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Old 09-13-2011, 10:21 PM   #16
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Have you tried this with a fan mounted on top of the sink? What is the difference in temp with just the sink?
I honestly have not. Over the weekend I can and let you know...
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Old 09-14-2011, 07:36 PM   #17
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I honestly have not. Over the weekend I can and let you know...
No problem, just asking.... if the goal is to reduce heat, then the combo may get you more gear....
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Old 09-17-2011, 10:37 PM   #18
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Well after hearing all of this i decided on this fan heres a link to it! http://www.xsfans.com/index.php?main...roducts_id=861
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Old 06-13-2013, 02:26 PM   #19
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If you're using Novak motors I find their Motor Sleeve Heat Sink works well. It replaces the colored sleeve on Novak's Ballistic, Velociti and SS-Series motors and wraps directly around the stator. Used with thermal paste it works quite well...



...here it is installed.

I wish that Novak would continue to make this heat sink. Its such a great idea and so hard to find one these days since Novak has stopped making them. They would work well in VTA.

The only suggestion I would make is instead of making is a solid round circle, they could cut it close to the fins and use two small screws that thread into the fins so that once you install the heat sink, you can tighten the screws and its clams around the stator tight for better heat dissipation. C'mon Novak, bring back the ingenuity..
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Old 06-13-2013, 06:44 PM   #20
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Well after hearing all of this i decided on this fan heres a link to it! http://www.xsfans.com/index.php?main...roducts_id=861
That's going to be crap!

It's 12V so it will run even slower on your car even if wired directly to the ESC + and - (which I wouldn't recommend doing anyway as it's sometimes possible for the ESC to draw so much current under accelleration that the fan will actually stop, but that does depend on the fan etc)

It's cheap, but only meant for cooling chipsets etc in PC's
It will be better than nothing, but only just
You'll be far better off buying something 'fit for purpose' like the R1 Works or Geisha

My own (we're allowed 40mm fans) is a modified old LRP/Nosram heatsink with high power 5V NMB fan (320mA)
It now faces the other way with the fan in front of the motor etc, gives better weight distribution.

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Old 06-13-2013, 06:56 PM   #21
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Don't need one, motor don't get hot enough
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Old 06-13-2013, 08:36 PM   #22
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Ill be running in VTA class with an Xray T3. Do I need the fan and heat sick is a question I can't answer yet, just finished building the car. I have seen a lot of guys at the club run fans to keep that 25.5 cool. What I liked about the heat sink that Novak made is that it just took place of the aluminum ring and added the benefit of cooling fins. It also allows you to mount a small fan on it. I have plenty of space facing the back of the car.

If anyone has one of these older heat sinks on their velocity motor, I would love to make you an offer to buy it from you if you're not using it.
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