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motor cooling technique

motor cooling technique

Old 05-03-2007, 04:26 PM
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Go pick up a can of conpressed air, it is nothing but a can full of liquid nitrogen which is extremely cold, about -170 deg. F. It will evaporate as soon as it hits around -150 deg. F so you don't have to worry about ruining electronics as long as your battery isn't plugged in. When you hold the can upright it releases normal every day air. When you hold it upside down it releases compressed air. Think about dropping your car on the track with a motor that temps around -75 deg. F and being able to cool it in less then 30 seconds. The cans come with a tube just like a wd-40 can so it is easy to spray the liquid nitrogen where ever you want it to go. Not to mention the cans are dirt cheap and you can use it to get in just about anywhere.
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Old 05-03-2007, 04:31 PM
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You can buy freeze spray...

I don't find they are that effective for cooling motors, but they are good for soldering and such
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Old 05-03-2007, 04:34 PM
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http://www.jaycar.com.au/productView...Max=&SUBCATID=
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Old 05-03-2007, 05:02 PM
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one problem you might have is the epoxy holding the magnets doesn't like to go from hot to cold very quickly, it might work though.
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Old 05-03-2007, 06:46 PM
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IT works.. we used to do this all the time.
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Old 05-03-2007, 08:24 PM
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Originally Posted by ford_racing
one problem you might have is the epoxy holding the magnets doesn't like to go from hot to cold very quickly, it might work though.
It's not going from hot to cold. It's going from 72 degrees to really cold slowly.
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Old 05-03-2007, 08:53 PM
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Originally Posted by ford_racing
one problem you might have is the epoxy holding the magnets doesn't like to go from hot to cold very quickly, it might work though.
I have a stock motor that I cprayed motor cleaner o n after a heat to cool it and the magnets cam e loose from the can and the armature will not rotate. TRASHED
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Old 05-03-2007, 09:08 PM
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A trick I learned from some local oval racers is to use bubble gum remover spray.....or just buy a much more cooler or one of crazy ronnies coolers they actualy leave frost on the motor can. I wouldnt suggest cooling a motor right after a run though as the metals and other materials that make up the armature dont react well to sudden cool downs remember metal expands when heated and sudden exposure to intense cold changes the molecular strucure and thus can change the shape and strenghth of the metal I usualy spay it just before the race begins and let the motor cool on its own afterwards.
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Old 05-03-2007, 09:32 PM
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Or, just toss it in a plastic bag and put iti n a cooler with ice or the fridge....run for about 10 seconds before you toss in the car.....way colder than any spray or peltier cooler ever will....

Later EddieO
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Old 05-13-2007, 09:51 PM
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This method definitely works. Just make sure to use good bags that don't leak. I did this to a friend's stock motor at the Cleveland Champs a few years ago. He was on TQ pace in the last qualifier when the motor tag fell out a few laps from the end after a collision with some cars that had crashed in the sweeper.

Investigation showed that the tag had gotten wet due to the bag leaking and then the tag shrunk when the motor got hot during the run. The collision flung it out of the arm and jammed in between the arm and magnets. We were able to duplicate this to confirm our suspicion with another motor that had soaked with his. However, the motors were completely submerged in the leaky bag for over 7 hours so that probably was the biggest impact on the tag. I do not know if that would be an issue if the tags had not been drenched for a shorter time.

-Rich


Originally Posted by EddieO
Or, just toss it in a plastic bag and put iti n a cooler with ice or the fridge....run for about 10 seconds before you toss in the car.....way colder than any spray or peltier cooler ever will....

Later EddieO
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