SOHC.co.uk Forums > CB350/400
Ignition - or lack of!
mike the bike:
What is the battery voltage with the ignition switch on and kill switch off?
Nurse Julie:
All I have to do now is put it all back together That's the easy bit though
Sent from my I3312 using Tapatalk
Oggers:
Nurse - I feel your pain!
K2-K6:
As a general check for the battery's health, remove from connection to the bike, charge it slowly overnight, disconnect it and then check voltage after about 15 minutes. This should give you a base level reading (without residual charger effects) of between 12.6 to 12.9 volts.
Between 12.1 and 12.5 MAY be serviceable in warmer temps but not winter.
Without it connected to anything, check again after 24hr and it should be within the 12.6 to 12.9 range and should stay there after each successive 24hr period. This would show the battery is ok. Anything drifting lower over subsequent days indicates it's not going to sustain the intended use.
Below 12.0 volts after 24hrs and it's generally knackered.
Lobo:
Oggers, time to get the meter out again? 🙁
Thinking out loud, I’m wondering whether you’ve fried a coil in your point testing... totally possible if the points were closed too long and 12v continually flowing through it.
I DON’T know however, whether such a failure can cause the BLACK/WHITE input to short circuit to the BLUE ... which might then apply 12v directly across the points and effectively short the battery? (see attached with short shown in red). Better qualified folks here can comment on this... tho’ a meter will certainly verify one way or another. (If indeed such a thing has happened, I’d honestly expect your Main 15A fuse to blow first...)
2nd possible failure is that the points insulation’s have failed in some way, ie the floating switch part is permanently connecting to ground. (Ie check the fibre washers all correct etc). Again... a meter will verify, and again, it might explain the unreasonable battery discharge.
Simon
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version