[Public-List] Charging system

[Winslow Ayer]

Also, why would it be fine between 900-1200 and then be erratic at higher rpms?

Winslow

> On Aug 26, 2021, at 4:32 PM, Andrew Johns <johnsab9 at gmail.com> wrote:
> 
> 
> Check your connections including your grounds.   An open on the charging circuit while running will kill the diodes. 
> 
> 
> Where do you keep your boat on Champlain?  We kept ours at the Moorings for years before we took off cruising.
> 
>> On Thu, Aug 26, 2021 at 1:44 PM Winslow Ayer via Public-List <public-list at lists.alberg30.org> wrote:
>> So, earlier this summer I had an issue with my charging system. The meter needle jumped around at higher rpms. Was working fine when we put in and seemed okay then my batteries died. I checked the charging at the alternator and it was only putting out 11 volts. Talked to a couple friends who knew a lot about electrical systems and they thought voltage regulator. I found one online, ordered it and installed it. No difference. Bad diode? I thought I would get a new 55 amp (since they don’t have 35 amp anymore) and have the other rebuilt over the winter then I’d have a spare. So anyway, I got a new one from Moyer and installed it. Voila, output 30 amps and 14.2 volts. Sweet. Problem solved. I thought. Yesterday while motoring up to go through the causeway to Malletts Bay my volt meter started jumping around. Fine from 900-1200 rpms but above that the needle jumped around like crazy. It did that before the other one went bad, so I’m hoping someone can help me figure this out before I blow the alternator.
>> 
>> Winslow
>> Tinkers Damn #283
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