MMM: Fan activation temp?

[simplechamp]

At what temp does the fan activate on the Mamba Monster? I just read in the RC Car Action 2009 Buyers Guide that it turns on at 150F. Is this correct?

The reason I ask is because my fan has been turning on intermittently during my runs and I thought nothing of it. With my IR temp gun I was only getting readings of 120F external and I thought it was normal for the fan to come on. That's what it's there for right? I know internally the temps would be a bit more than outside on the case but I didn't realize it would be 30F difference.

I don't like that my internal temp is getting up to 150F or more, especially since my brushless E-revo is only geared for about 33mph and I'm a pretty conservative driver. I wouldn't expect Castle to set the fan to activate when things are already way too hot, but 150F seems high to me. With my gearing and how I drive the fan really shouldn't have to turn on at all.

So any ideas here about the fan activation temp? Does the fan only activate when things are way too hot, or is it normal for the fan to run?