Posted by John T on August 25, 2008 at 12:58:55 from (66.244.97.31):
In Reply to: H charging prob;lem posted by PetePequawketfarm on August 25, 2008 at 10:42:53:
Like Jim, Im NO FAN of the 8 volt system as a band aid approach to fix a problem which a good heavy duty battery and 00 Gauge cables might cure, especially on an lil H although Id cut a guy a lil more slack if it were an M lol
As far as charging an 8 volt battery with a 6 volt genny, heres my thinkin and I hope Bob M n Jim will confirm or shoot this down......
A genny dont necessarily know its voltage, thats a function (in great part within limits) of how fast it turns plus how much current is pumped through the field windings. So....
1) If its a cutout relay I think it will still charge an 8 volt battery NO MODS NECESSARY (notwithstanding cut in/out voltage adjustment) although maybe not at any super high charge rate.
2) If it has a VR that has 2 coils and one (not the cutout relay) is a current controller ONLY, I think it will still charge with no mods (other them perhaps cut in/out voltage) cuz the current control relay can still do its job.
3) HOWEVER if its a 3 coil or 2 coil relay and the one relay is a VOLTAGE CONTROL RELAY (or a combination current n voltage relay on that second coil) I think it needs some significant adjustments (air gaps or spring tensions) to charge an 8 volt battery.
PS follow Jims advice about Polarity and be sure n polarize the genny and have a VR thats compatible with your ground polarity
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