Koolhoven F.K.41

My first scale project ...

Specifications

  Original Model
Scale 1 1:4
Scale Area Factor 1 1:16
Scale Volume Factor 1 1:64
Span 10,50 m 2,625 m
Length 7,80 m + prop 1,95 m + prop
Height 2,20 m 0,55 m
Chord 1,75 m 0,4375 m
Minimum speed 75 km/u  
Cruising speed 140 km/u  
Top speed 159 km/u  
Wing area 16,6 m² 103,75 dm²
Wing loading 588 g/dm² 87 g/dm² / 106 g/dm² *
Weight 1000 kg 9 kg / 11 kg *
Diameter propellor 1,95 m 0,4875 m
Engine Cirrus Hermes I 3W 28i
Power 105 pk 2,75 pk *
Cubic capacity 572 cc 28,5 ccm *
Propellor   18"x8" = 0,457 m *
* Not related to original.

The Cirrus Hermes I engine:

... and the 3W 28i: