On 3/9/2010 2:06 PM, William R. Bayne wrote: > At one time there was a range of RPM in which sustained operation with > the McCauley props was not recommended. That restriction was never reflected in the tach. Remember, most of the planes of the era were delivered with a wooden prop. The McCauley restriction required a placard and was ultimately deemed unnecessary and rescinded in 1949. See http://www.skyportservices.net/cooperjr/McCSB13.htm
-- John Skyport East www.skyportservices.net
