3D Printed Mini-Quad

bbodnyk

bbodnyk

Active Member
My K6 mini-quad with a 3d printed frame printed on a Mark One 3d printer which prints using nylon. The printer also allows fiber to be laid down into the layers for added strength. In this case I've added carbon fiber to the frame. The total weight of the frame and receiver cover is about 7.5g.

I'm using a receiver, motors and LEDs from a Hubsan X4 which allows me to use my Hubsan transmitter. My original Hubsan X4 107c frame is 12.5g and the camera module in the Hubsan is about 3.5g. Flying without the camera unit with the stock 380mAh battery that came with the Hubsan, I am routinely getting 6 1/2 to 7 minutes of flight time. Despite the advertising, I never got much more than 5 1/2 minutes of flight with my X4 107c. With a 500mAh battery without the camera unit I am seeing flight time of over 8 minutes.

I've designed the mini-quad so it can be flown without a camera or with the stock camera (6.9g) that came with the Hubsan 107c or with my Spektrum va1100 fpv camera(6.89g).

The carbon fiber frame has survived numerous crashes and I'm convinced it will never break.

Bruce

k6_frame.jpg k6_fpv_2.jpg
 
katheiser

katheiser

Invading your airspace, Colorado, USA
That is awesome! I started with a hubsan. Love it. As for the not being able to break it, You are more than welcome to send it to me, I bet I can!
 
bbodnyk

bbodnyk

Active Member
Thanks!

What I said was the frame won't break, I've broken numerous propellers, had my battery fly off and have had several severe enough crashes where the motor wire broke but not the frame. Probably the worst crash was running into the side of a brick building 20ft up and then falling to concrete. Surprisingly nothing broke on that one, not even the propellers.

Likewise, I think the Hubsan is extremely sturdy and am glad I choose it for my first quad. Unfortunately I cannibalized it for parts but that's ok, my K6 is much more fun to fly. It's lighter so it doesn't strain the motors and battery as much. I increased the spacing of the motors to 110mm diagonally which makes it a bit more stable and designed it so the center of gravity is fairly high which makes it very agile. Lastly, much of the motor is exposed which aids in heat dissipation.

When flying my original Hubsan outside I generally found the motors and battery would be quite warm, even hot at times. With a lower weight and exposed motors on my K6, most of the time the motors and battery are barely warm. I've come to the conclusion the biggest cause of motor failure on these tiny motors is overheating. I won't even fly it if the temp is above 90.
 
katheiser

katheiser

Invading your airspace, Colorado, USA
Sounds like a lot of fun! I've smashed my H107D into so many things at various heights, and its still going. I bought a ton of props on e bay I think, like 20 for $10 or something ridiculous like that. Best decision ever. I still haven't used all of them. I was more shamelessly hoping I could get my hands on a custom frame...
 
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