The new crankshaft is now finished. I have made the new one a bit more robust than the old one with slightly larger diameter shafts and journal. The webs are identical in profile and dimensions to the old ones, with just the thickness being increased slightly to 1/4". I have added 1/8" keyways as the flywheels were only held onto the old crank by a single locking screw each and had quite a noticeable wobble. Hopefully, boring them out for the larger shafts and adding a keyway will result in a more secure attachment with truer running.
The only other change I made was to adjust the length of the shafts either side of the webs as the old crank was very short one side and unnecessarily long the other, and the short side would not have left much room for a key.
