what fan for feigao and heatsink/clamp

I just got my 6 pack of 40mm 12volt fans and bolted one to the chassis guard next to the motor and ran the piss out of it. On 14.8 volts it blows harder than an out of work porn queen on crack and dropped my motor temps from 185 to 155 and did it on a hot day (around 80 deg). My run times are 23 minutes (at race pace) the the motor hits 155 deg's after about 6-8 minutes and stayed at that temp throughout the whole run. I only have one chinese motor and will not run it again without a fan. Heres a pic of the install. http://s283.photobucket.com/albums/k...riedfatnhorny/