Comment by Squalish on March 30, 2011 at 10:48am

Three items:

*A streamlined foam aeroshell for the 1cm tubing could hold wires, and be rubber-banded closed.  Square tubing is really not aerodynamic, and is probably a significant efficiency loss from prop wash turbulence.  I do agree that thick, thin-walled tubing is the way to go for rigidity - tensile strength is already overkill.

 

*Would it be feasible to make a hashcopter with every other motor turned downwards?  It would change how the prop wash interactions occur over a coaxial arrangement(for the better?), and allow for bigger props.

 

*I understand that you're on snow right now, but flexible landing gear really helps on hard surfaces - the 'Flexlander' ones we're using from Mikrokopter store two or three feet of freefall energy, and bounce that far back after a hard landing.  They're hard to break, and not very heavy.

Comment by Markus Jahn on March 30, 2011 at 11:27am

@I.S.

I fly my batteries to 3.7V-3.8V per cell. I have 1000Watts of motors which propably take about 600W-700W when flying. I have always thought that that can temporarily lower the voltage quite much with empty Lipo. I just bought low voltage buzzer so I will hear if voltage goes below 3.3V.

 

@Squalish

I have also wondered why nobody has built EPP or EPO quadcopter. It would be lighter than aluminium and stronger than the plywood frames.

It seems you don't wan't props overlapping each other. I was told it makes copter terribly unstable. What it causes to half the props in different level would be interesting to try. I think it wouldn't have any remarkable effect because I already have such big gaps between props.

Please don't say anything good about MKs Flexlanders. Been there broken those. My current legs can withstand dropping from at least twice the height than those crappy plastic landing gears. I actually wanted them to not flex much so they take the hit instead of the camera hitting the ground first on crash. By the way I can make 40 new legs for my copter with the price of one Flexlander XL.

Developer Comment by Adam Rivera on June 29, 2011 at 7:26am

Does anyone know if the Ardupirates Oktocopter code will support 8 independent motor channels?

Developer Comment by Adam Rivera on June 29, 2011 at 7:33am

Is it really a disadvantage to run 4 channels with y-harnesses?

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