Hi Peter,
The fan on that Neu is at the front and it is centrifuging out air at the front.
Unfortunately, therefore, the airflow through the motor is rear to front.
We 'duct' the chin intake air directly to the rear of the motor. This duct works best if it by-passes the front of the motor with the incoming air. We also block of any cheek intake near the front - or duct this to the rear also/instead.
We just block this off.
The idea is to create a +ve pressure differential rear to front with the cool incoming air. This will allow the motor to pump cool through itself.
Our motors are at 40* to 50*/
Brian
Last edited by serious power; 04-08-2015 at 10:21 PM.