Hydraulic slasher saw?

[blackdoggy]

I am plotting and planning my super splitter but I am stuck on how to construct a hydraulic 3/4 or .404 pitch saw. It looks like a simple connection of a key shaft hydraulic motor to a sprocket but my problem lies in how to machine the head to hold the bar on. I need some photos of what .404 slasher saws look like and the speed and pressure required for running the chain.
Any one have any ideas or photos??