Copper heatsink for BLX 2050kv motor.

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Klappars

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Arrma RC's
  1. Talion
I decided to try and reduce the temperatures of my Talion's motor since even on 4S it was getting quite hot.

I wrapped some copper foil around the motor 2-3 times to see if it reduced temps.

I ran the car on grass today for 2 4S packs worth and the copper did work! the temps were around 65-70 celsius (149 - 158 fahrenheit) before and with the copper it was around 48-50 celsius (118 - 122 fahrenheit).

Since only the silver fins on the motor are covered it did only reduce the temperature in that area so I intend to cover the rest of the motor can with the copper to make the temperature more even across the motor can. If anyone is interested I used 30mm wide 0.03mm thick copper foil.
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So that seems to work nicely! I'm curious how that would do on 6S in a warm climate. Been running at almost 190 F on the Talion with 6S because it's 95F here. So I started using the Yeah racing twin fan setup, and that dropped me 30 degrees in this heat so far. Would post a picture if I was home.... Here's the link to the fan

https://www.ebay.com/itm/Yeah-Racin...256619?hash=item1c64ebc26b:g:AAcAAOSw9IpX1R92

How much did you spend on the Copper?
 
I
So that seems to work nicely! I'm curious how that would do on 6S in a warm climate. Been running at almost 190 F on the Talion with 6S because it's 95F here. So I started using the Yeah racing twin fan setup, and that dropped me 30 degrees in this heat so far. Would post a picture if I was home.... Here's the link to the fan

https://www.ebay.com/itm/Yeah-Racin...256619?hash=item1c64ebc26b:g:AAcAAOSw9IpX1R92

How much did you spend on the Copper?
It was only £3.80
 
I’m not sure how it works there, but I see stuff from all over the world on eBay. That’s where I got these. Ordered it in blue for my Typhon as well. Try eBay and if you can get them, I do recommend. 30 degrees was a huge difference.
 
So that seems to work nicely! I'm curious how that would do on 6S in a warm climate. Been running at almost 190 F on the Talion with 6S because it's 95F here. So I started using the Yeah racing twin fan setup, and that dropped me 30 degrees in this heat so far. Would post a picture if I was home.... Here's the link to the fan

https://www.ebay.com/itm/Yeah-Racin...256619?hash=item1c64ebc26b:g:AAcAAOSw9IpX1R92

How much did you spend on the Copper?

Isn't this quite inefficient on a finned motor, as it's only contacting the fins and just creating gaps for more hot air in between?
 
Isn't this quite inefficient on a finned motor, as it's only contacting the fins and just creating gaps for more hot air in between?
Yes it is really but it is no worse than sticking a heatsink on the motor which won’t even be adhered properly to the motor. I don’t use this method anymore since I am running a better motor that doesn’t need any additional cooling.
 
Yes it is really but it is no worse than sticking a heatsink on the motor which won’t even be adhered properly to the motor. I don’t use this method anymore since I am running a better motor that doesn’t need any additional cooling.
What motor/esc are you running?
 
What motor/esc are you running?
I’m running a hobbywing MAX8 with a hobbystar 4082 1600kv motor. It has a good deal more torque than the standard motor and even geared for 60mph on 6S it doesn’t overheat. I highly recommend it.
 
Uhhh... did you measure the temp under the copper?
Because you can wrap your motor in a wool blankie and it will show awesome low temps on the outside. Because all the heat is trapped under there.
 
Uhhh... did you measure the temp under the copper?
Because you can wrap your motor in a wool blankie and it will show awesome low temps on the outside. Because all the heat is trapped under there.

That's a very good point actually. Like how they wrap victims of hyperthermia in a foil blanket
 
Uhhh... did you measure the temp under the copper?
Because you can wrap your motor in a wool blankie and it will show awesome low temps on the outside. Because all the heat is trapped under there.
Yes. I measured the temperature at the end of the motor which was not covered in copper foil.
 
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