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HLMAX

YCOPTER

by HLMAX Sep 12, 2013
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Hello,

Can you build me a thing to my hexa copter rotorbits , in fact i yould like to have only one thing 45° see the picture :

https://www.dropbox.com/s/efy9qr8ze6h3xcr/print_3d.jpg?dl=0

My email : bats33@gmail.com

Thanks

In the instructions, you say to use "10cmX10cm basswood booms". Should that be 10mm x 10mm basswood booms?

Out of curiosity: what props are you using, and what flight times are you getting with Zippy 2200mAh 3s lipos?

Would you consider sharing the source CAD files? I'm thinking of making a few minor changes (e.g. allow the use of 1/2" wooden booms).

This is a great, well-thought out design HLMAX. Originally I was going to go with a http://RCExplorer.seRCExplorer.se 2.5 setup, but like yours much better, as it requires a lot less hacking. If you don't mind, I'd like to ask a few questions:

  1. Do you load the battery from the back or from the front, and do you secure via velcro and/or a strap?
  2. I'm using slightly longer booms since I'll be flying FPV eventually, and from what I understand, longer booms can lead to better stability and a more tame tricopter. I'll let you know how it works out, but is there an intended CG point with this design?

Thanks.

Yes, you do load the battery from the back, and just use Velcro straps to hold it in place. Also, in the photos, you can see that I use some soft grip tape on the top of the battery tray to hold the battery more securely.

The YCopter is relatively large, 578mm (22-3/4") DIA. I was tempted to make the arm even shorter. I have no problems with stability as it is. The CG is locate at the intersection of the three booms. I placed a hole on the top and bottom to mark the exact point of CG. The flight controller should be place on top of this point. You can shift the battery forward and backwards on the tray to balance the YCopter to the CG point.

I like the design, particularly the yaw setup. Pushrods should work instead of fishing line, though, right?

Push rods will work. It was originally intended for push rods; however, the fishing line/string was more common and less expensive.

I really like this design,. would it be difficult to create a version with 12mm / 1/2" booms?

Thanks.
Most of the parts will have to be changed for 12mm / 1/2" booms.
I might do one down the road for a set of 1/2" aluminum booms that I have; but that will be after a couple of projects that I am working on. ;-)

HLMAX I like your design specially the dampening system. It seems solid, I guess LiPo add a lot of mass to the camera attenuating vibration (waves amplitude) a lot. I would like to see an on board footage video (without soft stabilization) to see it in action. Do you have one?

Thank you.

Hi alejamp. Here is the link to a 1min clip of a test video I took after work, just as the sun is about to set. The light is a bit harsh. http://www.youtube.com/watch?v=Pzli7JF_A9shttp://www.youtube.com/watch?v...
The video is very stable, just a hint of shake at certain rpm.
The beauty of 3D printing is that you can change the dimensions of the dampener to your needs. Make it thinner, thicker, wider, or change its shape. I am happy with its performance as it is. I am using a Zippy 2200mah, 3s Lipo for the test.