batteries in place of generator

[Jay Darst]

FYI

In my 85 PT40, is a Leece-NeVille 320amp alternator.

That is the biggest I could find in a 12volt alt.

Makes plenty of power to run an inverter powered A/C while running
down the road.

Incidentally, I have run 1 roof air with the inverter WITHOUT the
Detroit running. Run it while at a lunch stop or loading and
unloading.

I have 6 6volt trojan T105s. Thats 660 amp hour capacity of which you
can safely use about 50% when sucking on them with a big draw like
A/C. The roof airs start at about 19 amps and then operate at about
12.5 amps.

That means that 12.5 amps(@110V) x 110 = 1,375 watts
but then inverters typically are around 92% efficient so
1,375 divided by 93% = 1,478 watts so
1,475 divied by 12.5Volts = 118 amp draw at 12.5volts so
if the A/C runs at 100% duty cycle, you should be able to run the A/C
for 2.8 hours.

There are some other factors that will/could cause less run time, has
to do with a high amp draw with no break in the action. Prawlly
internal battery temps and other misc stuff.

You won't start the coach on that battery bank after 2.8 hours. Ya
might start it after an hour if temps are above 70 degrees, which
probably would be, since you're running A/C.

Ramble ramble ramble

2 cents... ;~}

Jay Darst
85PT40 with Xantrex 2,500 watt Inverter/Charger and 320amp alt
'91 Prevost Royale 40XL with a 24V 280amp alt using Vanner
electronics to step down to 12V
'00 Prevost Royale H345 with 2 alternators 1-12v140amp and 1-24v
monster oil cooled, etc
Springfield/Sullivan, IL


--- In WanderlodgeForum@yahoogroups.com, Wilhelmus Schreurs
wrote:
>
> Dorn:
> Let us know what alternator you might settle on. I am thinking of
upgrading as well, escpecially with the electric brake drawing the
current like it does.
>
> Bill 84 FC 35 SB "$quanderlodge"
> Terrace, B.C. Canada
>
>
> ----- Original Message ----
> From: Dorn Hetzel
> To: WanderlodgeForum@yahoogroups.com
> Sent: Tuesday, December 18, 2007 12:31:07 PM
> Subject: Re: [WanderlodgeForum] Re: batteries in place of generator
>
>
>
>
>
>
>
>
>
>
>
>
>
> Yep, my engine run A/C doesn't run right now, but it's
on my short list to
>
> repair, just putting it off until spring since I sure don't need AC
now
>
>
>
> I'm looking at something like a Xantrex RS3000 and about 300 amps of
>
> alternator capacity. That should run at least one of the AC units
while
>
> driving I would hope.
>
>
>
> Regards,
>
>
>
> Dorn Hetzel
>
> 77FC35
>
> Hogansville, GA
>
>
>
> On Dec 18, 2007 2:45 PM, Jon wrote:
>
>
>
> > --- In WanderlodgeForum@ yahoogroups. com 40yahoogroups. com>,
>
> > "Dorn Hetzel"
>
> > wrote:
>
> > >
>
> > > The gas generator on my 77FC35 isn't in the best shape. (hosed
up
>
> > flywheel,
>
> > > takes many tries to find enough teeth to make it start, then
>
> > doesn't run for
>
> > > more than 5 minutes without starving for fuel... (or so it
seems))
>
> > >
>
> > > I'm considering just pulling it out and filling the hole where
it
>
> > used to be
>
> > > with a big pile of batteries and a big inverter/charger.
>
> > >
>
> > > My thought is that the generators weight in batteries would be a
>
> > lot of Amp
>
> > > Hours.
>
> > >
>
> > > I would also probably put in the biggest alternator I could get
my
>
> > hands on
>
> > > for best charging and most useable power whilst on the road.
>
> > >
>
> > > I realize this arrangement probably won't run the much air
>
> > conditioning, or
>
> > > for long, but I don't have any immediate plans to boondock with
the
>
> > air
>
> > > running
>
> > >
>
> > > Any thoughts? Anyone tried this with success or failure?
>
> > >
>
> > > Regards,
>
> > >
>
> > > Dorn Hetzel
>
> > > 77FC35
>
> > > Hogansville, GA
>
> > >
>
> > >
>
> > > [Non-text portions of this message have been removed]
>
> >
>
> > Without saying to much I would stick with some type of generator.
If
>
> > your coach is typical for being a vintage Wanderlodge than your
>
> > Engine run A/C does not operate. Now I know most of the people
here
>
> > use there generator to run there topside A/C unit in hot weather
when
>
> > there dash air is not operational. These old coaches can get
pretty
>
> > hot inside during the summer months. I would stick to a generator
>
> > just for that reason. Jon
>
> > >
>
> >
>
> >
>
> >
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> <!--
>
> #ygrp-mkp{
> border:1px solid #d8d8d8;font-family:Arial;margin:14px
0px;padding:0px 14px;}
> #ygrp-mkp hr{
> border:1px solid #d8d8d8;}
> #ygrp-mkp #hd{
> color:#628c2a;font-size:85%;font-weight:bold;line-
height:122%;margin:10px 0px;}
> #ygrp-mkp #ads{
> margin-bottom:10px;}
> #ygrp-mkp .ad{
> padding:0 0;}
> #ygrp-mkp .ad a{
> color:#0000ff;text-decoration:none;}
> -->
>
>
>
> <!--
>
> #ygrp-sponsor #ygrp-lc{
> font-family:Arial;}
> #ygrp-sponsor #ygrp-lc #hd{
> margin:10px 0px;font-weight:bold;font-size:78%;line-height:122%;}
> #ygrp-sponsor #ygrp-lc .ad{
> margin-bottom:10px;padding:0 0;}
> -->
>
>
>
> <!--
>
> #ygrp-mlmsg {font-size:13px;font-family:arial, helvetica, clean,
sans-serif;}
> #ygrp-mlmsg table {font-size:inherit;font:100%;}
> #ygrp-mlmsg select, input, textarea {font:99% arial, helvetica,
clean, sans-serif;}
> #ygrp-mlmsg pre, code {font:115% monospace;}
> #ygrp-mlmsg * {line-height:1.22em;}
> #ygrp-text{
> font-family:Georgia;
> }
> #ygrp-text p{
> margin:0 0 1em 0;}
> #ygrp-tpmsgs{
> font-family:Arial;
> clear:both;}
> #ygrp-vitnav{
> padding-top:10px;font-family:Verdana;font-size:77%;margin:0;}
> #ygrp-vitnav a{
> padding:0 1px;}
> #ygrp-actbar{
> clear:both;margin:25px 0;white-space:nowrap;color:#666;text-
align:right;}
> #ygrp-actbar .left{
> float:left;white-space:nowrap;}
> .bld{font-weight:bold;}
> #ygrp-grft{
> font-family:Verdana;font-size:77%;padding:15px 0;}
> #ygrp-ft{
> font-family:verdana;font-size:77%;border-top:1px solid #666;
> padding:5px 0;
> }
> #ygrp-mlmsg #logo{
> padding-bottom:10px;}
>
> #ygrp-vital{
> background-color:#e0ecee;margin-bottom:20px;padding:2px 0 8px 8px;}
> #ygrp-vital #vithd{
> font-size:77%;font-family:Verdana;font-weight:bold;color:#333;text-
transform:uppercase;}
> #ygrp-vital ul{
> padding:0;margin:2px 0;}
> #ygrp-vital ul li{
> list-style-type:none;clear:both;border:1px solid #e0ecee;
> }
> #ygrp-vital ul li .ct{
> font-weight:bold;color:#ff7900;float:right;width:2em;text-
align:right;padding-right:.5em;}
> #ygrp-vital ul li .cat{
> font-weight:bold;}
> #ygrp-vital a{
> text-decoration:none;}
>
> #ygrp-vital a:hover{
> text-decoration:underline;}
>
> #ygrp-sponsor #hd{
> color:#999;font-size:77%;}
> #ygrp-sponsor #ov{
> padding:6px 13px;background-color:#e0ecee;margin-bottom:20px;}
> #ygrp-sponsor #ov ul{
> padding:0 0 0 8px;margin:0;}
> #ygrp-sponsor #ov li{
> list-style-type:square;padding:6px 0;font-size:77%;}
> #ygrp-sponsor #ov li a{
> text-decoration:none;font-size:130%;}
> #ygrp-sponsor #nc{
> background-color:#eee;margin-bottom:20px;padding:0 8px;}
> #ygrp-sponsor .ad{
> padding:8px 0;}
> #ygrp-sponsor .ad #hd1{
> font-family:Arial;font-weight:bold;color:#628c2a;font-
size:100%;line-height:122%;}
> #ygrp-sponsor .ad a{
> text-decoration:none;}
> #ygrp-sponsor .ad a:hover{
> text-decoration:underline;}
> #ygrp-sponsor .ad p{
> margin:0;}
> o{font-size:0;}
> .MsoNormal{
> margin:0 0 0 0;}
> #ygrp-text tt{
> font-size:120%;}
> blockquote{margin:0 0 0 4px;}
> .replbq{margin:4;}
> -->
>
>
>
>
>
>
>
>
> Be smarter than spam. See how smart SpamGuard is at giving
junk email the boot with the All-new Yahoo! Mail. Click on Options
in Mail and switch to New Mail today or register for free at
http://mail.yahoo.ca
>
> [Non-text portions of this message have been removed]
>