Crank Measurement, and a question about Fillets
 

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Pulley 29.98
VIII Main 30.98
VII 56.97
VI 56.97
V 56.97
IV 56.97
III 56.97
II 56.97
I 56.97

Rods
VI 56.48
V 56.48
IV 56.47
III 56.47
II 56.47
I 56.47

This is, obviously, a crank that has been ground .50mm under on the rod journals! I knew that because the part number for the rod bearing set was an .50 undersize set.

All the ovality measurements at 90 degrees to the initial measurement were the same. The measurement really should be done with a micrometer with a greater resolution than my Fowler .01mm version, three digits would be nice. But the crank is usable by these measurements, now it has to be checked for runout and cracks.

Now, the Fillets. No, not Fillets Mignon. Crank throw fillets.

The fillet radii are nice and large; I didn't have my radius gage, but I used a drill bit with a 2.0mm diameter (a 1mm radius) and each measured at least 1.0mm. But when the rod journals were reground, it looks like the grinder nicked the edge.

The rods rotated smoothly around their journals with no side-to-side play. What is the correct next step, check the rod side clearance?

Here are the photos. See the silver marks on the rod throw? Maybe this was from the grinding process.

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