hi,
sure…
for the in house motor, well most of it is confidential in terms of specs but it has a good torque. it is mainly optimized for the 20-30kmh speed range in terms of efficiency.
the battery compartment do not have seal and let water in. the nose of the fuselage has a hole and water flows to the ESC and cools it down then exit from the mast head. the mast head has some holes to release the water from both battery compartment and ESC.