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<DIV dir=ltr align=left><SPAN class=958020505-10052009><FONT face=Arial
color=#0000ff size=2>Excellent! David after I saw your post I realized
this might work, so there are two different ways to sleep that night in a warm
bed instead of a cold truck. Your idea is one: remove the alternator belt
and rig the drill to spin the alternator. Here's what I
thought:</FONT></SPAN></DIV>
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<DIV dir=ltr align=left><SPAN class=270165022-09052009><FONT face=Arial
color=#0000ff size=2>Recall that hand drills are variable speed devices,
using a potentiometer in the trigger. In my misspent youth,
I found an old drill in the trash, plugged it in, didn't work, took it
apart and noticed that it was a DC motor. It had a rectifier circuit going
to the potentiometer in the trigger and that output going to brushes
in the motor. So I reasoned I should be able to run the drill
motor off of a car batter by taking out the rectifier and putting
in 12 volts just upstream of the trigger potentiometer. Works
great. So store this away: if you are away out in the hootnannies with no
electric power but have the usual tools one carries in a take-along tool
bag, and you need to drill a hole in something, remember you can splice in ahead
of the trigger and run your hand drill off your car battery.</FONT></SPAN></DIV>
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<DIV dir=ltr align=left><SPAN class=270165022-09052009><FONT face=Arial><FONT
color=#0000ff><FONT size=2>So I reasoned that if a drill can run off of a
battery, then a battery can run off of a drill. So I would remove the
drill motor brushes, attach the jumper cables to the car battery, take
about a 10 amp fuse from something non-critical, put it in series, then
gradually pull the trigger until the fuse burns out, lock the trigger in
place right there, then connect it back without the fuse and let the rectifier
circuit in the drill charge the battery. With ten amps, the truck should
start within an hour or two<SPAN
class=958020505-10052009>.</SPAN></FONT></FONT></FONT></SPAN></DIV>
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color=#0000ff><FONT size=2><SPAN
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<DIV dir=ltr align=left><SPAN class=270165022-09052009><FONT face=Arial><FONT
color=#0000ff><FONT size=2><SPAN
class=958020505-10052009>spike</SPAN></FONT></FONT></FONT></SPAN></DIV></SPAN></DIV>
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<FONT face=Tahoma size=2><B>From:</B> extropy-chat-bounces@lists.extropy.org
[mailto:extropy-chat-bounces@lists.extropy.org] <B>On Behalf Of </B>David C.
Harris<BR><B>Sent:</B> Saturday, May 09, 2009 6:06 PM<BR><B>To:</B> ExI chat
list<BR><B>Subject:</B> Re: [ExI] puzzler<BR></FONT><BR></DIV>
<DIV></DIV>You know how to challenge us! <BR><BR>OK, some generators
have a 12 volt DC output that could be carried to the battery directly.
I have such a generator in my back yard storage, thanks to Enron's fraud that
made me think that shortages of 110 juice would be a frequent occurrence in
California.<BR><BR>But assuming this generator was not so equipped, I'd take
the generator's 110 AC thru the extension cord to the electric drill with a
big drill and some little ones jammed into the square drive side of a socket
so the drill's rotation would drive the nut that holds the pulley that is
bolted to the CAR's generator or alternator. Loosen the generator or
alternator drive belt so you're just turning the pulley that makes 12V
for the car battery. Disconnect the battery positive, temporarily, from
devices that might deplete the stream of entering 12V power.<BR><BR>There is
some remote chance that the carboxylic acid(s) in the olive oil would orient
(because carboxylic acids have a positive end and a hydrophobic oily chain) in
contact with the battery acid and act as some sort of diode, allowing more
electrons to move in one direction than the other direction of the 110
alternating current. Different numbers of electrons makes a DC current
in one direction. I'd do the drill method before Googling on the
electrical properties of olive oil and acids.<BR><BR>How'd I do?<BR><BR>
- David Harris, Palo Alto<BR><BR><BR>spike wrote:
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<DIV dir=ltr align=left><SPAN class=442425620-09052009><FONT face=Arial
color=#0000ff size=2>.... I suspect even <SPAN
class=692240521-09052009>the</SPAN> monster brains on this forum will not
get it. Here it is:</FONT></SPAN></DIV>
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<DIV dir=ltr align=left><SPAN class=442425620-09052009></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=442425620-09052009><FONT face=Arial
size=2>"... brought along my generator, radio, etc. I also packed an
extension cord, my electric drill and the bits, and my socket and wrench
set. ... jumper cables, a roll of duct tape and a quart of Fillipo Berio
Extra Virgin Olive Oil....<BR><BR>"If only there was a way to get power from
the generator which is making 110 volts AC and get that into my dead
battery, which is 12 volts DC. The question is: how can I do it with only
the items at my disposal?"</FONT></SPAN></DIV>
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<DIV dir=ltr align=left><SPAN class=442425620-09052009></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=442425620-09052009><FONT
face=Arial><FONT color=#0000ff><FONT size=2>I nailed it because of something
I discovered during my misspent youth. The answer will be given on the
Car Talk show tomorrow. I will post the answer later
today. <SPAN class=692240521-09052009>Any
guesses?</SPAN></FONT></FONT></FONT></SPAN></DIV>
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