Benjamin Rowland
Member
So I got the itch to try a coaxial today, but my motors are too fat to do the traditional stack with the motor-mount plates I have at the moment, so I tried offsetting them instead.
Here is a picture of before:
View attachment 10702
Here is a picture of what I mean by offsetting the motors (inspired by another forum user):
View attachment 10703
Here's what it ended up looking like:
View attachment 10704
So basically I ended up with a Cinestar X8. But the top motors are inboard and the bottom motors are outboard (hope that makes sense). I only got to run two flights, but they were long ones, and I got so-so results. I'm using a Hoverfly Pro, which flies awesome in my typical flat 8 layout (almost 1600 flights). Initially I had to reduce the gain by a fair amount to get it flying decent. It started to fly decent, but not as good as what I'm use to.
Here's the main issue I ran into - it would yaw a bit here and there. That gave it a floaty feeling, not as locked in as I'm use to. The yawing would drive my camera op nuts. I've got a few theories as to why it is yawing a bit:
So why did I even try this? To do a bit of experimentation. Also, I wanted to try a coaxial. And last, I've been wanting to put bigger props on without having to buy longer booms. I'm the type that either works with what I have, or ponies up the cash for the best - there's no in between. So it looks like I may need to invest in longer booms. I'll follow up with further results tomorrow, but I don't think I'll be sticking with this setup. But I'm glad I gave it a shot!
Let me know what you folks think...
Here is a picture of before:
View attachment 10702
Here is a picture of what I mean by offsetting the motors (inspired by another forum user):
View attachment 10703
Here's what it ended up looking like:
View attachment 10704
So basically I ended up with a Cinestar X8. But the top motors are inboard and the bottom motors are outboard (hope that makes sense). I only got to run two flights, but they were long ones, and I got so-so results. I'm using a Hoverfly Pro, which flies awesome in my typical flat 8 layout (almost 1600 flights). Initially I had to reduce the gain by a fair amount to get it flying decent. It started to fly decent, but not as good as what I'm use to.
Here's the main issue I ran into - it would yaw a bit here and there. That gave it a floaty feeling, not as locked in as I'm use to. The yawing would drive my camera op nuts. I've got a few theories as to why it is yawing a bit:
- One motor isn't totally lined up correctly. I had to eyeball it all. There might be one that's off.
- All the top motors spin clockwise on the top and it is reversed for the bottom. Having one set of motors closer in to the center could be causing some funkiness.
So why did I even try this? To do a bit of experimentation. Also, I wanted to try a coaxial. And last, I've been wanting to put bigger props on without having to buy longer booms. I'm the type that either works with what I have, or ponies up the cash for the best - there's no in between. So it looks like I may need to invest in longer booms. I'll follow up with further results tomorrow, but I don't think I'll be sticking with this setup. But I'm glad I gave it a shot!
Let me know what you folks think...