TomTreese

My Feedback: (1)

How much will dirty ducted fan blades affect the efficiency of the motor.

BarracudaHockey

My Feedback: (11)

How much is a factor of how nasty the fan is but yes anything on the airfoil will degrade efficiency and worse possibly throw the system out of balance and at the speeds they spin is undesirable

TomTreese

My Feedback: (1)

I have a Freewing Vulcan 4S EDF and this time of year when the crabgrass is growing rapidly < even-though the runway is mowed at 1"every 3 days, I have trouble getting enough speed to take off. Yesterday I removed the EDF unit and the Blades and housing were coated with a layer of grass stain and debris. I cleaned them thoroughly and will try again Saturday with a new 4S 4200 battery.
I think the failure to get airborne was as much a fault of the dirty EDF as it was the grass???
Thanks for your response.