hypothetical liquid cooling system

hi all...well all i can say is liquid will carry heat away 2x better than air, the only problem is getting the heat through the motor casing to the water so in the case of that boat jacket, it would not work very well if used on a motor with cooling fins cut on the side.
i think the system has potential. maybe a pump on the rear of the motor, just a low loss pump.
looks to me like that pipe is car brake pipe made from copper and is really cheap to buy a roll. so bend it into shape as a radiator and wrap some around the motor as a cooler coil (bends really easy). then u just need a pump. hmmmmm.......
maybe a water cooled brushless e-maxx coming soon

[lincpimp]

Originally Posted by chrismechanic

hi all...well all i can say is liquid will carry heat away 2x better than air,

Yes, get the heat off the motor into the water, then to a radiator where the sir has to remove the heat... Circular logic as the water is now air cooled, not the motor. Might as well add the weight that you would have with all of the water cooling up, and make a giant heatsink for the motor.

Real car water cooling setup only works well due to volume of water and forced air cooling of the radiator, and the increased surface area the fins afford.

Watercooling is just a bad idea for vehicles. It only works well in boats due to the fact that you have an ass load of water and at 20+ mph flow is quite high.

[transtalon]

I had a working watercooling system in my 61 mm Lst2 truck. It works real good cooling your motor but for the ESC it's not. My motor 1527 1D started
out with 140 but with watercooling it did not get up to 100 degrees. The ESC is another story as the instant burst of current could not be dissipate fast enough by watercooling that I burnt 2 ESC. I had a miniature diaphragm pump. The TCS micro pump is not good when running, it's only good on bench test. Only my opinion, the trick is getting a pump to flow water but it does work and it's not that heavy.

[sleebus.jones]

Originally Posted by transtalon

My motor 1527 1D started out with 140 but with watercooling it did not get up to 100 degrees. The ESC is another story as the instant burst of current could not be dissipate fast enough by watercooling that I burnt 2 ESC.

So you had a motor that wasn't hot in the first place, and made it even less hot, but toasted 2 ESCs in the proccess. Sounds like a win to me!

[jayjay283]

Originally Posted by sleebus.jones

So you had a motor that wasn't hot in the first place, and made it even less hot, but toasted 2 ESCs in the proccess. Sounds like a win to me!

rotfl more or less right

Originally Posted by lincpimp

Watercooling is just a bad idea for vehicles.

well no the reason a car has water cooling is the surface area on the engine can not dissipate the heat fast enough so the water carrys the heat to the rad.... which has 5 times maybe more surface area as you said. but i hope my motor wont have an internal temp of 450 degrees or so. so im not going to water cool my maxx for that reason. if set up right it dont need water cooling

[lincpimp]

Originally Posted by chrismechanic

well no the reason a car has water cooling is the surface area on the engine can not dissipate the heat fast enough so the water carrys the heat to the rad.... which has 5 times maybe more surface area as you said. but i hope my motor wont have an internal temp of 450 degrees or so. so im not going to water cool my maxx for that reason. if set up right it dont need water cooling

Maybe I should repharse that. I meant that water cooling was a bad idea for RC vehicles...

And yes you are coorect about the surface area to mass ratio of the engine to the radiator. The water is simply a method to transfer the heat.

I think the systems for rc vehcile need to have at least 4-6oz of water (or glycerol) to work well. Even a large heatsink with plenty of airflow will not drastically lower the temps of an ineffecient motor, the heat is being produced in such a volume that the external surface of the can cannot conduct it well enough, unless the liquid circulated around it was super cooled.