Jim: Look back in earlier posts, you will find views of the water barrel being restored, also you will see views of the 12" diameter oak shaft being turned and prepared for the insertion and the eventual leading in of the cast iron crank on the pitman end, as well as the cast iron bearing on the running ends of the shaft.
You will also see the 2 large cast iron disks that have the buckets casted into them and that also are mounted on turnings on the shaft, one on each side of the water barrel (box). These cast disks are what give propulsion to the shaft as the water hits them from inside the pressurized box during start up.
You will also see views of the saw blade in the sawing area, and the large 20 foot saw frame with the (2) bunks , one solidly mounted and the other that can slide along on the frame to accomodate different length of logs.
These pictures should be rather close to the beginning of this thread, but not right at the beginning.
Ken: The crank has an offset of 9" giving the saw an 18" stroke. Now on large logs (say logs over 18" and up to 36") during the cutting process the saw dust has to work its way out from along side of the blade and in the cavities between the teeth, so on large cuts you need to take your time to allow this to take place.