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Old 08-04-2006, 12:58 PM   #61
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Ah, you use one peltier to cool the other even more? Gotcha.. That would work well to keep the bottom one icy..

I currently have an AMD cpu heatsink that I've fitted a 7200RPM fan onto.. has a copper circle in the center, does really well.
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Old 08-04-2006, 01:02 PM   #62
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Quote:
Originally Posted by Jam-ehz
Ah, you use one peltier to cool the other even more? Gotcha.. That would work well to keep the bottom one icy..
yep. make sure you wire them together in series, positive to negative.
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Old 08-04-2006, 01:11 PM   #63
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crappy wiring diagram. should be understandable though.
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Old 08-04-2006, 01:20 PM   #64
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Also, this might seem obvious, but make sure you stack the peltiers correctly: hot side up/facing the heatsink. Test them for a second or two to make sure of the orientation.
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Old 08-04-2006, 01:24 PM   #65
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Originally Posted by XrayFK
Also, this might seem obvious, but make sure you stack the peltiers correctly: hot side up/facing the heatsink. Test them for a second or two to make sure of the orientation.
Dont test them without the heatsink!!!!! It only takes a couple of seconds to blow your peltiers if you get them too hot. Believe me, they get hot fast!
Look at my wiring diagram of how they should be connected. Red/Red and black/black glues together.
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Old 08-04-2006, 01:26 PM   #66
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Dont test them without the heatsink!!!!! It only takes a couple of seconds to blow your peltiers if you get them too hot. Believe me, they get hot fast!
Look at my wiring diagram of how they should be connected. Red/Red and black/black glues together.
I test mine by just touching the wires for a split second.
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Old 08-04-2006, 01:58 PM   #67
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I'll have to try that..

Two items I use ALL the time are the handy-dandy 10-bulb discharger, and cutoff relays.. I have one for 6 cells (use a pot to adjust cutoff around 5.4V), and one for 4 cells (wired for 3.6V).. they work like a charm.. The relays can look confusing on paper, but they're really great..

I also make car stands out of old hard drives.. tear out the drive unit intact with the platters, bolt the motor side down on a plate with rubber feet as a base, and put rubber feet or foam around the top platter for your car, and you have an ultra-smooth rotating stand.. If you're lucky, you can keep the unit attached to the hard drive base, but some models don't expose the top platter enough..
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Old 08-04-2006, 06:18 PM   #68
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Hey guys, would these peltier's work.
http://www.oatleyelectronics.com/peltier.html
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Old 08-04-2006, 06:26 PM   #69
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Quote:
Originally Posted by Drewdc90
Hey guys, would these peltier's work.
http://www.oatleyelectronics.com/peltier.html
yep
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Old 08-04-2006, 06:33 PM   #70
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Cool, I have actually got one of these already. I'll have to get another one and some thermal epoxy. Where did you get the copper for the motor mount?
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Old 08-04-2006, 06:47 PM   #71
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Quote:
Originally Posted by Drewdc90
Cool, I have actually got one of these already. I'll have to get another one and some thermal epoxy. Where did you get the copper for the motor mount?
Home depot or Lowe's. 1 1/4" coupling. Perfect when you split it down the middle.
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Old 08-04-2006, 09:49 PM   #72
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ne1 know wer to get lipo or li ion cells?.....and can u build ur own packs out of them?

wat about nokia cell fone batteries?...theyre li ion and 3.6v each....will 2 or 3 of those work for a pack?
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Old 08-04-2006, 10:32 PM   #73
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About glueing the copper plate to the peltier device, what would happen if I did not used thermal bonding. Instead I use normal super glue and I only glue the plate at the corner end of the copper plate.

That would leave the center part of the copper and peltier device clear of glue and so on.

Would that work???
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Old 08-04-2006, 10:34 PM   #74
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Using thermal epoxy would probably work better.
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Old 08-04-2006, 10:35 PM   #75
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Quote:
Originally Posted by Tpg racer
About glueing the copper plate to the peltier device, what would happen if I did not used thermal bonding. Instead I use normal super glue and I only glue the plate at the corner end of the copper plate.

That would leave the center part of the copper and peltier device clear of glue and so on.

Would that work???
superglue melts at high heat
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