BEC?? Do I understand this correctly?
04-08-2003 | 11:49 PM
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From: AZ
BEC?? Do I understand this correctly?
Just want to make sure my understanding of BEC is correct.
The BEC eliminates the need for a separate rx battery by cutting off current to the motor when the main pack reaches a certain voltage right? Is this adjustable to 4.8v or 6.0v, or just one? Using this type setup would give shorter overall motor runs correct? Can anyone venture a guess as to how much? Is the system fool proof? Thanks for the help.
Bryon
The BEC eliminates the need for a separate rx battery by cutting off current to the motor when the main pack reaches a certain voltage right? Is this adjustable to 4.8v or 6.0v, or just one? Using this type setup would give shorter overall motor runs correct? Can anyone venture a guess as to how much? Is the system fool proof? Thanks for the help.
Bryon
04-09-2003 | 12:15 AM
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BEC
You seem to understand correctly. Most BEC's are not adjustable though. Nothing is foolproof but Rx batterys can fail also. I use BEC's whenever I can. Yes the motor run will be a little shorter but not necessarly the flight. Saving the weight of the Rx battery means less power required to fly the lighter plane.
04-09-2003 | 12:38 AM
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BEC?? Do I understand this correctly?
Bryon-
The power consumed by a receiver and servos is ~ 0.125 amps/hour. I only worry about consumption with my electric powered glider....if it's up for a looong time, I blip the throttle...if it spins the motor, I've got juice for the radio. For all other planes, if I've not enough juice to spin the motor (yes, when power reaches some arbitrary number, the motor will cut out, but you still have plenty of battery power left to glide in), then I set up for landing.
FWIW, the power consumed by the radio is typically margin when compared to the consumption of the motor; you really don't need to account for radio consumption when you desire to estimate running time.
What type of plane are you referring to?
Paul
The power consumed by a receiver and servos is ~ 0.125 amps/hour. I only worry about consumption with my electric powered glider....if it's up for a looong time, I blip the throttle...if it spins the motor, I've got juice for the radio. For all other planes, if I've not enough juice to spin the motor (yes, when power reaches some arbitrary number, the motor will cut out, but you still have plenty of battery power left to glide in), then I set up for landing.
FWIW, the power consumed by the radio is typically margin when compared to the consumption of the motor; you really don't need to account for radio consumption when you desire to estimate running time.
What type of plane are you referring to?
Paul
04-09-2003 | 03:58 AM
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BEC?? Do I understand this correctly?
Thanks guys,
The project is an Aquila that I need to electrify. No room for hi-start or winch. In the past I've been purely a glow motor guy so I'm learning lots about electrics. I'm still in search of the perfect drive train combo. Lots more questions in that arena. But, thanks for the replies on BEC.
Bryon
The project is an Aquila that I need to electrify. No room for hi-start or winch. In the past I've been purely a glow motor guy so I'm learning lots about electrics. I'm still in search of the perfect drive train combo. Lots more questions in that arena. But, thanks for the replies on BEC.
Bryon
