I would like to share my 3.5" quads and setup as I think it will help me stay in the air, record 4k footage while not breaking the bank when crashing.
I'm shure this will also work great with frames like the Grinderino or similar (I made my decisions besides sturdiness on what was available and how easy I can get parts if needed).
Maybe this can also help you.

Frame: Lil Matey 2
FC: KISS Ultra mini v2 (B61)
ESC: MAMBA F40_128K BL32 MINI 4IN1 ESC 40A
Motors: Brotherhobby 1504.5 3950kv
Lipo: GNB 4S 720 HV and Tattu RLine 750mah
VTX: Walksnail Moonlight 4K
Props: HQ 3.5x2.5x3

Frame: TanqS
FC: KISS Ultra mini v2 (B61)
ESC: MAMBA F40_128K BL32 MINI 4IN1 ESC 40A
Motors: Lets fly RC 1604 4000kv
Lipo: GNB 4S 720 HV and Tattu RLine 750mah
VTX: Walksnail Moonlight 4K
Props: HQ 3.5x2.5x3

#piratframes #kissultra #lilmatey2 #tanqs #moonlight4k #walksnail #fpvfreestyle #fpvdrone #sub250 #b61