Martin and Erik: Thankyou!
With 6S 2200, you lose nothing over a 4S3700-4000mah set up.
Despite the sound, the EFlite fan is one of the better units.
Also, as far as HV and SHV, I think 6S 2200 is probably the best solution for 70mm, in terms of performance and weight.
Originally Posted by Erik v. Schaik
If you really enjoy increasing efficiencys you'd probably end up designing your own edf jets too
Please keep an eye on the older units. new products aren't always always an improvement.
I already have a jet design and a "new" rotor design in my head. Don't know if either will ever materialize.
Also, the Change Sun 10 blade 70mm, as well as the 90mm and 120mm is a rip off of the STUMAX rotor design. It needs a big motor to have good system efficiency.
Some have had success with it.