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cool, I like them. What's the frame weight and how many mm thick? Your build and the new 6" props I'm seeing are motivating me to take my 5" 2S 21700 250g build and go for a 2S 18650 6".

5mm thick, 34g. and HQ Prop 6x3.5 Fiberglass Props are the better for this setup. very light and low pitch. durability is very low, they're old.

experience helps a lot. and also careful check for signs. and calculating and faith 😁

i have a lot of experience with small motors. and you can just scale them up. they're all the same. if you have a lot of experience with big motors you can just scale it down.

With a new setup you check for signs. fly Line-of-Sight, arm it, raise throttle a bit, see how it flies, bring it down, check motors, raise throttle a bit more, and repeat the process. see how the quad behaviors helps too. like does the quad struggle to lift off, punch out, or to turn.

Calculating: do research, see what the closest setups have like motor size, prop size, weight, and how they fly. there are classes for each size and the all about the same, ultralight weight, light weight, medium weight, heavy weight, super heavy weight ( i just make up those classes to put them in categories and it makes it easier for me )
Moving up in prop size also needs moving up in motor size. you stare at pictures of props and motors together soon you'll have some ideas.

Faith: 2203 motors are new motors. you don't know what they can take. but you see 2204 videos from someone and they spin 6" props just fine and that setup is medium weight. so you take a leaf of faith and build very light weight 2203 6" setup. and repeat the initial process above.
I've rarely burned motors, but i have my fair share of failures. sometimes motors are too small and it can barely move. for example, i've tried 2203 with gf6042 and those props are too much for 2203, so i didn't like it. well, i don't like most 6" props for 2203 also. they're made for much heavier setups. but then i don't have much choice for 6in props, so i just picked the best possible for 2203 motors.

lol i talk too much.

Thanks for the explanation. Not talking too much - valuable insight. I'm considering the megabat myself so will try to put some of what you described to use.

lol no, they're right-side up. but both sides of the blade look about the same. i wonder if people can fly 3d with them.
i know they're right-side up because there's only one right way to put them on. if you have those APC props you'll see.