[AT] Charging batteries

[Brian VanDragt]

I thought I read somewhere that generators have an optimum speed where they charge the most, and going faster than that doesn't help, it actually decreases output.  The strange part was that the optimum speed is actually slower than a tractor's full engine speed, so the generator charges the best at less than full engine speed.  Maybe I'll think of where I saw that.

Brian

> On March 12, 2019 at 2:22 PM Dean VP <deanvp at att.net> wrote:
> 
>      
>     Has anyone simply changed the diameter of the generator belt pulley to increase RPM's of the generator?  If so did it help? 
> 
>     On Tuesday, March 12, 2019, 8:00:18 AM MST, Ralph Goff <alfg at sasktel.net> wrote:
> 
> 
>     On 3/12/2019 7:56 AM, Ron Cook wrote:
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>     I have never been around an Allis Chalmers or Ford 6-volt tractor that the electrical system performed correctly.  International Harvester and John Deere are the only other brands I have any experience with.  I currently have both of those I use and have no problems at all.  I do not have an IH M, but I remember they were marginal on cranking.  6 volt obviously not enough.  Same with John Deere A.  12-volt fixes both of them.  6 volt simply was marginal to begin with.  As far as charging,  I am of the opinion it has to do with the generator's rpm and in the case of the Ford, a cheap low output generator.  10 amp generator would take all day at full speed to charge the battery back up and I doubt anything other than brand new would put out anywhere close to 10.  Doing chores and such just won't do it.
> 
>     I still run the Cockshutt 40 on 6 volts although I've got a bigger than original battery on it. My brother fixed the starter problem years ago by switching the body of another starter from a
> 
>     Massey combine onto the Cockshutt. It really improved the cranking speed. If everything is working right they don't need a lot of cranking to start anyway. You've likely seen the videos
> 
>     of starting my 40 on some pretty severe cold days on 6 volts.  I've seen a guy start a FArmall M , about two turns of the starter and it was running. I was amazed.
> 
>     On the other hand I've got a Case DC4 that is impossible to start on 6 volts. Or even 12.
> 
>     Ralph in Sask.
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