Post by cartwrightzrx1100 on May 26, 2014 13:20:43 GMT
I was not a happy bunny last Saturday morning, all set to go out on the charity motorbike ride, a beautiful glorious day and then the bike decides to have an electrical fault. 
Bike fired up no problem, went to the garage to fill up with fuel, no problem. Then went to the bank to pay in some business cheques, came out and then the bike wouldn't start. So resorted to a bump start, it fired up and I headed home immediately. Once the bike was turned off it wouldn't start again, appeared to not have enough juice in the battery, diagnosed the problem as either failed battery or alternator or both!?
I've subsequently charged the battery then fitted it back on the bike, hit the start button, heard a click from the relay but nothing else. Turned on the lights and the ignition lights went out completely. So in the first instance I guess I need a new battery?
Mate of mine came round with a battery starter pack and volt meter, engine fired up straight away and with the motor running the voltage shot right up to over 18v. Therefore diaognosis is a completely knackered battery as a result of it being overcharged due to a failed voltage regulator.
The regulator sets a top limit to the voltage that goes from the generator to the battery (i.e. fixed at no more than 14volt for a 12 volt battery) and the rectifier converts the alternating current of the generator into the fixed DC voltage the battery needs. A failing regulator can cause damage to your battery & electrical system as it is not supplying the correct voltage. The battery may be damaged beyond repair as it gets too hot and you may find that bulbs are brighter than normal & have a shorter lifespan. Whereas a failing rectifier will prevent you battery charging as it will no longer produce the required DC current
Repair Cost:
1 x Motorbatt AGM Battery @ £45.00 plus £5 carriage from e-Parts
1 x Voltage Regulator unit @ £135.00 plus £3 carriage from M&P

Bike fired up no problem, went to the garage to fill up with fuel, no problem. Then went to the bank to pay in some business cheques, came out and then the bike wouldn't start. So resorted to a bump start, it fired up and I headed home immediately. Once the bike was turned off it wouldn't start again, appeared to not have enough juice in the battery, diagnosed the problem as either failed battery or alternator or both!?
I've subsequently charged the battery then fitted it back on the bike, hit the start button, heard a click from the relay but nothing else. Turned on the lights and the ignition lights went out completely. So in the first instance I guess I need a new battery?

Mate of mine came round with a battery starter pack and volt meter, engine fired up straight away and with the motor running the voltage shot right up to over 18v. Therefore diaognosis is a completely knackered battery as a result of it being overcharged due to a failed voltage regulator.
The regulator sets a top limit to the voltage that goes from the generator to the battery (i.e. fixed at no more than 14volt for a 12 volt battery) and the rectifier converts the alternating current of the generator into the fixed DC voltage the battery needs. A failing regulator can cause damage to your battery & electrical system as it is not supplying the correct voltage. The battery may be damaged beyond repair as it gets too hot and you may find that bulbs are brighter than normal & have a shorter lifespan. Whereas a failing rectifier will prevent you battery charging as it will no longer produce the required DC current
Repair Cost:
1 x Motorbatt AGM Battery @ £45.00 plus £5 carriage from e-Parts
1 x Voltage Regulator unit @ £135.00 plus £3 carriage from M&P