Comment by Imko van Beckhoven on January 26, 2012 at 4:24am

I am finishing almoust identical setup, may i ask what the reason for the BEC is?

Developer Comment by Jean-Louis Naudin on January 26, 2012 at 11:19pm

I have used an uBEC (5v) to power the APM so to get a separate source of voltage from the ESC for safety reasons. S,o I am able to tune quietly the APM with the ESC and the motor unpowered. I have also added a 4700µF / 16V  capacitor at one output of the 2.4Ghz Turnigy 9x8C receiver to prevent an eventual fatal reset of it during the flight.

Comment by Ruben Wijnhoven on January 28, 2012 at 3:42am

Jean louis,

Do you have the leaning issue?

Developer Comment by Jean-Louis Naudin on January 28, 2012 at 4:11am

The original and released ArduCopter v2.2 B4 firmware can be downloaded in the official ArduCopter page at:

http://code.google.com/p/arducopter/downloads/list

 

Comment by Ruben Wijnhoven on January 28, 2012 at 4:33pm

But does it lean or not?

Comment by Khurram on February 10, 2012 at 9:45am

What is its Payload capacity?

Developer Comment by Jean-Louis Naudin on February 10, 2012 at 10:35am

It is able to carry about 200g of payload without problem... May be more...

Comment by Khurram on February 10, 2012 at 10:42am

Can u pls suggest some prop+motor combination if i need 800g payload?

Developer Comment by Jean-Louis Naudin on February 10, 2012 at 10:58am

Here a rough calculation:

Take the TOW (Take Of Weight in Kg) including the payload, for a quadcopter, the Total Power Requirement (TPR) is:

TPR = TOW * 800 Watts/kg , so, for a quad,  this give for each motor,

the Motor Power Requirement : MPR = TPR / 4

i;e. for a quadcopter of 1 Kg (payload included), the TOW = 1 this gives a MPR = 1 * 800 / 4 = 200 Watts

You need to use a low Kv brushless motor (about 550 to 700 Kv) with a big diameter propeller (i.e. 12 x 4.5) ..

I hope that I have answered to your question...

 

Comment by Prasant on March 15, 2012 at 8:16am

hey brother can u tell me what is the max speed of ur motor after u added ur own battery to ur quad???????????

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