18” or 18.5” fan for a 440?
And too close to the radiator.
There are repos and used ones available.
Properly designed like a funnel
Bad design, flat and blocking airflow at driving speeds. Red arrow is not a flap.
Most home made shrouds ( and comerical ones too) are too flat (parallel to the rad core)
And too close to the radiator.
There are repos and used ones available.
Properly designed like a funnel
Bad design, flat and blocking airflow at driving speeds. Red arrow is not a flap.