Pusha Q
By SlightlyScratchedCorolla on Aug 15, 2020
This 3" frame has been sitting in idle forever because I gutted the Cinequeen for parts. I was hoping I could get my hands on the umma95 kit but it seems to be never in stock in the US. So I'm converting the Cinequeen frame into a bottom mount pusher.
The wide space between the prop guards would allow me to bottom mount the battery, which will stay at the center of the mass while lifting the props away from the ground. This is pretty close to "mid-mount" battery. And if you flip this quad, you bascially get a small top mounted Remix with prop guards, that's where I get the idea of bottom mounting this baby.
I'd love to put on bigger motors but this frame limits me to 9x9 patterns. I chose 1404 over 1206 because of a little more low end torque and props being able to position a little higher (upside down motors).
The build was fairly straight forward. Make sure the motors are spinning in the right direction and install the props like usual (inverted to motors here).
281g take off weight with a 850mah 4s.
Bonus point is usb ports are hella accesible.
Photos
Part List
Frame |
GEP-CQ Frame - GEPRC
(3 builds)
Geprc.com
|
$37.99 |
Flight Controller |
20x20 Mini Drone Stacks/Combos for - RaceDayQuads
(25 builds)
Racedayquads.com
|
$89.99 |
Motors |
4 x EMAX ECO 1404 3700Kv Micro Motor
(13 builds)
Racedayquads.com
|
$51.96 |
Propellers |
HQ 3030 3-Blade Propellers
(3 builds)
Betafpv.com
|
$2.50 |
FPV Camera |
Caddx Vista Digital HD VTX Air Unit Kit for DJI - Choose Your Cable Length
(209 builds)
Racedayquads.com
|
$165.00 |
Receiver |
FrSky R-XSR 2.4GHz Micro ReceiverDefault Title
(937 builds)
Racedayquads.com
|
$21.99 |
not sure how it flys, but its super cool . i like the creativity
https://streamable.com/e76rm1
my most recent test flight dvr. You can tell I'm a limited pilot but the quad has very little prop wash coming out of acro moves.
This is one of my favorite frames.
Just realized I can approximate this with mine with a few software settings since the props are 3D style. I'd be most curious to see how it impacts battery life.
3D style on this setup would be wild. I'd get rid of the prop guards all together for that lol I guess otherwise the thrust difference when you invert the spinning would be huge.
I've never configured a 3D motor/prop I can't speak for the battery life. But this particular pusher configuration of mine doesn't seem to increase flight time, it just gives a little better handling. I'm using fairly high pitch props though, I'm gonna put on some less aggressive props and see if that increases efficiency.
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does having the motors inverted help performance at all?
I'd need to fly it more to properly answer you. My first impression is its not as steady as the regular configuration (all with prop guards) but faster and punchier, but I have barely tuned this quad so it's not definitive. Also half the reason I did it is that the wide clearance on this frame allows me to bottom mount, and the battery would be at the level of motors/props. You know what people used to say it'll be good to "mid-mount" battery, this is my attempt to put the mass together.
It should (3-7% gain) but the effect is more noticeable with larger propellers.