www.zxrworld.co.uk

Just recently as the temp outside has got bad I have had problems with the battery/ charging system. I went out with a friend couple of weeks ago and we were giving it some welly then all of a sudden I lost all power and the bike stopped. We swapped batteries and it started fine. I returned the bike home and tested the output voltage from the charging system as described in the H model manual. The output was 14V at 4000rpm as expected so I thought everything was fine and I had had a poor connection. The battery charged up fine with a trickle charger.

so I took her out again last night to give her a run. All started well, went to local supermarket taking it steady. When I got back on the bike I gave it a bit of a thrashfor 10 mins then wen't for some fuel. When I went to start the bike again it was dead.

I can't understand it because it seems to be the high revs that kills the bike, though I can't be certain. I'm gonna test the output from the alternator through out the full rev range when weather is better. I am also gonna test the resistances of the regulater rectifier as the h model manual describes. Has anyone got any idea's, i've looked through the forums but no similar problems seem to have come up.

At high revs tells me that your battery is weak, a battery can still charge up if it's faulty but may not hold the charge. Did you try a thrashing session with your mates battery?

Not yet as he needs it for his bike comuting, I'll give it a try.