A AIR HOG Member Nov 17, 2018 #1 Does anybody know the ratio of the vacuum drive shaft relative to the crank RPM of a Lycoming 540? or If the crank RPM is 2400. what would the vac drive RPM be? Found the answer, 1:1 Last edited: Nov 17, 2018
Does anybody know the ratio of the vacuum drive shaft relative to the crank RPM of a Lycoming 540? or If the crank RPM is 2400. what would the vac drive RPM be? Found the answer, 1:1
