Superbyke rbp running problems (low voltage)

[hunty997]

In my previous post about the bike not running right, someone suggested that the regulator / rectifier had blown. But changed this to a new one and i still have the same problem.

When the bikes running the battery is making just over 7 volts, I have also checked the wires running to the regulator. and 3 are making positive feed and one negative, I'm unsure if this is normal or not. I have changed the main fuse countless times, so it cant be this. If anyone can point me in the right direction i would be most grateful.

Thanks Corey

[lihp]

Check wiring from alternator to the R/R and voltage, also check your earths.

[N cee thirty]

whats the voltage reading at the reg? well the wires going in to it
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[hunty997]

I shall go and check the voltage going to the 3 wires now.

Also where is the alternator on the bike. As i couldnt find it lol.

[N cee thirty]

usually next to the engine on the leftside
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[hunty997]

Right Ive been out with a multimeter and checked the voltage running to the 4 wires. The readings are

Green - 0.09-1 volt
Red - 4.4/4.6 volt
white - o volt - 5 volts (this was jumping from 0-5 and not staying at a stable voltage)
Yellow - 1.20 volts

And the wires going from the R/R are

Green-green
yellow-yellow
red-red
pink-white (both the new R/R are pink not white)

[N cee thirty]

did you do it at idle and revving?
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[hunty997]

no i didn't, I will try this tomorrow when i had time, the bike was revving at around 2-3k. thanks to me leaving the choke on while testing

I still have no idea what it could be

[N cee thirty]

could be anything seeing as its a chinese bike

dodgy wires or knackered generator,easy fixes though
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[hunty997]

Yeah i think it was a bad idea buying a Chinese bike. Once running properly i might think about buying something a little more. well ermmm reliable lol

[finpos]

1) You can't measure anything at all with a flat or knackered battery. What is the battery voltage without the engine running? Does charging it make any difference?

2) Without a wiring diagram in front of me, the 4 wires you looked at coming from the alternator are probably a) the power for the cdi b) the trigger for the cdi and c) two charge coils. The charge coils will be putting out AC not DC. If you measure again on AC you'll probably get between 5 and 50Vac depending on revs. You'll need to trace the wires from the alternator to the CDI and to the reg/rec to guess what's going on. Also, does the headlight work with the engine off?

f.

[chris-red]

Is it a 6v system?
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[hunty997]

[chris-red]

Look at the battery see if anywhere on it is says 6v on it. If it is a 6v system charging at 12v is not going to do it any good.
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.

[hunty997]

The battery says on it charge at 12 volts for "selected charge rate and time" so i guess its a 12 volt system, unless the person who owned the bike before me has put a 12 volt battery on a 6 volt system. Ive only had the bike for around 2 months.

There isn't any specifications on it as i tried testing it at work today. And couldn't work out what ampage it runs at..

[nightshaddow]

ok so this bike is a 12v system from the sound of it you have a bad earth somewhere had this on one of my bikes and did a similar thing, if you in need of the generator i think i got one in the shed will just need removing from the casing as it is cracked but i would check the earths first also the conections from the generator to the loom very comon for the contacts to go bad
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"WHAT DO YOU MEAN 100 MPH THATS IMPOSSIBLE Its chinese OFFICER."
Current rides CB 125 TDE(the next project) NS125RK ( now on the road ) CB125TDC (soon to be project 17) melody ( the nephews )

[finpos]