RCCrawler Forums

Yawzer · 08-20-2008, 08:15 AM

According to all I can find - you cannot run 2 brushless motors on a single ESC - just would like some expert verification before proceeding - thanks

Scattman · 08-20-2008, 08:46 AM

Nope, can't do it.

crawl rookie · 08-20-2008, 01:43 PM

No, you really cant do it

Tzi · 08-20-2008, 06:07 PM

Actually from what I have read...you can do it... but its not as easy as just plugging them in.
Firstly it can only be done when both motors are mechanically connected... by that I mean they both turn at the same speed at the same time, and will never get out of sync.
Secondly... you need to make sure that the windings of the motors are in sync. So that means that coil 1 energises on both motors at the same time, then coil 2 , etc etc
As far as I know, you can do this by using a small battery, like 1.5v or whatever... and lightly tap the 2 of the 3 wires on the battery (dont hold em on or you'll fry it)... which will rotate the motor to a certain point. If you do this on both motors, and get them lined up EXACTLY the same as each other.... you can then run 2 motors off the 1 esc.
That said....I read this somewhere on the net... and havent tried it myself.

You CAN buy a dual brushless motor for airplanes, where 2 motors share the 1 shaft... and I'm pretty sure they sell a special esc for it, which may just have more grunt, or it may actually support 2 motors... dunno.

emaxxjeremy · 08-20-2008, 07:26 PM

Quote:

Originally Posted by Tzi

Secondly... you need to make sure that the windings of the motors are in sync. So that means that coil 1 energises on both motors at the same time, then coil 2 , etc etc

that in itself will stop it. the motors will not be or stay in sync. not to mention finding an esc that will handle that much current

Andsetinn · 08-23-2008, 08:28 AM

It can be done,,, on certain ESC and motor combinations. I would recommend instead that you use 2 ESCs connected by Y wire to the receiver.

08-20-2008, 08:15 AM	#1
Yawzer Quarry Creeper Join Date: Nov 2007 Location: Bozeman, MT Posts: 292	2 Brushless - 1 ESC According to all I can find - you cannot run 2 brushless motors on a single ESC - just would like some expert verification before proceeding - thanks

08-20-2008, 08:46 AM	#2
Scattman Official Cook of the ECC Join Date: Dec 2005 Location: Hawthorne, Florida Posts: 2,653	Nope, can't do it.

08-20-2008, 01:43 PM	#3
crawl rookie Rock Crawler Join Date: Sep 2005 Location: IDK Posts: 852	No, you really cant do it

08-20-2008, 06:07 PM	#4
Tzi Quarry Creeper Join Date: Mar 2006 Location: Australia Posts: 495	Actually from what I have read...you can do it... but its not as easy as just plugging them in. Firstly it can only be done when both motors are mechanically connected... by that I mean they both turn at the same speed at the same time, and will never get out of sync. Secondly... you need to make sure that the windings of the motors are in sync. So that means that coil 1 energises on both motors at the same time, then coil 2 , etc etc As far as I know, you can do this by using a small battery, like 1.5v or whatever... and lightly tap the 2 of the 3 wires on the battery (dont hold em on or you'll fry it)... which will rotate the motor to a certain point. If you do this on both motors, and get them lined up EXACTLY the same as each other.... you can then run 2 motors off the 1 esc. That said....I read this somewhere on the net... and havent tried it myself. You CAN buy a dual brushless motor for airplanes, where 2 motors share the 1 shaft... and I'm pretty sure they sell a special esc for it, which may just have more grunt, or it may actually support 2 motors... dunno.

08-23-2008, 08:28 AM	#6
Andsetinn Newbie Join Date: Nov 2007 Location: Iceland Posts: 30	It can be done,,, on certain ESC and motor combinations. I would recommend instead that you use 2 ESCs connected by Y wire to the receiver.

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