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Eman77 -> RE: Official E-FIRESTORM thread (5/28/2008 9:48 PM)
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quote:
ORIGINAL: 73 I'm dropping the order for new brushed motor, and has got instead a old-school Novak ss5800 brushless system. Need some opinion here as I'm new to brushless, and still learning along the way. Is it normal for the ss5800 esc to run hotter than a brushed motor esc? I've dropped from a 17T pinion to a 15T on the E-Firestorm, and the Novak esc heat sink is still pretty hot after 5-10mins running (with occasional full throttle). The Novak comes with Thermal Shutdown protection, but I'm trying not to get to the shutdown. How do we know if a brushless esc is overheating? Also, installing a fan above the heat sink might be my next project. So I gather I'll need a 5V computer fan, but have no idea how to hook up power supply for it. Any advise? I don't have an E-Firestorm, but I run a SS 5800 system in my Stampede. I've goofed with 15, 16, and 17T pinions on it. And yep, I've hit the thermal shutdown while bashing (d'oh!). But after it cooled down, it runs fine. For me, that ESC does indeed get scorching hot. So I installed a fan above it, blowing down on it. They don't really make one (that I know of) specifically for the SS 5800, so I bought this one (see link below). I had to squeeze it around the ESC, but it works (good thing plastic is flexible), and screws into the ESC mounting place my ESC sits on. The wires from the ESC itself are kind of in the way, but you can work around it. http://www3.towerhobbies.com/cgi-bin/wti0001p?&W=000412036&I=LXJUR6&P=K That's more than I wanted to pay for a fan, but oh well. Best thing is, it works great. ESC temps are way, way lower, and no thermal issues. I'm quite happy. It has a plug on it so that it shares the wire to the Rx with the ESC itself. When you turn the ESC on, the fan turns on and runs till you turn the ESC off.
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