EDIT - Had many good flights, but pushing the older Crazybee F3 board... It needed replacement, which in turn which increases ups our limit to 13A.

Updated both the throttle curves and betaflight curves to smooth out the lift a bit. It now flies to my liking with the four blades, but I wanted to try a 'mini cinewhoop' .. could not find any 5+ blades.. using a rotory tool and wet sandpaper, I've crudely cut down 6-bladed 50mm > 40mm. Expecting poor results as I'm sure there are better ways to cut them down. Test flight tomorrow, if they feel stable I'll record flight times on both 4-blade and 6- blades with 520 2s, 720 2s, 450 3s, 380 3s (last if ehich I expect to be too brief..)

.. next step may be to to test yhe above against my 1202.5 flywhoo. To risky? too hot?

1103b goingbto a gnargly build?

Early version..
Purpose of this build is an indoor tough stable flier. Will do more testing, but so far this has been a success. This has been very gratifying cleaning up old connectotions and repurposesing the Mobula7 board into this project.
Flight time when I used a 750mah 2s was More than 4:50min, but the AUW was 107g which seems crazy considering this board was originally a Mob7.. but for indoor only it seemed just fine. Toying with the idea to also take advantage of this in the woods camping.. with the 4k nano cam and decent flight times, the ducts should make this resiliant and it could be fun to fly on car sites (too loud?) or on the trail at times with woods/terrain breaking any potential wind.

My original Mobula7 performed well as an indoor/outdoor capable whoop. Now that I've completed the phantom toothpic build project I can move my original Mobula7 board into an indoor focused build.
The Crazybee F3 has served me well having now performed numerous mods, so I decided to risk it. Was able to pull off the motor connectors, fix the original SPI antenna (to remove the external XM Rx weight mod), and shorten wires running to the diamond vTX (they were 3 times the length they needed to be .. too much weight/clutter! The Crazybee F3 Pro board I expected would fry.. but so far with testing the flights are staying under 3A just fine.

This worked out much better than I expected.

• Undercarriage I've added a 1mm 25mm>20mm transfer board to cover the FC (something most builders aren't comfrotable with the gaping hole .. neither was I!)
• enough room to stuff vTX, DVR & FC all at COG :D
• saved a smidge of g's using SPI on board
• very suprised at the weight of this thing on 40mm props.. for indoor it's working fine though :)

A few issues still to address These may be fixable with some orientation changes.. but I'm willing to comprimise to save a few bucks (so I don't have to buy a whole new AIO FC).

• USB and DVR is inaccessible due to the orientation of the board and additionalprotection I've opted for.
• Original 1s batteries (300mah and 525mah) where being paired as 2s with an xt30 adapter.. don't perform well at all
• It's a bit loud, but not crazy terrible some have commented (but I won't be trying on 3s.. so maybe it gets worse)

Picking up a few 600mah 2s bats to bring down the weight a bit and colored ducts (to make it easier to find in brush and aesthetics)

** EDIT
needs to be much lighter
doesnt need dvr
learner tank crash test dummy style
cam with intigrated vtx is fine
whoop board with SPI antenna is fine
needs to be durable
4 or 5 bladed 40mm/1.6"