This thing is just awesome. And begs to be pimped out.
https://shop.iflight-rc.com/dc10-v2-10-i...rms-pro950

I use BH Avenger2 2812, HQ 9050*3 props (they shatter easily and expensive!), and Mamba F722 6S 60A stack.
2+ years ago, there were few options.

9"/10" is fun to fly, and looks terrifying at night, pimped out with LEDs. (need separate 5V reg to run >2Amps)
The sound.. the feeling.. Its awesome.


But.. why not 10"?

1. Props. Very few choices. I *REALLY* should order MasterScrew. The HQ have been a HUGE money pit. Avoid sharp banking near ground. Its basically like flying a 18wheeler. Plan ahead.

2. Sharp turns? no no. Vortex around trees? uh uh. Proximity flying around children's playground. Are you out of your mind? You need LOTS of space. Yes, you can do freestyle moves, but its more about the slow roll.


3. $$$ . Duhh. You can buy a 3" toothpick for price of frame alone. Shipping on batteries can be huge. Lack of battery options is a problem.



What would I do different in 2022?

1. DJI Air unit. "Fast" on 5" is 60kph, so 1km per min. 10" can cruise at 90kph+, and can handle wind well with steep props, so we definetly need long range video feed and GPS. But my old AKK analog.. video quality sucks. 

2. 3110 80g  9" motor
The specs look amazing. They tested it at 32V 8S! Ofcourse I would only run 6S
or 
3115 100g  10" motor
or
"oldschool" 2814 93g

3. 6S Batteries.. The weakest link! 
XT90 is a given. When motors alone are almost 400g, you know you need big battery.

Big problem is that Gaoneng big batteries come with thing cables!
4200mah 620g
1800mah 310g x2 << despite logistics, maybe the best option.
3300mah 440g
6500mah 615g 4S - great for cruising
7000mah 4S 540g << HV cells

4. Props
Masterscrew 10"

I broke all my HQ props on my Merica 9” with literally zero damage to anything else. I have put my last set and stored it for now. 9” props are a money pit for me.

Hopefully someone makes durable props for these monsters.

Love my Slim Nasty 10. Sounds terrifying with Aeronaut 10x7 biblades
But yes, if you go down you break stuff. There will never be props that handle that kind of punishment.

I think the reason there aren't many prop choices for 9" and 10" quads is simply because they aren't particularly popular sizes of quads, so the market is limited which likely makes it not worthwhile for many manufacturers to invest their time and money designing and manufacturing props in those sizes for the few sales they will make from them.

Also, such large quads are usually expensive and designed as cruisers or cine lifters which aren't normally going to be pulling the type of stunts where they are at risk of constantly crashing, so any props that do exist in such a large size are probably going to be designed more for reliability during normal flight than for durability from crashes.

This is probably more suited for professional applications, such as film making, or Mexican cartel.

(05-Feb-2022, 07:59 PM)leestrong Wrote: This is probably more suited for professional applications, such as film making, or Mexican cartel.

Not the Mexican cartel ?????? ...
But in all honesty ...unless you live next to wilderness...there just is no real safe way to go out and fly something that large without attracting way toooooo much attention. I also am not sure, other than lifting heavy things (which I don't need) , that a 9" quad could do better than a wing or a 7" quad built for range...

Obviously bigger props are more efficient. My 15" Daya550 could run on 15A AIO FC.. the amps are so low.

About 1kg 10" could make 2.5kg to 4.5kg+ thrust per motor, depending on motor, KV, and prop. 20kg thrust can easily carry a cat or small dog.

Outfitted with 2P or 3P 18650 li-ion, can be 40min+ flight time. The 7" with huge 5000mah li-ion, do 16min, 8km up mountain and back. The 10" could potentially do double.

(06-Feb-2022, 01:26 AM)romangpro Wrote: About 1kg 10" could make 2.5kg to 4.5kg+ thrust per motor, depending on motor, KV, and prop. 20kg thrust can easily carry a cat or small dog.

Now that's what I call a bird dog! I think a Corgi would pair nicely, with those lil legs they need all the help they can get.  

I think for most 7" gives enough flight time, especially with a li-ion. More frame choices and parts.
For me i want the quad to fit on my backpack with raincoat over so i can take it hiking and on bicycle. Raincoat is also good if i walk into stores to buy food or whatever. No need to flash expensive quad in public. Mayby i could fit 9" if i take the props off or it was foldable but i am too lazy to take em on and off all the time hehe. Cycling is my other hobby so i like to combine the two and i can get to places i cant with a car. I cycle true forest paths and find a spot to fly.

And ofc as you mentioned, expensive props and batteries.
But i am interested in this frame, basicly a FR8 but foldable!
https://armattanproductions.com/pages/kit_detail/2824

9"/10" can easily fit in trunk/seat. Its not like X class or something.

Its just 2 more inches than 7... well maybe not.
With, 9" props 48cm wide. Xing2806.5 7incher is about 36cm. One of my 5" ultralights is a slim 22cm.

I have had problems with HQ props in the smaller sizes. they bend and stay bent far too easily. Even a light ground strike folded a couple up like a crinkled up paper bag, and they were only 3"!!

They are now firmly on my avoid list.

My biggest quad is 6", runs DAL Folds, they are quiet and stand up to abuse well, but looks as though they are ceasing production?

Why are so few people building / flying 9 and 10 inch quads?

Or perhaps, why are so few hobbyists building / flying 9 and 10 inch quads?

The large commercial concerns ARE and DO fly large quads.

Well, I have a theory. Unless you are a commercial concern with pilot's license and all that stuff,
what does a larger quad do for you?? Yeah, big, noisy, go get 'em. However, if you are a hobbyist,
the smaller quads are just a better fit and a whole lot more cost effective. Plus, you need a 100 acre
farm just to fly the thing. Ok, maybe a desert.

Have we not noticed that products in the smaller "4 inch and less", sub-250 gram, category are
just exploding. New things for these smaller quads are coming out almost daily. Now, they wouldn't
be producing this stuff it there wasn't a market. This is where the interest seems to be.

Why?  First, cost is a factor. Plus, now the 3 inch and 4 inch have performance metrics
that rival the 5 inch. Plus, 4 inch can go long range if that is your thing. However, perhaps
the bigger issue is all the new drone laws and regulations particularly with the FAA here in
the USA. At least with a sub-250 gram quad you can come pretty close to being legal...or at
lease perceived as legal. The BVLOS might be the only questionable thing, but if no one
observes it, then it would be really hard to prove. Whether or not anyone agrees with my
theory here, it sure looks like it is becoming real. If might not be right, but it is real.

I am so tempted to get Xing2 3110.
I could be first to review them. They promise great efficiency. And I have like 20+ 3000mah 18650 just colleecting dust.

But...
Its almost identical stator size to my 2812, and BrotherHobby makes quality motors. I'm only getting 15min slow cruising on 2 year old 6S lipo. I dont think Xing2 will change that.

(08-Feb-2022, 06:47 PM)iFly4rotors Wrote: Why are so few people building / flying 9 and 10 inch quads?
. At least with a sub-250 gram quad you can come pretty close to being legal...or at lease perceived as legal.

Yeh....People KNOW a big quad like a 10" quad isn't legal in a park or field that you can easily get away flying a 3/4" in. They scare people, and look as dangerous as they are. If I lived in AZ or somewhere mountainous, I'd probably build one anyways though.

For now I'm looking at wing options, because for some dumb reason, people see giant wings or planes and don't associate them with drones. Translated, they point and smile and go about their way without hassle here on the east coast .

Hi BigBeard,

Yeah, the less people feel threatened, the less likely they are to call the authorities.

Yes, a small, quiet, "toy" quad is mostly viewed as non-threatening.

If I lived near a desert or a mountain range, I might reconsider, but I don't.

I truly believe that the future of the recreational quad or drone will be in the smaller
sizes, particularly the sub-250 gram category.