Thread: Motor temps
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C.H.U.D.
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06.28.2005, 11:44 AM

I have a 12v DC computer fan pointed directly at my motor (2400xl (16.8v), heat sink (http://www.bk-electronics.com/catalo...oducts_id=1249), and Arctic Silver 5 thermal grease).

My truck is geared 19/66 w/ several weight reductions, though I'm still testing on gp3300's (no LiPo's, yet). Haven't weighed my truck so I can't tell you the exact poundage, but its lighter than stock.

Ambient was 95f this weekend, after running around the track (WOT wherever possible) my temps hung around 125f.

I have a bk 18120 (which easily handles the current and heat), so I don't have additional warmth created by the speed controller.

Where my fan sits, the body is ventilated, the fan pulls fresh air and blows it inline w/ the heat sink fins.

The fan, btw, is connected "directly" to the batteries (i.e., it doesn't go through the BEC which would only deliver 6v). @12v the fan is rated 35cfm and too low an amp draw to matter and I'm pushing 16.8 through it.

When performing speed tests pre-heat sink, pre-fan, and pre-thermal grease I was able to reach 170f w/in a few minutes. The cooling system makes a huge difference in temps w/ no noticeable performance hit (extra ounce for the heat sink and .19I @ 12v).

[edit]
Oh yeah, the fan is 80mm and looks like this -> http://www.bestbuy.com/site/olspage....=1074787987752

Yes, I thought the blue lights would be cute. Shoot me. :D

No I mean it, something must be wrong w/ me.
[/edit]

Last edited by C.H.U.D.; 06.28.2005 at 11:53 AM.
   
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