Mamba XL Mounting Mod for HPI Baja

[Kirkinsb]

If you are planning on doing a lot of big jumping, you may want to consider this mod to help the ESC live through the impact of the landings. The foam is actually a seat cusion that I bought from a hunting store. It is really squishy. If you like this mod...give it a shot.

http://www.youtube.com/watch?v=RJD5XObjeVA

[_paralyzed_]

nice mod.

I'm not trying to be a killjoy, but where you have the motor fan mounted is doing absolutely nothing to help cool your motor. It needs to be tight next to the motor, and even then without a shroud the effectiveness is marginal.

[Kirkinsb]

Hi parlyzed, I did quite a bit of testing with these fans on my 1/8 scale systms. It seems about 3/4 of an inch or so is where these fans that I use produces the most thrust... I tested this by using a small digital scale that will do ounces accurately. Up close to the face of the scale, the thrust was not as much....not sure why, back it off a bit and the thrust picks up. Just to double check, I took several temp readings with the Castle Fan shroud on my 1/8 scale vs my fan set up...and the temps were always lower with my fan set up. That is just my experience. I have not had ANY luck with those fan shrouds. Now heat sinks with fans on them do well.

I also found that more of the motor heat is in the end of the motor (the side with wires coming out) That end of the motor is always 10-15 degrees hotter than the pinion side...this has been a common theme with all my castle motors... That is why I always install the fan towards the side of the motor with the wires. Never had a motor failure with this set up and they pretty much run cool enough to stay happy.

Again, just my experience. Do you have a brushless Baja...they are pretty dang fun. Thanks man.

[Arct1k]

Watched your T video that thing is flying - What gearing are you running?

[Kirkinsb]

Stock Gearing. 14t pinion...57 spur. Thanks man! Lots of fun!