Long flight time drone build | Drone Community | Page 1

wind whale Jun 7, 2025, 3:19 AM

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title says it all really just need to decide on a frame size
10" amazing size big drone is cool BUT dont want to use 8S batteries
7"/5" no real thoughts but id prefer to not do 5" just to differentiate my drones by size
3.5"/2" would be really nice for cruising and casul flights but id be worried about wind

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the only realy requirement is the frame needs fit a caddx moonlight kit

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a tall frame where everything is stacked on top of each other i feel like would be cool and easy but considering how tall the moonlight is idk

true tundra Jun 7, 2025, 3:20 AM

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I run my 10” on 5S, 8S is not necessary

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If I didn’t have such oversized motors I would be using 4S

wind whale Jun 7, 2025, 3:23 AM

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yeah ill probably see about getting away with 4S to save on battery costs

wind whale Jun 7, 2025, 4:06 AM

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heres what we are looking at

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i have no clue if any of these are good

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motors are 1400kv

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could go lower if needed but idk how low i can go with only 4S

full vortex Jun 7, 2025, 4:28 AM

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For a 10in 2810 motors is IMO the minimum but 2816 is popular as well as 3115.

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Frame just get an EVO.
https://cncdrones.com/EVO-10_p_1133.html

Cncmadness

EVO 10-F161

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A 2207.5 is more a 5-6in motor or 7in at max

wind whale Jun 7, 2025, 6:36 AM

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full vortex For a 10in 2810 motors is IMO the minimum but 2816 is popular as well as 3115.

what do we think of this

Pyrodrone

RCINPOWER EX2809 Plus 800KV 4-6S Brushless Cinelifter MotorsDefault...

More affordable Rcinpower EX2809 Plus 800KV 4-6S Brushless Cinelifter Motors are available now. Also check out our other 28XX motors and all our RCINPOWER products! Specifications: KV: 800KV No. of Cells (Lipo): 4-6S Configuration: 12N14P Stator Diameter: 28mm Stator Length: 9mm Shaft Diameter: 4mm Idle Current(10V): 1

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i have no clue what kV to go for im just trying to give myself the best chances of powering everything with 4S

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speed doesnt matter either really as long as i can manage probably like 30 or 40mph ill be happy

full vortex Jun 7, 2025, 2:31 PM

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So for 10in usually 900KV or 1115 is what people run for freestyle or cruising on 6S
here is the math for 900KV
Putting the tip speed at around 0.88mach
Trying to go above 0.92 is usually just gonna create drag and kill prop effeciency.

To get the inital max RPM your motor can spin you:
motor KV *Battery max voltage = max speed your motor can spin no load.
take that and then punch it into prop tip speed calculator

https://hoverhawk.com/propeller-and-fan-tip-speed-calculator/