Misc: Charging Systems Intermittent charging?

[Bobv07662]

My 50 Rapide is having an intermittent issue with a newly rebuilt Miller D6 with a PODtronics regulator. It's a dry cell, 6 volt negative ground system that does not charge on occasion. All wiring is up to snuff but for the life of me I can't pin down any repeatable reason for it not to charge. When it charges it works as expected but about once in 5 starts, no charge. I went over it today, as it did not charge when I first started it, second time, no charge. Third time...all was well and continued throughout the day. Has anyone experienced something like this before? Thanks for any insight.

 

[brian gains]

this may not be the same issue but; i have an Alton and can't remember who's regulator.
on occasion while riding the amp meter indicates 0 charge or dissipation. at first i thought it was a fault / disconnected wire etc.
checking the battery it was always charged, tested the regulator as per instructions and no other wiring issues.
i therefore thought this was just the regulator creating a short circuit to ground when the battery was fully charged , disconnecting the load from supply.
I should qualify all the above by saying I know sweet FA about electrics.

 

[delboy]

"Newly rebuilt" dynamo, rings bells with me.
Sticking brushes? Skimmed armature? Iffy connection? Could be allsorts.
'Fraid you'll have to carefully check one thing at a time to find out.
Good luck and happy hunting.
Delboy.