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Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!
WL_Production

SkyTrak - The Modular DIY UAV

by WL_Production Sep 24, 2015
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Great Job! Can you put settings (motor, propeller, battery...) And how many flight time?

This is great! I really like the design. One thing that I would suggest is to put the hinges of the back arms further out (and make the arms smaller of course) so that you can fold it better. Like the Alien 560 frame has.

Thanks for the comment.
I thought about that during the early design phase, but keeping the arm mounts close to the rails is a intentional decision.
Three reasons:
1- If I made one of the mounts wider, it would be bigger and therefore heavier. I would also have to make it ticker to compensate for the plastic's natural flexibility, further increasing the weight.
2- My design philosophy is to have as few distinct parts as possible. So having identical front and rear mounts was preferable.

The Alien 560 doesn't have those issues because it's mostly carbon fiber. Wider CF mount = shorter CF arms = no net weight gain. And CF is stiff.

Besides, as you can see from the picture, the arms fold just fine, as long as one of the sets of arms is shorter than the length of the core.

The SkyTrak is still a work in progress. Version 2 (that I'm calling SkyTrak Lite) has arm mounts that can be printed flat, in a way that makes the part stronger... It may be possible then to make an XL version of the mount that will extend further. I'll look into it.