weary stratus
I'm looking to put together a 3.5" grinderino drone build.
Frame: 3.5" FlyFishRC
Motors: T-motor F1404 3800kv , 3-4s Lipo
Battery: GNB 650mAh 850mAh 4S 120C
Flight Controller: SKYSTARS F7 HD Pro3 Flight controller and AM60A AM-32 32bit 4IN1 ESC fly tower stack
Video Transmitter: RUSH TANK VTX MINI
Receiver: Radiomaster XR1 Nano Multi-Frequency ELRS Receiver - Dual-Band 2.4GHz 900Mhz
Camera: Caddx Ratel 2
Video Transmitter Antenna: Singularity 1.2Ghz 1.3Ghz
Any advice is appreciated!
3.5" Drone Shopping Advice
I was previously warned against getting a no name FC, so I think this one from Skystars seems more trustworthy
I was recommended to get F1604 motors, but the closest I could find was F1404, I think this will still be fine??? does 2 mm in stator diameter make that much of a difference?
meager ridge
how big is that stack? looks 30x30 which you don't want
the motors might be a bit weak but it should fly fine
you don't need a dual-band receiver probably
that antenna is for 1.3ghz, get a foxeer lolipop or rush cherry or truerc core or singularity
livid crow
also for that frame i think 1804s are recommended, its pretty heavy so 1404s might not be powerful enough. i feel like you should at least get 1604s if not 1804s
also pretty sure the stack uses xt-30 not xt-60
and don’t get the frame with the o4 mounting if you wanna do a rattel cam, get the normal frame
also do u really need a dual band receiver? like can your radio even do 900 MHz
bright lava
should it be sub-250
visual tangle
also for that frame i think 1804s are recommended, its pretty heavy so 1404s mig...
1804s are almost too big(I fly them myself)
1604 is fine
visual tangle
Why are you using emax as reference
river jackal
it works on that drone 🙂
you can make a 7" with 1404s if you wanted to
would probably fly as well as a babyhawk aswell
mild bear
hm i was under the impression that the babyhawk flew well
some good freestyle clips there
hot osprey
some people do use 1404 on lighter 3.5"
feral ibex
I'm looking to put together a 3.5" grinderino drone build.
Frame: 3.5" FlyFishRC...
One thing, if you gonna order batterirs on aliexpress theh might take months
Check local stores for example for me they were about the same price and I got them next day
livid crow
hm i was under the impression that the babyhawk flew well
it does not
that person was probably sent it for free for review
you can see they have an affilate link. also they're saying it flys for 20 min which it just objectivley doesn't
also not particularly comparable since that frame is WAY lighter than the voaldor he's planning on using
weary stratus
Check local stores for example for me they were about the same price and I got t...
batteries are always the longest lead time, but I haven't found any good stores in Ontario Canada for lipo batteries 😢
weary stratus
how big is that stack? looks 30x30 which you don't want
I'm not familiar with flight stack measurements, is this the width and length in mm?
what size should I be looking for in a 3.5" drone?
weary stratus
also for that frame i think 1804s are recommended, its pretty heavy so 1404s mig...
does the kv rating of the motor matter more or the dimensions like 1804/1604 matter more?
^^ im thinking of using these motors instead then
weary stratus
and don’t get the frame with the o4 mounting if you wanna do a rattel cam, get t...
so O4 in the title means it has a special kind of camera mount? not using m2 screws?
weary stratus
also do u really need a dual band receiver? like can your radio even do 900 MHz
what does dual band receiver mean? are non-dual band receivers cheaper?
livid crow
so O4 in the title means it has a special kind of camera mount? not using m2 scr...
it just means it's a special type of mount, the volador comes with an option for that
weary stratus
oh okay
livid crow
does the kv rating of the motor matter more or the dimensions like 1804/1604 mat...
they both matter, you can look up the equation for it but it involves the stator volume and the KV
1604s at 3450 kV would be good on 4s
livid crow
lol that's EXACTLY what i was about to send
livid crow
yea, so get 4 or 5
livid crow
does the kv rating of the motor matter more or the dimensions like 1804/1604 mat...
cheaper than these
weary stratus
Im gunna have a mismatched drone of 4 wildly different motors
weary stratus
weary stratus
ali express
weary stratus
Canada
livid crow
oh there're better shops, lemme find u on
weary stratus
where do you get them>?
livid crow
1349519213026611306
weary stratus
Im new, I dont know where to look yet
livid crow
oops
livid crow
#1349519213026611306
it's not working
go to faq and to comprehensive list of fpv retailers
weary stratus
okay
livid crow
there
weary stratus
oooo
livid crow
and shipping will be WAY faster since it's domestic
meager ridge
I'm not familiar with flight stack measurements, is this the width and length in...
It’s the measurement of the mounting hole pattern
weary stratus
this is a game changer
weary stratus
It’s the measurement of the mounting hole pattern
ooooh, so it describes the screws
livid crow
distance between them
weary stratus
ah okay
livid crow
just get a 20x20 stack and you'll be fine with that frame if i remember correctly
weary stratus
ill give that a shot
livid crow
it should also say in the description of the frame
weary stratus
just get a 20x20 stack and you'll be fine with that frame if i remember correctl...
I see some 25.5 by 25.5, but 20 x 20 seems a little scarce. some of them dont mention any and just say F7 V3 or F722, if it doesnt mention any measurements is it safe to assume its 30x30?
livid crow
I see some 25.5 by 25.5, but 20 x 20 seems a little scarce. some of them dont me...
wait im stupid it can do 25.5
weary stratus
oh nice!
I'm probably going to rechoose a whole bunch of parts based on domestic suppliers then
is there a spec in a drone frame that says what the spacing between the screw holes are?
or is it trial and error to know what size FC fits with what frame size?
meager ridge
The description of the frame will say
hot osprey
oooo
just heads up that rotorev is shutting down slowly so it would be good to order soon for those from them
that's a good deal on them for sure though
slate aspen
i assume you already moved to 1604/away from 1404 but i build a 1404 3 inch and its a tad bit underpowered
if i had built with a lighter frame/toothpick it would have been perfect
livid crow
i assume you already moved to 1604/away from 1404 but i build a 1404 3 inch and ...
this is also a heavy 3.5 inch frame so....
slate aspen
yea
visual tangle
this is also a heavy 3.5 inch frame so....
It’s not super heavy
Lighter then the volador
mild bear
makes sense that 1404s arent enough for heavier builds
btw, babyhawk 2 does fly 20 minutes with lion pack
bright lava
for 3.5 you should get 1804 not 1604 thats for 3inch quads
visual tangle
for 3.5 you should get 1804 not 1604 thats for 3inch quads
No not really?
They are heavy and don’t offer any benefit over 1604s for lightweight builds
slate aspen
https://darwinfpv.com/products/darwinfpv-1504-motor?variant=42147238707375
some of the shittest motors out there 💀
everything darwinfpv is crap
