I just flew mine yesterday. Extremely fast for a park flyer. To clean up air flow to the fan, I used a yogurt cup cut to shape to ramp air into the fan unit smoother. Channeled the foam to sink the wires/esc into the foam, then put packing taped over the wires to have minimal disturbance to airflow. Also sanded the front intake opening larger and put a glass cap on it instead of the large radius vac form cap they give you.

Extended the clear tail cone to end of "scale" black tail cone using packing tape.

I may modify the fuse LE strakes and make them sharper.

Assembled it 90% with 3M bodyless tape and repainted it greys. Batt, thunder power 3s, 15C, 11.1V, 2100ma. 19.2 oz. flying. Will add missels next. I'll tape off the cheaters and try it.. Thanks

A great part of ducted fan performance comes from a good power unit, but in partner with great airflow from entry to exit.

Not bad for around $200.

steve