I made suspected multi-head mod today.
But not finished yet,not good flight feeling.
She flies just as coax-heli.
I must adjust more and more.

Just as coax-heli,flight feel is same as coax,too.

Must eat batteries pretty fast turning two sets of blades.

I think the tail motor has to work doubly hard to counteract the two sets of blades. Nice proof of concept.

I improved upper head today.
I set up a lever,just as normal bell-head.
She became better than before.

I improved upper head again today.
She can fly better than yesterday.
See her video.
http://v.youku.com/v_show/id_XNDU3MzA1NzI4.html

I improved upper head again and again today.
I connected the bell lever of upper blade to swash-plate.
She can fly better than before,like normal V911.

Upper and Lower blades be controlled by swash-plate.
Is this real 4-blades?

Bravo, KKDDMM! Is the control response even quicker than normal?

Originally Posted by stonecutter

Bravo, KKDDMM! Is the control response even quicker than normal?

Thanks!
The response is almost same as normal.
There is little sense of incongruity.