N ngleadow Well-known member Joined Dec 8, 2010 Messages 82 Fluid Motion Model C-24 C Vessel Name Blue Socks (sold) Nov 6, 2016 #1 Does anyone know the relationship between engine rpm and propellor rpm using the KMH40A Gearbox on the R25?
Does anyone know the relationship between engine rpm and propellor rpm using the KMH40A Gearbox on the R25?
O Osprey Well-known member Joined Nov 15, 2011 Messages 358 Fluid Motion Model C-28 Vessel Name Osprey Nov 6, 2016 #2 The reduction ratio is probably 2.62 but you will have to check the data on the nameplate to be sure.
The reduction ratio is probably 2.62 but you will have to check the data on the nameplate to be sure.
