The next part to to be made were the slave rods. After making the blanks, I chucked them into the self centering four jaw and turned the piston end round.
Then it was over to the mill to drill out the holes.
Next I turned up a set of filing buttons and hardened them. I used them to radius the ends of the rods.
Then the rods were slotted in the mill. I didn't have the right size slitting saw so I used a 1/16 two flute endmill to make the cuts.
Then the material for redoing the intake manifold came in so I spent a couple of nights getting that finished. The process was the same as last time with the exception of threading the parts so I didn't take any pictures. With that out of the way it was time to start the master rod. I marked out the limits and drilled the holes.
Then I spent all of Saturday afternoon filing the master rod to shape.
I expected the frame to be the toughest part of this project but it was nothing compared to making the master rod. The small size meant that it was an old school cut, file and fit job. I did notice a mistake in the plans. The callout for the blade that fits into the piston is smaller than the hole size by a significant margin. I upsized mine to match the piston size. Next up were the pins that hold the slave rods to the master. They were profiled and cut off.
Then the slave rods were assembled to the master and the ends of the pins staked.
Now for some pistons for the rods. The pistons were turned to sized and received their oil groove.
Then for four of the five pistons the center holes were drilled.
The piston for the master rod posed something of a problem. The plans call for making the holes in all five pistons the same (I.E. round) but the master rod is made from flat stock. I guess that would work if I was planning on soldering the parts but I'm using Locktite 638. As I result I chose to slot the piston in the mill instead.
Here is a family shot with the new manifold and finished piston assembly (minus the crankshaft).
Till next time
Tony
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