I see arducopter has two possible tri-copter options; which is best? And what does it mean when the second option "doesnt need a code change"?
It's for a small 300mm foldable - the HK trifecta to be specific.
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Euan, why don' t you try both and let us know ?
IMHO the one with opposite prop will have a bit less torque.
Let us know
I prefer the arrangement with the two opposing props. There will be less torque the tail rotor needs to compensate for. And if you are using an RCExplorer type servo/motor hinge, they often have limited travel before they hit their stops. I'd rather not use this limited travel to have to compensate for torque I can eliminate by using counter rotating props.
This is the one I've gone for.
There's something faintly disturbing about a multirotor that has all its props turning the same way...:-)
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 that you hit the stops on one side faster than the other, allowing a slightly faster yaw in one direction. You can over come this by playing with position of the tail servo.
I have to say though, the opposite rotating props on the front and straighter tail servo (in hover) just look cooler.
I usually start like this, until I run out of CCW props, then I just use all CW and twist the tail servo a bit with my hand.
And nothing flies quite like a tricopter :)
If you go to the official page, and look at the motor layouts, you can see there are two tricopter iterations.
http://copter.ardupilot.com/wiki/motor-setup/
The one just uses an opposite direction prop, either works fine as the tail rotor will offset the torque.
Euan,
Where are you taking the quote from? I'm only aware of one "Tri-Copter" configuration. There are two Y6 variations "A" and "B". But from reading some of your other posts it seems clear you are already aware of that.
Regards,
Nathnaiel ~KD2DEY
Nobody knows?
Kinda need to know now - mainly because on power on, my tilt servo centres, but does nothing when you boot it all up. Swapped it with motor4, and the servo responds correctly.
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