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Old Nov 13, 2008, 10:45 PM
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El Dorado Hills, California
Joined Nov 2005
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motor brake on esc - why is it needed?

Why would I want the motor brake on vs. off on my brushless ESC?
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Old Nov 13, 2008, 10:56 PM
charge em up!
Zamfir's Avatar
Colorado
Joined Jul 2007
780 Posts
motor brake forces the prop to stop spinning and allows it to fold for gliders. It can also be used to slow the speed of the plane when going straight down when doing pattern type flying to keep the speed the same as the rest of the routine.
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Old Nov 13, 2008, 11:09 PM
Detroit 2-stroke junkie
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Also is used for AV/AP where vibration will reduce the quality of the picture.
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Old Nov 13, 2008, 11:11 PM
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El Dorado Hills, California
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So, is it better to have the brake on to reduce vibe and drag?
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Old Nov 13, 2008, 11:18 PM
John,not Zerts.JOHN, NOT Zerts
USA, AZ, Chandler
Joined Nov 2007
1,840 Posts
Brake on is also good for beginners when you get those frequent prop to ground collisions. Also good for safety reasons in general but not good for 3D flying.
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Old Nov 14, 2008, 10:35 AM
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Xpress..'s Avatar
United States, CA, Alpine
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^Well, I use brake on and brake off for different 3D planes.
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Old Nov 14, 2008, 10:42 AM
John,not Zerts.JOHN, NOT Zerts
USA, AZ, Chandler
Joined Nov 2007
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Quote:
Originally Posted by Xpress..
^Well, I use brake on and brake off for different 3D planes.

I admit- I am a 3D noob, what is the criteria for brake on/off with 3D?
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Old Nov 14, 2008, 10:53 AM
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Chichester Sussex
Joined Aug 2007
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When the brakes off the propeller windmills which helps to slow the plane down, in 3D you want to be able to fly the plane generally slower and smoother so it's better to have it off - - so to speak .

The other place you'll notice a big difference is landing, one of my planes I fly in longish grass and belly land so have a soft brake to avoid breaking props. It takes a much greater distance to glide it in and comes in faster whereas the planes I don't switch the brake on you can fly them in to land a lot slower and more accurately.
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Old Nov 14, 2008, 02:33 PM
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United States, CA, Alpine
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Quote:
Originally Posted by Zerts
I admit- I am a 3D noob, what is the criteria for brake on/off with 3D?
I'll turn the brake on if I'm using a rubber band prop saver, but if I use a solid prop adapter, then I turn the brake off, to keep the prop from stopping in a vertical position, and breaking on contact with the ground.
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Old Nov 14, 2008, 03:49 PM
John,not Zerts.JOHN, NOT Zerts
USA, AZ, Chandler
Joined Nov 2007
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OK, the motors I use have such strong magnets they self-brake if the ESC brake is set to off. Just takes longer for the prop to stop spinning.
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Old Nov 14, 2008, 04:02 PM
I havent decided yet
Indiana
Joined Jun 2006
2,120 Posts
even with the strong magnets you will see that the prop will keep spinning on a down line with the brake off. that helps keep the speed down. once the prop stops spinning the plane will go faster. I dont use the brake on any of my planes. you really want no brake if your plane has a habit of gliding too far on landing. the windmilling prop will slow it down.
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Old Nov 14, 2008, 05:14 PM
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El Dorado Hills, California
Joined Nov 2005
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OK, so have to land in a small area (dead end road), so having the prop help slow down the plane would be a good thing for me. I'm not too worried about breaking props, they're cheap compared to the price if I overshoot my landing area while traveling too fast.
Thanks for the info.
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