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HELP Qav250 thrust problems...
#1
Hi guys in new to fpv flying and micro quads. Even though i manage to build the quad its seem powerless the build consists

frame qav250
esc 12a lumenier simonk
motors cobra 1960kv
props 5030 gemfan
naze acro
x8r for reciever 
fatshark 250mw fpv
battery 3s 1500mah nano tech 25-50c 

When im flying in straight line it flies fine when i turning hard or coming up from dive it looses elevation fast and even putting the throttle near 100% it just elevates so slow 
im starting yto believe either the fans are the prob or the low C battery. 
Any help will be appreciated it .
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#2
No wonder its powerless, you are using 3s on those motors ! Should go for 4s hehe, with 5045 props...

If you want a even more power setup on those motors, upgrade your esc to 20a, and put some 6045 or 6040 tribals on them Wink

If you want to stick with 3s lipo then just use 6045 props it should be a lot faster
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#3
Ok thanks Oscar i will try with 4s
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#4
hi
or try 6" props with arm extensions with your 3S lipo
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#5
(18-Feb-2016, 04:46 AM)lolo98800 Wrote: hi
or try 6" props with arm extensions with your 3S lipo


i just got some 5045 props and it seem its getting better than before Smile but not what i really want, now im waiting for the 4s to arrive and in the future probably i will buy the adapters too for more thrust.
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#6
I have a very similar setup on a ZMR250. Those cobras are really meant for 4S and bloom with 6" props. I'm using the 12A Lumenier as well, they should be a bit under-rated for 4S 6" but mine keep on working even on Gemfan 6045s. Just keep full throttle bursts in check. The 6" props will carry a bit of inertia tho which will reduce some maneuverability.
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