View Full Version : How Hot is Too Hot?
Mortificate
03-21-2007, 11:32 PM
I am just curious, how do I know if a Brushed or Brushless motor is running too hot. My Old brushed motor would get pretty hot after running a hover for about 10min or so on my CPP, but not spit sizzling hot.
My new BL gets pretty warm but nothing too bad. I added another heat sink to it just to be on the safe side. Thanks guys.
slikrx
03-22-2007, 02:15 PM
From what I've read, 140 degrees F is about the hottest that's "safe" for electronics & motors. I would guess people would suggest even lower for better longevity.
I know people use those IR thermometers and are getting temps in the 115 -125 range and seem fairly happy...
BTW, 140F is uncomfortably hot to the touch. You can hold it, and it won't burn you, but it will get a grimace or scowl from you. ;)
chopperdudes
03-22-2007, 03:52 PM
i've got a heat sink on my motor and let me tell you, mine gets REALLY hot, too hot to touch let alone hold. this is because i have a 100% flat throttle because i do average 3D with it. it has a stock motor, i dun really care if i burn out my main motor cuz they're cheap, and really, for you to do any reasonable 3D with stock motor, you'll need to run 100% flat throttle curve, i will invest in a 2nd heat sink ASAP though.
Mortificate
03-24-2007, 01:30 AM
cool, thanks a lot guys. Went out and picked up two heat sinks for each motor (2 on BL main, 2 on each tail motor). I hope that will keep em nice and cool. I also cut a bit of my windshield out sense I noticed the main motor stays cooler with out the canopy. Still looks nice and should provide some additional cooling.
chopperdudes
03-24-2007, 10:39 AM
mortificate, what kind of flying are you doing? if your going for 3D, i'd suggest you give dd tail a shot.
Mortificate
03-24-2007, 07:54 PM
mortificate, what kind of flying are you doing? if your going for 3D, i'd suggest you give dd tail a shot.
LOL, I am just learning. Started helis about 2 months ago and do most of my flying in my living room. Needless to say I have gotten REALLY good at hovering the CPP but my FF needs a lot of work. I have RF G3.5 and practice on that constantly. I am thinking of trying out the DD tail with the Axe tail motor.