Arducopter HEX with round arm replacement

After reading another conversation here about adding round tube arms to an Arducopter, it got me thinking: first, can I non-destructively accomplish this, and second what would be the impact to its weight and flight abilities.

I began by finding some round arms and mounts that might work, and went with a set from a Talon HEX.  I got the arms, the arm mounts, the motor mounts, and the all of the necessary hardware.  An added bonus, or perhaps a problem, is that these arms are longer than the square tube arms that came with the Arducopter kit.

Getting the arms to mount to the existing frame wasn't as hard as I thought it would be, while keeping the frame intact enough that I could revert the square arms if I wanted/needed to.

I am now in the stages of trying to get all of the ESC wires and the PDB settled into the center.  One thing I did not take into account is that I lost a little bit of lip room under the top mounting place due to the arm mount.  I am going to need to work the PDB in there very carefully.

I will post more pics once I get the power system in, and then hopefully some info about how it flies once I get it back into the air.

Views: 626

Tags: arducopter, arms, carbon, fiber, hex, mounts, retrofit, talon

Comment by Ilya R. on July 19, 2013 at 4:20pm

Nice! Out of curiosity, how much do the metal brackets weigh, and what is the diameter of the tubes?

Comment by Sean Tierney on July 19, 2013 at 5:23pm

Ilya R. the tubes are ~14mm (9/16") outer diameter...as for the weight of the arm mounts, I am not sure but I will have to dig out a kitchen scale later.

Comment by Ilya R. on July 19, 2013 at 5:44pm

Nice... that's right about the diameter I use in my drone. Does hobbyking sell just the mounts, or did you have to buy the whole kit to get the mounts?

Comment by Sean Tierney on July 19, 2013 at 5:59pm

I had bought just the arms and mounts.  I just looked at the HobbyKIng site and they are no longer carrying spare parts for the Talon HEX it looks like...not eve the arms.  I think that the Talon Quad and HEX use the same mounts though.

Comment by Sean Tierney on July 19, 2013 at 7:11pm

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