twin rotor helicopter

[jeroenieman1]

nice i gonna build it really cool

[stuka1966]

Good try.



[michel6104]

qual e q issu

[edgarduranforeal]

make a tutorial

[GerbilEssences]

'Genius'

[Obzy09]

nice did you use aerodynamics?

[tikifish28]

wow nice that is very interesting, just a few questions how did you get the blades to spin in different directions, did you use gears or two rubber bands, if you could maybe send a plan on how you built it that would be great, 5 stars by the way.