Is the motor cooling fan a gimmick?

[Maskle]

I have installed the CC blower on my motor to help keep the temps down but I'm wondering if it's really just a gimmick. The flow rate from the fan seems low and is only covers a small area over the motor. Has any one with a temperature gun done measurements with and without the motor fan to see if really makes a difference. I'm thinking it would be better just to cut a hole in the body and get rid of the fan altogether.

[mamba max1]

No, it does work. If you have an IR temp gauge, you will see temps drop 10-15 degrees.

[Curt S]

It works. Was playing in 85 degree sand in fl last week. Its a small drop in temp but it does work. Surprisingly it held up the sand running through it.

[bazookamaxx]

the heat sink is pretty good but the fans from castle are notorious turds, you can get a good fan off ebay and it will work even better

[orca44]

I have been thinking of putting a fan on mine as the temps are at 130 degrees on the motor. What brand of fan would be a good choice?

I bought mine used and it was a brushed revo upgraded to brushless, it has a hobbywing ez run motor kit.
I have only used 4s on it.

[Maskle]

No, it does work. If you have an IR temp gauge, you will see temps drop 10-15 degrees.

10-15 degrees does not seem like a lot to me. Do you know how much difference it makes if you cut a ventilation hole in your body?

[n_gifford]

Vented body is by far the best solution, but my fan helps to keep mine about 10-15 degrees cooler as well. Every little bit helps when you're running hard.

[Maskle]

Vented body is by far the best solution, but my fan helps to keep mine about 10-15 degrees cooler as well. Every little bit helps when you're running hard.

Since I have been running 5S I have noticed ESC and motor are hotter. The ESC fan is often on now whereas it didn't seem to when I was only on 4S. I was hoping to get away without venting my body (weakening it/ letting debris inside) but it looks like it's the best thing to do. Thanks n_gifford.

[87 GN]

still doesn't replace proper gearing, but it does help temps some.....
vent hole