The early Hurricanes had the Merlin C with a two blade wooden fixed pitch prop. Later aircraft with the Merlin II or III upgraded to a metal 3 blade two position variable pitch prop and then to a constant speed prop
If you can find it see the film of an S6 with a RR "R" type and a fixed pitch wooden prop set for very high speed skipping sideways as it struggles to get airborne
Last edited by Dick Whittingham; 9th January 2013 at 15:58.