be interesting to know.
They aren't mystery wires, the Red/Wh and Green in the bottom of the stock plug are the outputs to Battery from the old Alternator, via the Fuse/starter relay
Yellow in to the Reg/Rec and Red/Green out.
By fitting new wiring you will also avoid a problem with older electrics which is high resistance in the connections.
Modern plugs are much better sealed and resistant to water ingress.
Plus the new Mosfet Reg/recs are much better then the SH type.0
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