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Question about RV solar battery charging with vehicle's alternator - Page 2

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Posted by wmbjkREMOVE on May 12, 2010, 1:49 pm

To the OP:  This article
http://homepower.com/files/webextras/mark8.pdf  provides some good
background info on vehicle alternators and deep cycle batteries. Note
that they don't recommend using the built-in regulator.  

My advice to anyone considering your advice is to read a little of
your past wisdumb. Lots of examples of it here
http://www.citlink.net/~wmbjk/tbfduwisdumb.htm . The section on field
control of alternators is relevant to the case at hand, since someone
asking about using a small alternator to charge a large battery bank
might want to discard comments from a nitwit who doesn't know ohms
from oatmeal.

Previous ghinius quotes:

On the front of this rhostat it is clearly marked "150 Amps". Its
resistance is too low

The item in question is a 150 ohm rheostat .

Rheo - 8.5 ohm ceramic

It also rated 150 Ohms. but the 200 Amp rating is intresting

Rheostat 150 Amp 150 Ohms. I did not make this rheostat, nor did I
rate it.



Posted by ghio on May 14, 2010, 2:07 pm
On May 12, 11:49pm, wmbjkREM...@citlink.net wrote:

Oh wayne you're such a simple minded child thinking that calling me
names is going to cover up your self proclaimed cockups.

Posted by wmbjkREMOVE on May 14, 2010, 2:17 pm

articlehttp://homepower.com/files/webextras/mark8.pdfprovides  some good

herehttp://www.citlink.net/~wmbjk/tbfduwisdumb.htm . The section on field

lowhttp://groups.google.com/group/alt.solar.photovoltaic/msg/280d1994dfd ...


ceramichttp://groups.google.com/group/alt.energy.homepower/msg/b86dd954d030e ...

intrestinghttp://groups.google.com/group/alt.solar.photovoltaic/msg/a7d5706b7b4 ...

It's undeniable that you aren't qualified to be giving advice on
alternator charging, or much else for that matter. Why you keep
pretending is a mystery. Feel free to take another crack at explaining
your field-control wisdumb if you like. But it's a bit difficult to
rationalize that level of confusion so I expect that all we'll see is
more of your outrageous storytelling instead.


Posted by ghio on May 14, 2010, 10:44 pm
 On May 15, 12:17am, wmbjkREM...@citlink.net wrote:

wayne and George both use an alt on a small engine as a battery
charger. The difference is;

wayne's own description of his charger:

I don't have any experience with your type of
setup, but I have something a bit similar - a backup charger using an
automotive alternator outputting 2000W and belt-driven by a small
engine. The stock diodes failed twice before I gave up on them and
built a beefier external rectifier with a fan-cooled heat sink. The
other problems were overheated stator terminals (failed at the crimps)
and relatively short belt life. My advice would be to check the
alternator output at various times when charging the large bank, and
if the amps are high then be on the lookout for the weak links


No overheating.
No failed diodes.
No failed crimps.
No short belt life.

You see it doesn't matter what wayne thinks of my field control
method. The point is that wayne made a complete cockup of a job that I
and many others managed to do properly. wayne simply applied the same
care and attention to the job of building a backup charger as he used
to build his system. That is, none at all.

Despite wayne's glorious claims in these groups, he has never designed
a system in his life, he did not build his house, and he has now
bragged about his failed backup charger as if it was some personal
triumph of excellence.

Sad really.

Posted by wmbjkREMOVE on May 14, 2010, 11:32 pm

providessome good

http://www.citlink.net/~wmbjk/tbfduwisdumb.htm . The section on field

lowhttp://groups.google.com/group/alt.solar.photovoltaic/msg/280d1994dfd ...


ceramichttp://groups.google.com/group/alt.energy.homepower/msg/b86dd954d030e ...

intrestinghttp://groups.google.com/group/alt.solar.photovoltaic/msg/a7d5706b7b4 ...



... left out the fact that his is 35A at 12V = 420W.

And no mention of the difference between running a simple alternator
with some impossible-to-describe field control that must be plugged in
for each use and which requires "further control' to be used
http://groups.google.com/group/alt.solar.photovoltaic/msg/280d1994dfda27b7 ,
and one producing 5 times as much and nearly double its original
rating, with electronic control and automatic warm-up and cool-down

True, but anybody seeking alternator advice will realize that if after
7 years you still can't reconcile a single word of all the
contradictory foolishness you've posted about simple field control,
then your comments on the topic at hand are just more of the same. Can
you do it yet, or do you need another 7 years to decide if it's
8/150/300K ohms-150/150A? Will you ever contribute anything useful to
this newsgroup? No and no.


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