The winding is the worst part for sure.. It would be good with a winding bot, could work well if there are removable teeth. I've read it affects the fields in a negative way so it might not be the best overall.
kV is a big factor as i'd like to try a wye wind. I might go to double LRK winding, wye connected and two controllers, i've seen it called 6-phase here, but that's only halfway true as i see it.
I think that should give med roughly the same kV as i have today, 45.. but the rotor build is a total unknown and that affects kV
I can't even know if the magnets i bought have the correct performance since it's from an unknown seller..
Efficiencies, power etc is therefore impossible to calc. I don't know what the RV120 honestly puts out in power and efficiency, i only know this motor should be a lot better since it will have better laminations and fill factor.
I think the pros of water cooling in real figures might be hard to motivate because of the complexity it creates.
Let's say the cooling system weighs 1kg, then it must give a lot better continous power potential or i might as well have a larger motor.
It is a gamble for sure.