Kevin, Yes always unwrap in the workshop to minimise the risk of having to buy more shoes or diamond rings!!!
Dave,
Spec of Schubelerv77-DIA HST with DSM6740-650:
Inner shroud diameter: 120mm
Fan swept area: 77cm²
Weight incl. motor, wires, connectors and
Secure Fan Fix: 1240g
Thrust range: 71-91N
Exhaust speed range: 87-98m/s
RPM range: 24.000-28.500rpm
Input power: 4,2-6,2kW
Allowed battery: 12-14S 9000mAh
Overall efficiency: 71-72%ec: