5 replies to this topic

[kevinv033]

While gathering my components to configure a Hexa Y6, I have decided that rather than having higher pitch props on the lower coax motors, I would like to just have those motors spin at a higher rate than the upper set. I am thinking that this will be the custom mix.

What I have done here is created a curve that is lower ( eyeballed at 15-20% ) and mapped that to the upper motors, while the lower motors will have the higher throttle curve.

Is there a better way of doing this in CC?? Would my assumption on this be correct? This makes more sense to me than having different prop pitches since we can fine tune the throttle curves to fit our needs, not just put a higher pitch prop below just because it needs to push air that is already moving.

[Mat Wellington]

thats looks  fine, and a great solution

or to make sure its a linear relationship, and so you only have one curve to adjust, have all motors on curve 1 the 127 figure under each motor in "curve 1" could just be tweaked, IE make the three top motors = 110 and the bottom three = 127

[Breezemont]

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Edited by Breezemont, 01 April 2012 - 02:50 AM.

[elmuchacho]

This is common practice with contra rotating prop the front/top prop has a lower pitch then the back/bottom proppeller. I've also tried a smaller prop at the front/top and a bigger at the back/bottom that work well on plane but I havn't tried on multi but saw a forum post once of someone that did that on a Y6 bigger prop at the bottom then the top.

Note: Higher pitch prop generate dynamic trust lower pitch prop generate static thrust. Dynamic trust allow you to increase the speed of a fast moving object.

[kevinv033]

Mat Wellington, on 22 February 2012 - 04:42 AM, said:

thats looks  fine, and a great solution

or to make sure its a linear relationship, and so you only have one curve to adjust, have all motors on curve 1 the 127 figure under each motor in "curve 1" could just be tweaked, IE make the three top motors = 110 and the bottom three = 127

Mat, thanks for that suggestion. I didn't think of that. I guess a custom curve would be good if you'd want a different response at a given throttle pulse. I'll save that for another day.

elmuchacho, on 22 February 2012 - 05:00 PM, said:

This is common practice with contra rotating prop the front/top prop has a lower pitch then the back/bottom proppeller. I've also tried a smaller prop at the front/top and a bigger at the back/bottom that work well on plane but I havn't tried on multi but saw a forum post once of someone that did that on a Y6 bigger prop at the bottom then the top.

Note: Higher pitch prop generate dynamic trust lower pitch prop generate static thrust. Dynamic trust allow you to increase the speed of a fast moving object.

I was thinking of a way that I could just use the same pitch at all times just to keep the stock levels of my spare props simple. I guess having the differing pitch props is a better solution since you will be able to use all of the available power of each motor, but changing the mix makes it easier to stock spares for me.

[kevinv033]

Here's the custom mix I am starting with for my Y6.