[Ducati] Eleck-trix

[Mark Pollard]

Hi,
    The first thing you need to do is to check the accuracy of the 
installed voltmeter.
Analog voltmeters bought at most parts stores are notoriously 
inaccurate. Also check to
see where the positive lead is connected. It should be connected to the 
main feed wire to
the fuse panel. It's probably a brown wire from the main relay depending 
on the year of your 900.
Check the accuracy of the voltmeter with a good digital meter. Then 
check the voltage at the battery.
   There  should  be around  14.2v at  the battery  terminals  with the  
engine at  3000 rpm.
Given the position of the battery in relationship to engine heat it 
could be somewhat less and still
keep the battery charged. Maybe 13.4v on the low side to 14.8v on the 
high side although these
values change due to many other conditions.

Mark
     

Kevin Krekler wrote:
> Hello,
>  I've got a 900ss from my father (he passed away in sept. last year) the
> engine was rebuilt 300mi. ago(by Dad) and he also installed a volt gauge.
> The gauge reads around 10.v at idle and 12. when cruising when i asked him
> about this (prior to his death) he told me everything tests good. and you
> dont spend that much time at idle. any hints or tips to solve this problem?
> I dont know  a lot about it's rebuild other than a the heads were sent off
> for porting it has 12.5:1 compression and with that compression you dont
> have a lot of crank's from the battery.
>  Thank's in advance.
> Kevin
>
>
> On 8/7/07, Tom <st2_ at ticino.com> wrote:
>   
>>> Right,regulators/rectifiers go bad most of the time because of the
>>>       
>> stators
>>     
>>> reversing polarity or going to ground.
>>>       
>> They are supposed to reverse polarity, as they are AC.  And the stator
>> shorting will NOT hurt the regulator! (at least not those used by Ducati
>> and
>> Guzzi)
>>
>> Tom
>>
>>
>>
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>
> Our newest sponsor, MC Stands, has just opened its doors!  It's a motorcycle
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> shipment. Whether front stands, rear stands, paddock stands, dirt bike
> stands, or any kind of stand or lift, MC Stands tests, rates, and discounts
> everything they sell.  Check them out!
>
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