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Old 09-20-2017, 06:50 AM   #71
bazmak
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I have that to look forward to on my Simplex


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Old 09-20-2017, 01:11 PM   #72
Brian Rupnow
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I have split the center bushing on the crankshaft for ease of assembly.


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Old Yesterday, 03:28 PM   #73
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Ordinarily, I don't use transfer punches, instead depending on my DRO's to match all the holes in different parts that have to bolt together. However, in this case I deemed it necessary, for a number of reasons. The 5/8" diameter rods you see sticking out of the top of the brass assemblies (which have reamed 5/8" thru holes) are also fitted into 5/8" reamed holes in the aluminum baseplate. I used a machinists square to align the brass assemblies "square" to the side of the aluminum baseplate, then used a transfer punch to mark thru to the baseplate. I will now put a small, discrete "match mark" on each brass assembly and on it's corresponding home position relative to the base so I don't mix them up later. There is about 0.030" clearance between the top flanges of the brass assemblies. I have a ton of machining to do on the base now, and I know that the brass assemblies will go back together with the base the way I intend them to. Each of the transfer marks will be tapped #5-40 in the base for the bolts which hold the brass assemblies in place.


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