Get the Novak black fan
My Novak fan (the stocker that came with it) is missing a tooth and basically, is on its last legs. For the first time, I thermalled! It happened at 136 degress. I am running a taller gear ratio (9.375) on a 3.5, but I wanted blistering speeds (thank you car action speed run!). If your ratio is tooo tall for your motor, expect thermals. I read on another post somewhere, that the Novak black fan is much stronger, lessening chances of thermals on the speedo. In addition, cut a hole or two in the body (like nitro) to get that extra cooling. I ran a body with no holes, taller gearing and I thermalled...everything that is against my grain...but I had to try it. And if anyone wants to know, my motor hit 136 degrees...well into its safe zone.
R40-Pondering a new Red Dot
Hara Pro4-GTB/3.5/Max Amps-yea.
Pondering moving on to Xray-have to go with a winner. If you cant beat em, join em!
I gear to run and win, not to THERMAL!