Crank Shaft
The crankshaft project actually started in 2017 when I got the casting kit. I had machined all but the rod journal on the crank. I started digging the parts out with plans to resume working on the engine again. Not a lot of pictures of machining the shafts and throws of the crank though.
October 2017
Using my newly acquired ER40 collet chuck and a pointed live center I machined the two shaft ends of the crank. The Diamond Tool Holder was a perfect choice for the Ductile Iron of the crank casting. I turned them down to a hair bigger than 0.500" and used emery cloth to take it carefully to the desired size. Right side shows the shafts machined. Next step is to machine the throws.
Here's the crank with the throws machined. Next step is to cut out the support web and machine the rod journal. In order to do this a fixture needs to be machined as I no longer have access to the Van Norman crank grinding machine, not that it would fit...
April 2021
A chunk of 3" aluminum round bar from the stock pile was faced off then machined with Mill Verde. Shaft goes down the deep hole and the set screws hold the crank tightly into the fixture.
I cut away the web in the throw in preparation to machining the Rod Journal. This will be one of the more stressful operations as the journal has to be spot on, "oversize" rod bearings are no longer available for this engine. roflmao