Volante engines were built by L'Aile Volante of Suresne (Seine), France. The firm initiated development of an HOAE family in about 1936. The following information has been reported.
O-91 -- {3.937 / 3.740 / 91.1} / {100 / 95 / 1492}
Same bore and stroke as O-180.
Same bore as O-175.
2cyl; C.C.2; 40hp@N/A rpm; 1937-1940; Wt = N/A.
Two-cylinder version of O-180.
Ae39toAe41.
Applications: None found.
O-175 -- {3.937 / 3.543 / 172.5} / {100 / 90 / 2827}
Same bore as O-91, O-180.
4cyl; C.C.4; 65hp@2400rpm; 1936-1937; Wt = 143#.
Differs only in stroke from O-180.
Ae39.
Applications: None found.
O-180 -- {3.937 / 3.740 / 182.1} / {100 / 95 / 2985}
Same bore and stroke as O-91.
Same bore as O-175.
4cyl; C.C.4; 65hp@2400rpm; 1937-1940; Wt = 143#.
Differs only in stroke from O-175; four-cylinder version of O-91.
Ae39toAe41.
Applications: None found.