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Old Oct 13, 2010, 10:44 PM
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Joined Oct 2010
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Help!
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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Old Oct 13, 2010, 11:38 PM
NeverAgainVolunteerYourse lf
nick_75au's Avatar
Australia, QLD, Regents Park
Joined Mar 2007
3,628 Posts
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

Nick
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Old Oct 14, 2010, 04:25 AM
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Joined Oct 2010
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I was buying
Prop -> http://rcforall.co.in/product_info.p...roducts_id/414
Motor -> http://rcforall.co.in/product_info.p...roducts_id/154
ESC -> http://rcforall.co.in/product_info.p...roducts_id/293

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
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Old Oct 14, 2010, 06:05 AM
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Bucharest, RO
Joined May 2009
1,989 Posts
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
http://rcforall.co.in/product_info.p...roducts_id/402
Look for a motor in the 380 size area (diameters around 28-32mm), with direct drive to the prop.
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Old Oct 14, 2010, 06:56 AM
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Canada, ON, Markham
Joined Aug 2008
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^^ 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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