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Old Mar 12, 2011, 06:43 PM
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Beaumont tx
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brushed motor, brushless ESC

The new ESCs I have say that they are for both brushed and brushless motors. How do I wire the 3 ESC leads to the 2 MOTOR leads?

My thought is to leave the middle ESC one off and connect the oiher two to the motor so I have the correct motor rotation.

How much disaster am I courting????

howell
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Old Mar 12, 2011, 07:10 PM
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pda4you's Avatar
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What makes you feel this will work?
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Old Mar 12, 2011, 07:26 PM
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Toronto Canada
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I've never used a brushless ESC with a brushed motor, but if designed so that it initializes properly, I don't see any reason why it wouldn't work.

One of the 3 wires on a brushless system is used for position sensing.

If one of the 3 wires is disconnected, the ESC should still be capable of pulse width modulating the remaining 2 wires to control the speed of the brushed motor.

In the diagram below, with one of the wires removed (A for example), BH and CL would then be pulse width modulated to control the brushed motor. BH and CL would continue to control the speed of the brushed motor because they would not be receiving any new position sensing information because of the disconnected wire.

The only difficulty that I see is the initialization sequence. It would be up to the manufacturer to design the ESC to ensure that it initialized properly.
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Old Mar 13, 2011, 04:23 AM
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Bruce Abbott's Avatar
Hastings, New Zealand
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Quote:
Originally Posted by gwinhh View Post
The new ESCs I have say that they are for both brushed and brushless motors. How do I wire the 3 ESC leads to the 2 MOTOR leads?
The motor may be connected between two particular phase wires (eg. blue and yellow) or all three phase wires may be connected to the motor negative and battery positive connected to motor positive (forward only type).

The correct connections (and also what programming is required) may not be the same for different makes, and if you get it wrong the ESC could be damaged. Therefore you should read and follow the instructions which were supplied with your ESC!
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Old Mar 13, 2011, 04:37 AM
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Staffs, UK
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Quote:
Originally Posted by gwinhh View Post
The new ESCs I have say that they are for both brushed and brushless motors. How do I wire the 3 ESC leads to the 2 MOTOR leads?
What are these "new ESCs" and what do their instructions say about connecting them to motors ?

Steve
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Old Mar 13, 2011, 10:09 AM
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Beaumont tx
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What makes me think i will work is that the instructions say it will. However, it gives instructions ONLY for 3 wire brushless motors. "New" means bought within the last month; one brand is electrifly.

I'm new at this, but I read instructions and ask questions.

howell
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Old Mar 13, 2011, 12:06 PM
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Sorry, can't help then. I've seen Electrifly brushed ESCs and I've seen Electrifly brushless ESCs but I've never seen one that claims to do both.

In fact I haven't seen ANY plane ESC that works with both brushed and brushless since Shulze stopped making theirs several years ago. There are some big expensive Novak car ESCs about but I know they need to be specifically programmed for each motor type.

Steve
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Old Mar 13, 2011, 01:21 PM
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United States, CA, Bear Valley Springs
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Howell:

Exactly which esc do you have and exactly what does the manual say (quote the manual) about the ability to go either brushed or brushless?

I haven't heard of such and animal either.

mw
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Old Mar 13, 2011, 03:24 PM
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Beaumont tx
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OOOKAY. I am flat wrong. The ad copy said it was for both, and it uses "all" types of batteries.

I DO have a brushed ESC, os i can still use my old Astro 035 on a Feather Merchant.

howell
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