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Old 01-03-2004, 11:38 PM   #61
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Calvin NG, The bigger, the better! Remember it is a "Pre-Race Cooler"

The "peltier" chip is "not" flexible. It is made of 2 ceramic plates, with 127 thermocouples sandwiched between them.
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Old 01-03-2004, 11:40 PM   #62
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ooooooooo thanx!

i kinda want to get one now

5 dollers is almost nothing compared to what we spend on r/c
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Old 01-04-2004, 01:49 AM   #63
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Team Pharis you really did a GREAT job.
It looks excellent.

Would is also be possible to control the temperature, so the minimum (or max negative) temp can be set?

I can imagine TOO cold also not being a good thing.
You dicribed a frozen car earlier....
This could make a drivetrain run bad freeze bearings and make composite brottle, or not?

Is it possible to integrate this cooler in a stand, cooling from the bottom instead of on-top?
Maybe 2 small fans at the side of the coolingfin?
So it wont be in the way when installing batts, etc....

When can I order one
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Old 01-04-2004, 08:48 AM   #64
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Pizzadude: I am not an electrical/machanical engineer, but I'm sure there is a way to regulate temp. Probally with limiting the volts/amps to the unit. I regulate temp by time on motor(as long as the phone doesn't ring. or kids, or wife).

To cold could be a bad thing.

Yes it could be fabricated useing a stand/fans. But I think the most efficient way is surface interface.

So far with my cars (TC3, XXX-S, STR-4) installing the batteries is not a problem, since the motor is on one side and batteries on the other.

I will be making a "very limited" run of these coolers for sale. The price should be about $60 + shipping. Private mail for info.
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Old 01-04-2004, 10:16 AM   #65
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teamphariswheel,
you have a pm ,lmk via email .

thanks
BIGDON
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Old 01-04-2004, 11:39 AM   #66
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is there any idea how u could put it on a 414mII

cause since the motor is attached to the bulkheads.....

u would probably have frost all over the bulkheads too (COOL)
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Old 01-04-2004, 09:05 PM   #67
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any more pics? getting excited want to get one
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Old 01-05-2004, 10:34 PM   #68
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I did some "hot lap" practice yesterday with some of my racing buddies and after full 5 min runs, motor temps were were in the mid 80's--I was starting in the mid 20 degree range. Starting with no pre-race cooler hooked up (ambient temp 68 degrees,yes we think that is cold in San Diego) motor temp at 66, when done with 5 min run temps were in the 110 degree range. There were alot of variables with these few runs (including winding up on my lid,thanks guys), but the difference was so great that I'm OK with the results. I will try to do some more controled tests, but I feel the best test is in a race condition anyway. Next we will try experimenting with gearing. I tried one run with pinion up 2 teeth(31/72-TC3-P2K-CS27), this would normaly "cook" this particular motor, but after 5 min, mid 130's and "wick'ed fast!---I made a 2nd generation proto-type today, larger heatsink/larger fan and did some bench tests. I'll post some pics.
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Old 01-05-2004, 11:07 PM   #69
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This is 2nd generation prototype Pre- Race Cooler
Attached Images
File Type: jpg supersupercooler6.jpg (185.9 KB, 272 views)
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Old 01-05-2004, 11:09 PM   #70
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Yes, It is 17.5 degrees F.
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Old 01-06-2004, 02:20 AM   #71
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Quote:
Originally posted by Calvin Ng
lol thats things massive

is there a way to bend the peltier so theres more surface area touching the motor???

or does it have to be flat
Bending a peltier is not possible... the thing is made of semiconductor chips (plenty of them) sandwich between two ceramic plates.

The picture posted above could be made more efficient by applying more solder between the curved plate and the flat plate... more heat conductance would be achieved...


Me, I'd rather use the peltier for keeping my beercan cold... A tipsy driver makes fasterr lap times (as long as he races clean)


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Old 01-06-2004, 09:17 AM   #72
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Quote:
Originally posted by rough512
...Me, I'd rather use the peltier for keeping my beercan cold...
hi there rough is this peltier thing available locally? in raon or alexan? thanks for any info

fred (marvi)
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Old 01-06-2004, 01:56 PM   #73
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TeamPharis, you got PM
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Old 01-06-2004, 06:10 PM   #74
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Here are the pics of The "SuperCooler" and The "SuperSuperCooler"--If there is enough interest in The "SuperSuperCooler" I may be able to make some of them available. Let me know PM
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File Type: jpg cooler version 1 and 2.jpg (153.9 KB, 235 views)
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Old 01-06-2004, 06:11 PM   #75
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another view
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