Vince Pitelka on fri 24 sep 04
> Does anyone know how long a car 12 volt battery will hold a charge
> running
> a 1 hp pottery wheel off it when you have no other power source? Also how
> long and how often would the battery need recharging to use again?
My guess is that a car battery would run a 1 hp. pottery wheel for about
five minutes. It simply would not be worth it at all. Deep-cycle marine
batteries, such are used in expensive solar power systems, would do the
trick but are talking major investment and major recharging system. As
someone else suggested, why not use a kick wheel or a treadle wheel? If
there is some reason why you absolutely need to use an electric wheel, get a
lower power one and run it off a generator when you need to, or else invest
in the deep-cycle batteries.
Good luck -
- Vince
Vince Pitelka
Appalachian Center for Craft, Tennessee Technological University
Smithville TN 37166, 615/597-6801 x111
vpitelka@dtccom.net, wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
Milla Miller on fri 24 sep 04
Does anyone know how long a car 12 volt battery will hold a charge running
a 1 hsp pottery wheel off it when you have no other power source ? Also how
long and how often would the battery need recharging to use again? T he
converter are the ones Radio shack[$100] has that clip to a 12 volt battery with
clips like a charger has to start a dead battery.The converter has 2 recepticles
and I wonder if a 100 watt light also running simultaneously would shorten
the run time a lot as well ? Are these useful to use off a battery if a
hurricane took out power or would the charge be for too brief a time to run a
regular refrigerator or tv or computer, anyone really kn ow from science or
experience? Generators are unavailable now.
Margaret in SC .
Mike Gordon on fri 24 sep 04
Margaret,
It seems to me your money would be better spent buying a gas driven
generator, they're fairly cheap these days and put out a fair amount of
juice, Mike Gordon
On Sep 24, 2004, at 6:20 AM, Milla Miller wrote:
> Does anyone know how long a car 12 volt battery will hold a charge
> running
> a 1 hsp pottery wheel off it when you have no other power source ?
> Also how
> long and how often would the battery need recharging to use again? T he
> converter are the ones Radio shack[$100] has that clip to a 12 volt
> battery with
> clips like a charger has to start a dead battery.The converter has 2
> recepticles
> and I wonder if a 100 watt light also running simultaneously would
> shorten
> the run time a lot as well ? Are these useful to use off a battery if
> a
> hurricane took out power or would the charge be for too brief a time
> to run a
> regular refrigerator or tv or computer, anyone really kn ow from
> science or
> experience? Generators are unavailable now.
> Margaret in SC .
>
> _______________________________________________________________________
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>
Kenneth D. Westfall on fri 24 sep 04
Don't know the answer to you wheel question but you defiantly would be
better off using a compact florescent instead of the 100 watt
incandescent. We have friends that run there hole house hold off batteries
and a inverter but they use 16 6volt golf cart battery connected
together. It last them about four to five days frugally using lights,
radio, computer, TV, VCR and a few kitchen tools. Things like
refrigerates, washers, and driers are not practical because they take a
very larger inverter and batteries. You would be better off with a gas
refrigerator and freezer. You may be able to find a more definite answer
by searching on http://www.homepower.com/
Kenneth D. Westfall
Pine Hill Pottery
R.D. #2 Box 6AA
Harrisville, WV 26362
kenneth@pinehillpottery.com
http://www.pinehillpottery.com
pdp1@EARTHLINK.NET on fri 24 sep 04
Hi Margaret,
Probably a Kick wheel would be less troubles...!
I am not clear on some of this, but, I would guess...so far
as how long a Car Battery would last running an average
Potter's
Wheel...I would say, "not
long"...leaving aside the voltage of the Battery verses what
the Wheel is intended to run on as for D.C.
If you had a bank of such Batteries, then longer,
certainly...
Car Batteries come in different capacities, which tend also
to occur as different physical sizes, so that too is a
factor. As
well as that they may be had in 6, 8, 12 and 24 Volt if not
other voltages as well.
Larger versions of such 6 volt Batteries intended for
Golf-Carts,
or 12 volt ones intended for large Trucks or the like, being
among the largest of common sorts, would
have much greater capacities
than those intended to energize a little Electric Starter of
a little Car's Engine.
Any method by which a compatible Automotive Alternater or
Generator can
be turned to the necessary rpm ( such as one would find in
vehicles with a charging system) would serve to recharge
such Batteries, and the rate of re-charge would be a
function of the
output-capacity of the Alternator or Generator, it's rpm,
and how
much charging there is to do, and, with what the capacities
of
the Batteries are that need to be charged...
Running Water, Wind, Animals, People, tides, waves, or a
small Engine of
some kind, may, with suitable mechanical means, be arranged
to turn such a Generator or Alternator to keep the
Batteries charged or to re-charge them.
Also, as you mention, a conventional Battery charger (or
Transformer,) as runs
off 60 cycle 110 may be used to re-charge such Batteries,
and
usually this will be much
slower than the results of a compatible Automobile Generator
or Alternator turning at some optimum rpm.
One way or another, the energy you can get out of storage
Batteries will be some ways less than the energy needed to
charge them or re-charge them, so, optimumly,
the means should be something easy...
A Kick Wheel, and any number of self-generator, wind-up,
spring-driven light units, would be pretty elegant....you
just wind them up and they give you light for however long,
and then you wind them up some more, and so on. Radios are
also made this way, as allow you to have and enjoy them if
there is no
power otherwise...
Phil
el ve
----- Original Message -----
From: "Milla Miller"
> Does anyone know how long a car 12 volt battery will
hold a charge running
> a 1 hsp pottery wheel off it when you have no other power
source ? Also how
> long and how often would the battery need recharging to
use again? T he
> converter are the ones Radio shack[$100] has that clip to
a 12 volt battery with
> clips like a charger has to start a dead battery.The
converter has 2 recepticles
> and I wonder if a 100 watt light also running
simultaneously would shorten
> the run time a lot as well ? Are these useful to use off
a battery if a
> hurricane took out power or would the charge be for too
brief a time to run a
> regular refrigerator or tv or computer, anyone really kn
ow from science or
> experience? Generators are unavailable now.
> Margaret in SC .
>
>
____________________________________________________________
__________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your
subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached
at melpots@pclink.com.
Michael Wendt on sat 25 sep 04
Two things to consider:
1) the wattage of the converter. I got a 1500 watt
converter at Costco recently for $84. 746 watts
are needed for one horsepower.
2) amp hour capacity of the battery, and if it
is a "deep cycle" battery.
Regular car batteries don't last long in deep cycle
applications like trolling motors or RV lighting
use. The rule is: amps x volts = watts.
Thus, a 64 amp hour 12 volt battery will yield
768 watt for one hour. Except when you center,
your wheel uses way less power than that so
a fully charged 64 amp hour battery could last as
long as 2-4 hours of light use. Less if you do a
lot of heavy pulls and centering.
It is a quiet and good solution for a fair setting
where a power is not available and a generator
would be too noisy. Have a second battery handy
to install when the first goes dead.
Also, if you need light, a fluorescent would pull
23 watts per hour if it is equal to a 100 watt
incandescent light bulb.
Regards,
Michael Wendt
Wendt Pottery
2729 Clearwater Ave
Lewiston, Idaho 83501
USA
wendtpot@lewiston.com
www.wendtpottery.com
pdp1@EARTHLINK.NET on sat 25 sep 04
Really too...
You could just have your Car with the battery in it,
mount a rim on the rear with no Tire on it but with some
good wraps of
Duct Tape or the like on the inner-rim part, or, just bolt a
suitable pulley to the outside of the rim-and-Tire, and have
that side of the Car jacked
up so the Tire is off the ground a little, and run a longish
belt in a lazy
twist, from that to one's Potter's Wheel,
and just let the Car idle in whatever gear and have all the
torque
you'd want for those pasky centering tasks of large Clay
amounts...that and run a few wires from the Car's
electrics to run a little light or two...and...
You know, like an old time Farm-thing...
In fact, a Model T Ford (roughly 35 Horse, real 'Horse' too)
would be ideal, even if the electrics were
hi-tension Magnito...just stick with the 'Ford' approved
bulbs...for the 'lighting' part-of-things...or in respites
from boredom, make little bets about who can pee hi-enough
to hit one of the Spark Plugs...
If I end up in a rural setting, I'd be looking for one right
fast...go places a candy-assed 'hummer' or a 'range-rover'
can not go, and, get you home again too...and if you need to
change a Tire, if you had your Wheaties that morning, you
can just grab it, lift it up and shove a block under the
axel with your foot...and change out your Tire
nice-as-pie...
Golly...
Phil
el ve
David Hendley on sun 26 sep 04
I know this is not what the original questioner wanted to know, but
you can run a potters wheel off a car battery WITHOUT a
converter.
The potters wheel, after all, is a DC motor. Just bypass the controller
and footpedal, and you will have a single speed wheel. Wire in a
switch if you want an on-off option. A potters wheel wired directly
to 12 volts will go "medium-slow" - Slow, but fast enough to center
if you are skilled, and OK for throwing averaged sized pots. A
regular car battery will power the wheel for many hours.
I know this because, several years ago, the footpedal on my
Pacifica quit. I had a load of pots that had to trimmed before a new
footpedal could be shipped to Maydelle.
The direct-to-the-car-battery setup saved the pots.
David Hendley
david@farmpots.com
http://www.farmpots.com
Kenneth D. Westfall on mon 27 sep 04
David is right you can run your wheel off a battery but the only problem is
many wheels use a 90 Volt DC motor not 12 Volts which means your not going
to get much speed or torque out of 12 to 13 volts a car battery can
deliver. You can put several batteries in series to up the volts but then
your adding $ and weight.
Kenneth D. Westfall
Pine Hill Pottery
R.D. #2 Box 6AA
Harrisville, WV 26362
kenneth@pinehillpottery.com
http://www.pinehillpottery.com
Karen Stokes on wed 29 sep 04
My neighbor up the road from me is totally off-grid, and has a beautiful
little pottery studio. She has an electric wheel, which runs off of the
inverter, and her electricity is furnished by a number of 80 watt solar
panels. She has 2 computers, a VCR, TV, satellite dish, CD player, etc, and
even has a fridge that runs off of solar power. Their water is pumped into a
10,000 gal tank, and the motor (?) is run by two 80 watt solar panels. You
can run off of car batteries, but they don't last long, you gotta have a
bunch of them, and you have to have some way of recharging them. Those of us
who use solar power use the deep cycle batteries, and they last a lot longer
than car batteries.
Hope this helps some.
Karen Stokes
3 Feathers Ranch
Snowflake, Arizona
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