19 replies to this topic

[mini13]

lots of info here.

 

 

http://www.turbomini...p?p=vt&tid=2995

[KernowCooper]

As AC has already said the light weight alternators will struggle to cope under normal road conditions, and you'll find the battery is providing the missing amps below a certain revs until its drained, as the alternator wont be able to replace the charge quick enough. They appear to be doing the job for a short while until the battery is depleated or you have trouble starting. Take the revs up to 3000rpm and do a test on the totals amps and you can see if its a negative charge going into the battery.

 

As a example 4 100w Cibies would be 34amps on their own and a 12v coil is 4amps, standard 55w headlights is 9.2amps, side lights just under 2amps, brake lights 3.5amps. So you can see you need a big alternator to have any hope of charging a 12v battery.

 

To the original poster if you volt meter is accurate then at 15v your into the terrority of boiling off acid in a lead acid battery and a very short battery life and failure

[Midas Mk1]

Thanks for the replies guys!

 

Spent ages last night on it, checking over all the connections, everything seemed tight, just tidied up a few wires near the fusebox.

 

Now on idle its at 14v, and with the headlights on its still 14 when above 1200rpm, bizarre but its what I was needing! 

 

Will have a thorough checkover at weekend though, and try load it up with stuff to see how it fairs! 

 

Thanks

[mini13]

sounds like somthing was loose then.

[KernowCooper]

High resistance ?