Work now begins on the timing and valve bits. Here’s the eccentric after the usual filing to clean up and with the bore opened out to size. I chose to do that on the mill with a boring head.
However, I trusted the book again and opened the bore up to 16mm – instead of measuring the supplied stock for the sheave and working to that, so I had to turn down a new piece to fit my nicely bored hole – seem here being ‘parted off’ in the bandsaw !
And partial assembly. The book suggests a clever way of achieving the eccentricity required – placing a 3.5mm spacer on one of the jaws in the 3-Jaw chuck – this worked really nicely.
