Cooling more than the windings

[Jeff Wohlt]

Been trying to create something new that can cool the internal parts of the motor such as the rotor, windings, etc while running....even after running/racing this can keep running to pull heat out of the motor and cool it down very quickly.

It is a 5V fan that is vac formed around the motor. Granted, you do have to have holes in the front and rear of the motor housings but that is easy to do on any motor or if you change the bearing. Many top motors already have holes.

I hook it up to a very small 300 mah 7.4 lipo from my plane and she runs forever. Small brushless fan in it. It is a 40mm fan but considering a 50mm.

It is not perfected yet a bit of sizing to do but I think it has great potential. All that needs doing is sticking on and cut your motor exit wires and then seal around the wires with a little silicone.

Maybe a person could even hook the ESC behind it and blow on it as well.

Tell me what you think.

[blackcat26]

Looks pretty promising Jeff. Does it cool better than the water jackets do?

[m4a1usr]

My opinion is probably already known about how truely effective water cooling is to a motor. Brushed or brushless. I think your right on track Jeff. Most dont realize why an outrunner is typicaly a cooler running motor then an inrunner even though they are less efficient. Its simply because they tend to have open end bells and also the fact that they have a larger rotating inner mass that in effect moves the air around inside the motor and they remain cooler even if they generate more heat then a comparable powered inrunner. Getting the heat out of a motor from the core is the key to motor longevity and more effective use of power.

I can see this gaining favor with builders if they truely understand the heat removal process. I dont recomend not water cooling a motor but this method does truely get to the source of where heat buildup weakens a motor. Use both methods and you are going to be about as good as it gets without going into very complex systems.

2 thumbs up Jeff!

John

[hydromaddicted]

I like where your going with this one, why not try to incorporate a water cooling ring you could feed with your little chill bottle and make a cold air blower?

[Jeff Wohlt]

Yep, the pump and water with this could do the trick and work from the same small lipo pack. I bought the electric swiffer today but still enjoying how well it clean my wood flors and tile to tear it apart for the pump. Wish I could find those pumps becaus they look about right and pump easy and quiet and run on 4 AA cells.

I do not say not to water cool...this is just a nother way to remove heat from the internal parts. What I like is after a run you just leave the fan on for a bit to bring down the heat from the arm and the bearings.

Still playing with it and my vac former.

[wolf IV]

ill tell you what, cooling my esc's this way in addition to standard cooling is extreamly effective!!!! in fact fans are what makes it possable for the timo to come home without smoking my esc's!! its amazing what a little air moving in these hulls will do!! looks good jeff, now i know what your talking about

[hydromaddicted]

Jeff
Have you seen these micro pumps?

http://www.micropumps.co.uk/TCSproducts.html

[wolf IV]

wow!!! great find. this would be great in a 1/8 scale

[Jeff Wohlt]

Yes but the price is what killed it for me. I found some cheaper ones for $12 and pretty small. We already know that the ice water made a BIG difference in cooling the ESC and motor with a closed system. Tom at Octura still says a rudder with an inlet creates more drag than you know. Not sure I totally believe that. When most of us run in the summer the water temps are anywhere from 80-90 degrees here...still effective but not much.

Any new big boats I run will have the pump cooling system..simple and more effective than anything else out there. Using a copper plate on the ESC is also about 20 times better than alum for pulling heat off the fets.

[ozzie-crawl]

i used to just run fans on my mystery 200a esc,s worked very well, big plus was when the boat stops the fan still keeps cooling the esc.
i found there was no real temp diffrence at the end of a run compared to water cooling.
this also allowed the motor to just have its own cooling line

[hydromaddicted]

Why not just make something like this coupled with fan and your cold water pump and air condition the inside of the boat?
You could add Propylene Glycol to that system=food grade antifreeze it has better thermal conductivity than water

http://www.micropumps.co.uk/TCSimages/TCS-330%20(Large%20radiaitor).jpg

[egneg]

That coil is over $80.00 usd!

[hydromaddicted]

That coil is over $80.00 usd!

That's why I said make one you could do it with copper. I just used that as an example of what you could do.Perhaps you could make one out of a CPU cooler?
Even though what's an extra 80$ if your building the hot set up and you wan't to keep your 1000$+ motor/esc/cell combo cold.

[hydromaddicted]

This is more like it.Just cold water feed the pipe.
http://www.newegg.com/Product/Produc...82E16835233021

[RandyatBBY]

James have you had any experience with the pumps? I need two for the HRP CC