Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Dead bike P2

[TopiToo]

Hello

I have been checking a few things, with a multimeter
and as it stands I think the problem could well be
the wiring between the alternator and the regulator.

with a new battery wired up I was getting readings of 13-14.5v at idle
however as soon as I opened the throttle to 3000rpm
the readings moved to 15-16v (and I think I am right in saying at 3000rpm the norm
is 14-14.5V)

so what I would like to know is what is the maximum voltage output of the alternator
the Haynes states 13.5-15.5V, so I guess that in mind my 16V is about right for the alternator.

The increase in V suggest to me that the alternator is powering the bike Not
the regulator, if that makes sense?

(open throttle Speedo, lights etc go haywire) overcharging

I understand as I have done many a time that putting the multimeter
on the battery, to some extent gives unclear readings, as if the alternator
is not charging the battery properly, the battery will run say 50miles before it dies.

so the plan is to check/cut back the alternator wires again, run a fresh set via
the meter/battery and work from there.

I need to know where the power is going, and what’s causing it as it stands the
Rectifier is not in the link, (and after a call to electrex to ask how to check, was told
"our parts never fail its a wiring problem you have") wait and see I know of one DSC member who returned one because faulty.

maybe I am getting some where?

I hope so just repaired the TV remote after a hot chocolate spill ( and telewest want £12.50 for a replacement) the cheek . . .

regards

TopiToo

[TP]

Originally Posted by TopiToo

..
I hope so just repaired the TV remote after a hot chocolate spill ( and telewest want £12.50 for a replacement) the cheek . . .

regards

TopiToo

Dear oh dear Steve, at least the remote works again!

Sorry, I can't really help you with your wiring etc, I'm a total numpty when it comes to these things I'm afraid.

[TopiToo]

Originally Posted by TP

Dear oh dear Steve, at least the remote works again!

Sorry, I can't really help you with your wiring etc, I'm a total numpty when it comes to these things I'm afraid.

Hello TP

the romote is more improtant as it's GP weekend and I stand to will
a kabab (with chips) if Rossi does not win.

sad but true . . .

TopiToo

[PeteB]

Steve,

U2U for the helpline!!

[TopiToo]

Originally Posted by PeteB

Steve,

U2U for the helpline!!

Hello PeteB

will do thanks mate.

I am not very good at expaining myself, but in a round about way
hope I am getting close

TopiToo

[rockhopper]

Best bet is to download the fault finding chart from here and follow it step by step.

https://www.electrosport.com/electro...t_finding.html

[Jasper]

I sent a Faulty Reg back.New one worked fine.

[TopiToo]

Originally Posted by rockhopper

Best bet is to download the fault finding chart from here and follow it step by step.

https://www.electrosport.com/electro...t_finding.html

Hello rockhopper


Thank you for the link mate

will be working through it in the morning


regards


TopiToo

[TopiToo]

Hello

regulator, is not doing its job again charging the battery at 17V

thanks for all the help folks


TopiToo

[phil_h]

Do not run the bike if your meter shows 17V !
You will end up damaging something else, as it sounds like the rectifier part that turns the ac into dc is not working, so the peak voltage will be even higher. Peak current will be proportional to peak voltage, so beware !
Also, if your regulator is faulty, you shouldnt run the bike with the battery disconnected for the same reason.
Set your meter to ac to check this. There should be no ac with a battery connected.
Putting 17V onto a battery could damage it and/or the wiring beyond repair.