I know I posted some pics of the fan bracket That I made from a 42mm Tekno motor mount so I thought I would kill two birds with one stone here. After two races the fan bracket couldn't have worked better! It doesn't move on the motor, even after a good lawn dart landing. Motor temps dropped about 18 to 20 deg. It was ran on my Xerun 2000kv motor that I have now lost count the number of races it has on it and have only had to replace the bearings once. The Xerun normally temps at about 155 to 160f (witch ain't bad) after a 12 min. main. With the fan it is now down to around 135f. This coming weekend I will try it on one of my CC 2200kv motors that tend to run a little hotter, around 170/180f geared for the same mph.
Here is a pic of the bracket installed on the Xerun with a 40x40x10mm Sunon fan.