Mini MO5 motor fan heatsink

Saw this on RCmart.

http://www.rcmart.com/catalog/rc-3racing-m0519wo-motor-tamiya-p-29803.html?cPath=595_744_1389

Where does this fix?

sam i mounts on the left hand side of the steering rack, the fan then cantilevers off the chassis about the motor

Ooo.......is it effective...? I havent seen one with the motor mounted on the heatsink like the rest of the touring one.

not sure, have never tried one

heres a pic of one installed

Hmm interesting. Although Gregs zip tie heatsink worked good as well.
Thanks