Baffles Valach by Fiala FM250 R5 Size:VM250 R5 baffle wheels with 178 mm (7”)

wheels with 178 mm (7”) diameter

Udet literally extended his horizons by accepting his first invitation to show his aerobatic "act"in America

The pilot and instructor or passenger sat in tandem

32x19 for S250 warbird

including ignition:  7840 g

Baffles Valach by Fiala FM250 R5 Size:VM250 R5 baffle wheels with 178 mm (7”)You will not find a full size radial powered airplane of the cowl'ed kind that is missing baffles. Air is lazy and will find the path of least resistance, meaning it will go everywhere but where it is needed: between the fins of your motor. Furthermore we need to somehow achieve a positive ratio of incoming to exiting parting. Meaning, your round opening of you cowl is most if not all cases exceeds the exit port by a multiple, creating a bottleneck