New battery or generator thingy?

[simon1221]

You must be bored of hearing about my knackered TZR, but one last question:

I charged up the battery yesterday, went out today and the lights still dip when i turn the indicators on, even with the engine running.

Ah and also the revs drop when the lights are turned on, but that is the YPVS motor not working well...

Is it the battery or the generator thing? I did have to top up the battery recently but the level was almost halfway.
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DNA50 (sorry) ->> TZR125l >> GPZ500S

[Kickstart]

Hi

Just about any bike will slightly dim the headlights when the indictors flash. A small battery will make this effect far greater (and the TZR battery is only small, as it does not need to power a starter motor).

The ypvs motor only opens the power valve at high revs (other than the self cleaning when you turn the ignition on) so should not affect the revs at low speed at all.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[simon1221]

but for some strange reason, the bike seems to go faster with the lights off
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DNA50 (sorry) ->> TZR125l >> GPZ500S

[Scotsman37]

You know what it means that your spark plugs are sparking more efficiently because their receiving the correct amount of power!

Have you installed the correct wattage of headlight bulb for your model of bike as it maybe drawing more power than what the original one would have done?

Yes, it could be due to a faulty alternator, but I would check & clean your connection blocks with WD40 first and test the wiring for a fault, if need be, and so you'll need to use a multimeter to check both of these possibilities out.

With a multimeter you will be able to tell if the alternator is charging the battery succesfully while the engine is turned on according to your bike's specifications in the service manual.


After you've cleaned all the connectors & wiring is okay and you still discover that the voltage is below what is specified in your manual then it's your alternator that's at fault and therefore you need to inspect that either by yourself or by a qualified mechanic.

[alains]

the best way to check your battery is :
- put it on charge slowly for 10 hours , let it cool down for an hour and check voltage (must be 12.8 to 13.2 volts)
- let it on side for a day and re-check voltage , il you've lost 0.2 volts or more , your bettery is dead
- re-fit on the bike and if your bug continue it's 2 possibilities :
a) a lack of charging , so must check alternator , regulator & diodes
b) a loose feeding or a short-circuit component wich is obviously the hardest thing to detect
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the worst day fishing is better than the best day working

[Kickstart]