You just got your B74, now you need a motor fan to help reduce fade over longer runs.   Get the Schelle B74 Fan Mount and Wire Clip set.  It's simplistic design and included wire routing clip will make the install a breeze.  No servo tape, no cusomization needed.   Fits all 30mm fans.  We recommend grabbing a fan with an aluminum housing....they just take the abuse better.

•    You need a fan on your B74, don't fuss with servo tape!
•    Low profile fan placement, hovers a fraction of a millimeter off the chassis
•    Direct bolt on fit, installs in minutes.  Comes with super-dialed wire clip to keep those wires from getting sucked into the drive-train.
•    Includes 3-D printed fan mount, wire clip, M3x16 BH screws for fan, M3x10 BH screw for mounting.