Brian Rupnow

Yesterday I ran all over Barrie buying a new garden tractor. This morning I wanted to something a bit different, so I machined the...

Today has been a laid back kind of day. I made the oil filler tube and Loctited it into place, made the oil filler cap and right now it...

This morning was devoted to tappets and tappet guides. The tappets are as per Upshur drawings. I added a 0.050 thick flange to the end...

No machining over the weekend. This weekend was devoted to leaf raking. My one acre lot is surrounded on 2 sides by oak and maple trees...

Regarding the sparkplug counterbore--my drawings call for a 0.375" diameter counterbore for the sparkplugs. This is too small, and there...

K2---You have nothing to apologize for. Your views and comments are welcome here.---Brian

Today I broke out my gear cutting stuff, and made gears for the Upshur. These gears actually fit inside the crankcase, but I stuck them...

Today I cut cylinder head fins and made up a couple of rocker arm support towers. Not terribly exciting, but it took up most of my day...

Are we all finished pissing on each other now? Can we get on with the build? Sid is a talented man, I have acknowledged that. I don't...

Sid--You did me a big favor and made a pair of excellent cams for me. I appreciate it. I doubt that anyone is going to be able to show...

Yes, of course you are right. One of these days I will have to get someone to teach me how to use my Solidworks.

Today I didn't accomplish much. I made both cylinder heads, but I had to go across town and buy a slitting saw to cut the fins into the...

My con rods are centered on the cylinders. It's not the flat sides of the rod that fouled, it was the edges of the rods that fouled the...

So, today I reached a milestone with the Upshur opposed twin cylinder engine. I have assembled all of the major components and...

I have used sealed ball bearings. Werowance--was it this engine that you built? If so, please give me a link.---Brian