Deans work great, they just have a rating, and it's 60 amps
The way i think Barts gotten away with it is you run two, one on each pack, your rig under my weight/prop/motor regularly hits 120 amps, it's about 48-49mph.......... if an fpv guy was going to run it on up to 140amp that i see regularly trying to make it go faster for extended lengths of time, said guy wouldn't be too surprised if it browned out......... Yours is right on the edge in the 4s configs your flying it. Russian Roulette comes to mind
I was building my ZXL, carries 2650 6s packs times 2,,,, i did a new deans connector the way i always have and the dumb thing would contact, not make contact (double boot plugged in, reboot touched). In a ship like that, it's the difference of being able to fly 15 minutes or 30 minutes............ and who would know which way it would be on any given day..... that was the last straw
5000mah, 40c would be a pack capable of 200 amps,,,,,,,,,,, should they put 14g so it's easy to solder or 8g so it can carry the rated output? Electronics is math, not guessing. Components to make a certain amp output have to have certain sized components to do it