Engines > From Plans

Rebuild time for my Upshur single

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Art K:
Ok I had said I was missing some photo's earlier, so here they are. After doing the cooling fins I flipped the rotary table so the holes around the diameter could be done. Here are the manifolds pressed in as well.


Pressing the manifolds worked really well. I mounted the fixture in an angle plate lined up the holes with the 1/4 shank of an end mill then the manifolds with a 3/16 drill and pushed them in right on the drill press. The hardest part was trying to line up the 2-56 holes straight.
Then I moved on to the crank. I had a piece of 1144 so I cut and faced it to length. Mounted it in the v-block indicated it center drilled the two centers. Then flipped it and repeat. I was then able to use a lathe dog and turn the crank throw.

I used a standard cutoff tool to rough it out.

Then spent what seemed like forever on my wimpy grinder making a tool that could cut the rest of the groove. It started out as 1/4 X 3/4 I was concerned but it worked great, I needn't have worried. Today I spent spent turning the gear side of the shaft with it's three diameters .329 for  the gear .315 for the bearing and .3125 for the shaft.

Well I think this is enough for now.
Art

Don1966:
That looks great Art!!....


 :cheers:
Don

AlexS:
Thanks for reply Art!

Art K:
Don,
Thanks it's great that people are following along.
Alex,
I hope that my info was helpful. I originally didn't want it there, thought it would clutter the cover. I now have a nice oil filler plug in my first choice. Think about rotation of the engine, where splash lubes will push the oil. Right where I put it. :wallbang:
Art

Brian Rupnow:
Okay---I have to ask---What is holding the hex nut in place between the cheeks of the crankshaft? I don't see any glue (I use a hot melt glue gun). Sure hope you didn't just wedge it in there.---Brian

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