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Old 01-06-2004, 06:13 PM   #76
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how much does one of those beuties go for?
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Old 01-06-2004, 06:19 PM   #77
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You should try to get the pieces of copper brazed together instead of using expoxy. I am sure the thermal transfer rate would increase dramtically.

Very cool item. My version is at the machinist right now, buts and out of cooler design that I have been working on for a couple of months.

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Old 01-06-2004, 06:22 PM   #78
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Intemission- as I said in one of my earlier posts, I will be making a "limited" # of these and will be asking $60 + shipping to cover my time and materials. I am not a buisness, just a guy in his garage. If I get interest in the 2nd prototype The "SuperSuperCooler" I could make these for $75 + shipping, but will have to see if i can even get the cool looking larger heatsink & clear/blue fan..private mail for more info-
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Old 01-06-2004, 06:28 PM   #79
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EddieO, I am not sure if I need to go much colder. These get motor temp down in the 'teens in about 20 min.

I'll have to break out the torch and see if I remember "how" to braze!
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Old 01-06-2004, 06:46 PM   #80
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Probably would get colder quicker....aka using less energy. Not mention I think it would stand up better to use and it would look a lot more professional if you were gonna sell it.

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Old 01-06-2004, 06:49 PM   #81
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I love lighting a torch at nite! OOH! AHH!
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Old 01-06-2004, 08:10 PM   #82
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Darn! I can't find my box of brazing rod. I'll have to go by Home Depot tomorrow, I know where theres' is. I lit my torch anyway! OOH! AAH!
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Old 01-06-2004, 08:46 PM   #83
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heh......easily entertained I see.....

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Old 01-07-2004, 11:27 PM   #84
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Tried the brazing and it is definitly a good bond. But the heat needed sure dis-colors the copper. Took "alot" of polishing to get the sheen back.

My neighbor (the aero-space engineer), got me some "MSPBA"-Micronized Steel Polymer Bonding Agent. He says that it is stonger than the brazing and will have better cold transfer properties. Plus I will be able to use thermal transfer compond at this interface (it will not withstand the high heat of brazing).
I'll put one together and put it to the test.

I'll post some pics of my newest prototype-it has nothing to do with r/c. It will be a pit table beverage cooler.

Cold Coors Light, Anyone!
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Old 01-08-2004, 02:16 AM   #85
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Quote:
Originally posted by marvi
hi there rough is this peltier thing available locally? in raon or alexan? thanks for any info

fred (marvi)

Fred,

The peltier module (only) is not available locally. I ordered mine from allcorp., in California way back in '99 for overclocking purposes but never got to installing it. PM me if you want to acquire it.

I seem to recall seing one of these Car refrigerators that run on 12V in one of the local malls. I believe these units use Peltiers for cooling...
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Old 01-08-2004, 06:58 AM   #86
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Hey, Team Pharis Wheel, These things look awsome, is their any chance you could maybe make a step by step of how to make one and what materials etc we need, Cheers,

Paul
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Old 01-08-2004, 08:43 AM   #87
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rough: thanks for the info oh yeah, ive seen 12v car refs before but i had no idea on the technology behind those ill look for them next time im at the mall. i think ive seen some in outdoor shops.

sent you pm re. your peltier module
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Old 01-13-2004, 11:12 PM   #88
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Just an update of real time race testing...

I raced this weekend and used the "SuperCooler" and Wow! I didn't notice to much at start of races, but at the 4 min. mark of 5 min. heats, I definitly didn't feel the normal drop off due to heat.

I sold all the units I had brought with me to fellow racers, and everybody reported similar findings.

Air temp was around 82 degrees and pre-race motor temps were down to 22 degrees.

I still have a few left, if interested. email at [email protected]
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Old 01-14-2004, 06:34 AM   #89
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you could also give the motor a quick spray of cold spray just before the race, doe sthe same thing.(verycold spray used on burns)
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Old 01-14-2004, 06:40 AM   #90
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YGM
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