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Ace Hobby . Esprit Model . Thunder Power RC

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e-Century Hummingbird - Swift > Brushless Motor Setup
 
 
MADGUNS
Senior Heliman
Location: RAF Mildenhall

Can someone please explain to me and a few of the other guys that are too scared to ask, why you cant use a brushless motor with the hummingboard mixer? I understand that a brushless motor has no brushes that contact an armature, that goes without saying. What I dont understand is if it can run off DC power then why cant you use a normal speed control with out going to seperates. I have looked high and low for a good "Brushed motor"...My orion just recently stopped producing useable power. I cant find new brushes for it. I thought about going with the Orion Core Modified {part number 20904 Core Micro Modified} motor because of the simple fact that it does have replacable brushes part number {41290 Replacement Brushes} . This looks to be a really good alternative. I wish that century would develope a fairly inexpesive mixer that works a brushless main rotor motor. I know a couple of people have seen the state of the art motors that are on the Joker helicopter. Hobby Lobby sells the same type of motor in a 280 size for around 95.00 bills. They claim that they produce so much torque that they can swing a propeller alone that a normal 280 needs a gearbox to spin. As we all know Torque is king for a helicopter wether it is fixed pitch or collective. Any help getting us smarter would be appreciated
07-23-2003 Over year old.
 
 
jeffs555
Senior Heliman
Location: North Carolina

The problem is that a brushless motor does not "run off DC power", it runs on 3-phase AC. The brushless controller converts the DC power from the battery into 3-phase AC, and that is why they are more expensive than brushed ESC's. Although I haven't tried it, you could probably use a brushless controller and motor and just use the hummingboard for the tail. You would need a servo y-connector, so that both the brushless controller and the hummingboard would get the signal from the throttle channel. It might work, but because of the increased power of the brushless, the mixing curves on the hummingboard might be off.

Jeff
07-23-2003 Over year old.
 
 
MADGUNS
Senior Heliman
Location: RAF Mildenhall

OK that makes sense
Now instead of hooking a brushless controller into the battery can you just plug it into the Hummingboard main rotor drop.This way it gets the proper voltage from the mixer to the brushless controler to the the Motor. I wonder if that would work??? Thanks for clearing that up.
07-23-2003 Over year old.
 
 
jeffs555
Senior Heliman
Location: North Carolina

No. The electronics on the brushless controller need a constant DC source, not the pulsed DC that comes out of the hummingboard.
07-23-2003 Over year old.
 
 
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Mikado Modellhubschrauber . GrandRC . CanoMod

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e-Century Hummingbird - Swift > Brushless Motor Setup
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