first i apologize for not discussing in details. because if for some reasons some company might copy the motor and make it out to the market at the same time or before they do. they might be looking at me to blame. and i try to avoid that.

the reason you don't see propwash in other 3" 1s setups is because they don't do inverted yaw spins. those moves are hard to come out clean without propwash at the end, especially for 1s setups. if you re-watch those videos you'd know it's true.

i can tell you that this setup is good. it can turn/corner really well. power-train is good too.

there are a few ways to deal with propwash after an inverted yaw spin. one, raise the idle speed and two raise the throttle really fast at the end of the moves.
raising the idle to high for 1s setups or ultralight weight setups is not ideal. you can't throw the quad even for a short distance and it feels weird.
raising the throttle really fast at the end is more ideal. you can keep the idle speed low. and this setup has enough power, so when you raise the throttle up really fast you could avoid propwash. and you can see that in this video that i don't always come out of inverted yaw spins with propwash.

i can avoid showing propwash by not doing inverted yaw spins. but i decided to do it anyway :)

one more thing, don't raise camera angle if you want to do inverted yaw spins. they will look bad. the less camera angle the better. but my cam angle is at about 20 degree and i cannot fly with lower angle than that.

i did that because they are available ( not in use ). other boards are in different setups.
yeah, the new Happymodel board with expressLRS is going to be very popular. it's the board to use for whoops and 1s setups.

and don't pay attention to those links i'm using different parts. Rotorbuilds make you put in some links,