Re: Re: Re: Re: Re: Re: Re: low mod 12v conversion

Posted by buickanddeere on February 26, 2004 at 04:35:37 from (64.10.41.69):

In Reply to: Re: Re: Re: Re: Re: Re: low mod 12v conversion posted by Bob M on February 25, 2004 at 19:05:20:

Something I remembered to mention 2 seconds after posting is that 12V on a 6V field that wasn't already burned wouldn't particularly stress it.
The strength of the magnetic field develped would also be doubled with the 12V instead of 6V. This would also increase the generator output voltage. This would reduce the duty cycle time and heating concerns.
The soft iron cores are pretty large and the field windings modest. The excitation wasn't being driven into saturation.
So if the 6V generator was running at more than just the break even rpm to make 14.4V and the field wasn't enegergized 100%. The smoke shouldn't have got out of the windings.
The person doing the origional 6V to 12V conversion wasn't a pro. There was a 6V system that wasn't working and they threw a 12V battery and regulator into the mix and have come up with the conclusion that the conversion ruined the generator. Sorry, it was already toast before the tinkering started.
Install a new field, a regulator that doesn't weld closed and enough rpm the field is energized only 30-70% of the time and it will be fine.

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