"Hi Euan, I have flown both configurations, both fly well. When using all the same direction props the tails servo just sits off to one side a touch in hover, and forward flight, to counter the torque and if your servo travel is limited you may find…"

"I gotta disagree here, that last thing that bullet connecters need is loosening, I solder all mine, if i use them at all.

Love the fuse idea, and pleased you didn't suffer more than props and a motor!

Gonna keep reading before i pass comment on…"

"Hi Guillaume,

That link was from me, i had the copter under control from 4 sonars at once- one out of the front, one out of each side and one below. It wasn't finished but had started to work quite well.

It involved writing it bit of custom code,…"

"The 'p' props are pusher props. They should go on motors 3 and 4, and should spin clockwise. The non 'p' props are just standard direction props, the should be on motors 1 and 2 and should spin anti-clockwise.

Check…"

"Nope I think it's a great idea, let us know how you get on! "

"Yes it's definitely possible, the mini quads, including the walkera ladybird and hubsan x4, both have single boards, with on board 'esc chips', and the whole board is cheap to replace.

I think the reason that larger quads tend to have separate…"

"If you could post a picture of your setup, and possibly a video of of an attempted take off I might be able to isolate the problem for you"

"He's a brief explanation Euan

http://planner.ardupilot.com/wiki/swarming/"

"I do it with one of these http://www.l-com.com/usb-right-angle-usb-cables-straight-a-male-to-...,  or at least one that looks just like them, it came from an old docking station.

There is just enough clearance not to stress the USB connector on the…"

"Hi John, 

I have a lot of info for you, and I'm based in the UK, I've sent you a message!"