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August 18, 2009, 04:40:13 PM
PankajC
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Love balsa + nitro, but seem to be switching to EP



a noob question....

Is the motor always on? I mean I see some switches for the receiver, but the motor is always connected to the ESC and the battery - straight. So does it mean that the prop always turns?

Pankaj
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August 19, 2009, 09:00:08 AM
merog
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is this the power setup you are using ??
http://www.gwsus.com/english/product/powersystem/edp50.htm
then it can produce only 60grams of thrust at 7.2volts with a EP3020 prop
in the video did you give full power at the end ?? if so then.....lets see what other could say
sahil


Dear Sahil,

Thank you very much for your thought! Unlike in the link you have browsed, the power system I have used a tailor made, which I have composed.

The same motor and prop but the ESC supplies 10amps, and the battery is 11.1v 3S 15C, so the thrust will be 280g approx. You can calculate and check!

And regarding the fuse, you are right, it should be reinforced with tape. Agreed Wink
« Last Edit: August 19, 2009, 10:16:50 AM by anwar » Logged

 

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August 19, 2009, 09:47:35 AM
sahilkit
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Quote
regarding the fuse, you are right, it should be reinforced with tape. Agreed Wink
  Smiley Wink

BTW let us see who will finish there model 1st,after seeing your thread i just got my spark back  Smiley 

best

sahil
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August 19, 2009, 10:40:25 AM
RotorZone
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Dear Sahil,

Thank you very much for your thought! Unlike in the link you have browsed, the power system I have used a tailor made, which I have composed.

The same motor and prop but the ESC supplies 10amps, and the battery is 11.1v 3S 15C, so the thrust will be 280g approx. You can calculate and check!


I'm as skeptical as Sahil. If you are getting 280g thrust out of that, my prediction is that you'll burn out the motor pretty soon. I don't even see a heatsink on the motor. Would be interesting to know about your "composition" to get that much more thrust.

That motor is one of the most efficient brushed motors I have come across, more efficient than a lot of the brushless motors out there.
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August 19, 2009, 12:04:47 PM
merog
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a noob question....

Is the motor always on? I mean I see some switches for the receiver, but the motor is always connected to the ESC and the battery - straight. So does it mean that the prop always turns?

Pankaj

Pankaj,

Switches are just for ourselves, to ensure safety. If you check all the connections prior to every flight, good enough, no need to put a switch. Orelse, no need. In my case, I always keep the set up dosconnected from the batt. when not in use. So, no need of switches.

And regarding the motor activeness, as the ESC takes the power from the Batt and supplies to Receiver, and cut it off at ZERO throttle input all by itself, the motor is dead at aero throttle input! So, no spinning when your throttle leaver is completely down.

Regards...//MEROG
« Last Edit: August 19, 2009, 12:28:34 PM by anwar » Logged

 

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August 19, 2009, 12:09:15 PM
merog
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I'm as skeptical as Sahil. If you are getting 280g thrust out of that, my prediction is that you'll burn out the motor pretty soon. I don't even see a heatsink on the motor. Would be interesting to know about your "composition" to get that much more thrust.

That motor is one of the most efficient brushed motors I have come across, more efficient than a lot of the brushless motors out there.

Guys,

I have taken some suggestions from Mr.GPW, who invented this design as 'Trainer One' and some other RC friends of US and NZ about the power system for this plane, prior to the start of the build.

So, let us see if it burns the system or not!

Let me fly with it and check it!

Thank you for your point...//MEROG

« Last Edit: August 19, 2009, 12:28:07 PM by anwar » Logged

 

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August 20, 2009, 11:40:39 AM
merog
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Guys,

Some serious RC guys warned me about the power system as some of us did. So, to ensure safety, I'm gonna change the LiPo... I'm gonna deploy 2S 7.2v 15C 650mAh. Wish me all the best!

Thank you...//MEROG
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August 20, 2009, 04:52:42 PM
RotorZone
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Good decision. The less serious RC guys are glad to help Smiley
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