I know the last post said the next one would be doing the oil pump shafts but I changed my mind and decided to do something a bit more complicated and settled on machining the steering arm castings. They've been lying around a while and are definitely aged enough.
This part is roughly equivalent to the upper triple clamp on a conventional motorcycle. Unlike an upper triple clamp this part is not subject to suspension loads, only steering forces. The dual drag link configuration is designed to transmit maximum feel from the front upright-wheel assembly to the rider's hands.
I then index the fixture plate 90 degrees and machine the steering drag link bearing mount holes on each side of the part. This is another quick operation and proceeds with no problems:
That completes the part.
Now reload and rerun a few times and I have 4 machined castings ready to use:
That's all for now. I think the next part will be the front spider which will allow me to test assemble the upright assembly.