So, I have decided to have a go at a PM Research No4 build. Base has been machined, bearing blocks more or less complete with additional bushes. Crankshaft and flywheel nearly finished.
![base flywheel.jpg base flywheel.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
![crankshaft assembly.jpg crankshaft assembly.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
![bearing blocks.jpg bearing blocks.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
![base assembly.jpg base assembly.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
Next job is to drill and tap the flywheel for the grub screw then need to cut the keyway and make the key. After that I will polish up the completed parts then move on to the frame.
I would have been a bit further on but this arrived a few weeks ago.
I had to reorganise quite a bit of the workshop and build a base for it to live on. A few years ago after I got rid of my cnc router I said I would never build another but the pull of the dark side was too much to resist. This will be converted to cnc but hopefully I will finish off the engine before getting stuck into it.