FM250-R5-FS 250ccm

Fiala Motors also known as Valach Motors

Fiala Motors VM 250 5 cylinder Radial

Volume      250 ccm
Bore            42 mm
Stroke         35,6 mm ( average)
Weight         5,6 kg
2-blade propeller      32/16, 34/16, 34/18
3-blade propeller      30/16 
RPM Range       1000- 4400