Guys,<div><br></div><div>I'm going to answer William's questions off list unless anybody else is interested in the conversation. If you want any additional info, I am glad to answer questions, I just don't want to spam the list with this stuff.</div>
<div><br></div><div>/Aaron</div><div><br><div class="gmail_quote">On Tue, Feb 10, 2009 at 10:24 AM, Brian Lasseter <span dir="ltr"><<a href="mailto:blasseter.cmpe01@gtalumni.org">blasseter.cmpe01@gtalumni.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="Ih2E3d">On Tue, Feb 10, 2009 at 7:55 AM, William Gooch <<a href="mailto:goochb@alum.mit.edu">goochb@alum.mit.edu</a>> wrote:<br>
> There's also the option of using the secondary shaft on my traction motor to<br>
> drive the AC compressor using a belt and pulleys, much as the ICE motor<br>
> did. I realize this has some drawbacks, but it would be cheaper and perhaps<br>
> less trouble than adding a separate new compressor setup. I wonder whether<br>
> it might also draw less power from the battery pack. What experience do<br>
> folks have with this? Thanks.<br>
<br>
<br>
</div>The laws of physics are quite clear on this point... you will draw<br>
more power from the battery pack if you try to run the A/C off of a<br>
secondary shaft from the traction motor due to mechanical and friction<br>
losses. It is most efficient for the A/C to have it's own motor<br>
running at that motor's most efficient speed. (This is why some<br>
newer luxury sedans are moving to all electric air conditioning too...<br>
it allows them to eek out a few more MPG for the gov't ratings.)<br>
<br>
(Besides... it very fun to be able to turn on cold A/C in a parked car.)<br>
<div class="Ih2E3d"><br>
<br>
TTFN,<br>
Brian "Lasso" Lasseter<br>
<br>
"No Sane man will dance." -Cicero (106-43 B.C.)<br>
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</blockquote></div><br></div>