Brush vs Brushless - RC Groups
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Oct 13, 2010, 11:44 PM
Registered User

Brush vs Brushless

I'm not supposed to use RC in my project.
So i am just buying a Brushless motor.
But can a brushless motor work without esc?? (if yes how)
also can an esc work without without remote control?? (if yes how)

also i am being suggested to switch over to brush motor. what will be the speed difference i will observe ? (with any high end brush motor with cost under a brushless motor)

please reply fast. i need to complete my project soon and will have to order the motor via shipping
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Oct 14, 2010, 12:38 AM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
You must use an ESC to run a brush-less motor,
you can buy a servo tester that will replace the Remote Control to drive the ESC.

Impossible to answer second paragraph there are too many variables in motors, without further information, Ie voltage, prop size size of boat etc

Oct 14, 2010, 05:25 AM
Registered User
I was buying
Prop ->
Motor ->
ESC ->

But ESC being costly, i am thinking to switch over. so please suggest if a brushed motor could deliver a similar performance

and by the way i do not need to tutn my boat, it just has to go straight in a poool. so what should i do so that there should be no control for ESC
Oct 14, 2010, 07:05 AM
Registered User
CornelP's Avatar
Go for a good quality brushed and power it directly from the battery, it's a lot easier. The prop you linked is very big, will be ok for a boat 25" or higher. For your 12" you should go for
Look for a motor in the 380 size area (diameters around 28-32mm), with direct drive to the prop.
Oct 14, 2010, 07:56 AM
Registered User
wparsons's Avatar
^^ 28mm in a 12" boat with no RC equipment (weight) will be pretty ballistic!

TechXpert, since running a brushless motor will require more weight in equipment (finding a small enough servo tester will be hard too), you'll likely get better performance from a brushed motor in your scenario. In an RC boat that already has to lug around a receiver and ESC the brushless is better, but you don't have that weight burden in yours.

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