Posted by Jørgen Hoem on October 19, 2010 at 12:00pm
Hello,Today I got a 20x20mm square aluminum tube, and while I’m waiting for my ESC’s to arrive, I want to see if I can design and make an airframe for my quad instead of buying one from MikroKopter.The hardware I’m using, besides the obviously, is:- 12x3.8 Slow Flyer- Turnigy 2217 860kv 22A OutrunnerCan the attached design work? Is there a minimum space needed between the propellers when using as large as 12x3.8?I want my quad to be as compact as possible, but still sustainable.My experience with quadcopters and aerodynamic is quite low, so any feedback are welcome... :)
The ends will bend very easily if cut like that. You are better off leaving the bar intact. I have the exact motors and just drilled holes from the bottom of the square towel bars and mounted the motors directly from underneath without the mounts.
Just make sure to drill a clearance hole for the bearing and C clip on the bottom. You will also need to drill a clearance hole for the motor shaft as it will not quite clear the bottom of the bar.
No need to add weight or cut the bars.
I would also suggest letting the bars extend past the motors an inch or so to give them a little protection. The spinning orange part of the motor can pop loose from fixed part in a crash. They are just epoxied in and easily repaired.
Replies
Just make sure to drill a clearance hole for the bearing and C clip on the bottom. You will also need to drill a clearance hole for the motor shaft as it will not quite clear the bottom of the bar.
No need to add weight or cut the bars.
I would also suggest letting the bars extend past the motors an inch or so to give them a little protection. The spinning orange part of the motor can pop loose from fixed part in a crash. They are just epoxied in and easily repaired.