User Profile

[brian Rupnow]

We have a piston!! Everything went well, piston fits cylinder as I had hoped. I almost had a conniption fit when I went to cut the ring grooves. I couldn't...

[brian Rupnow]

Today I am going to make an aluminum piston. Nothing exotic here, maybe the skirt is a bit longer than usual, but other than that it's a plain old piston....

[brian Rupnow]

Sparky---
...

[brian Rupnow]

Crankshaft is in, dummy shaft is out. Crankshaft turns easily, nothing crashes. This is always a milestone event for me, because there are so many tolerances...

[brian Rupnow]

I have the Happy-Buy vice shown in your first post, and I am very pleased with it.

[brian Rupnow]

It's suppertime, and I have a finished crankshaft. It needs a couple of keyways, and I will add them tomorrow.
...

[brian Rupnow]

I'm about half way done with the crankshaft. So far, so good. I nailed the center diameter right on, and I'm about 0.001 oversize on the one end thats...

[brian Rupnow]

Having a lazy day today. When I was reducing the 1144 roundstock for my crankshaft from round to flat the other day, I noticed that the cut was different...

[brian Rupnow]

Back at the beginning of my career, my company was involved with a lot of steel structures. All beam, column, girts, perlins, and angle bracing. There...

[brian Rupnow]

When I started in engineering in 1965, I worked with some of those people near the end of their careers. They were truly impressive.---Brian

[brian Rupnow]

I like to make my one piece crankshafts from 1144 stress proof steel. It moves very little while machining, far less than mild steel or cold rolled steel....

[brian Rupnow]

Sid--I've sent you off an email with a stp file and a pdf of the drawing. If you need anything else, please let me know.---Brian

My email is [email protected]

[brian Rupnow]

Sid---What format do you want. Send me a private message with your email on it.---Thank you.--Toolguy, thank you for your offer.---Brian

[brian Rupnow]

Okay, maybe it's time for some wheeling and dealing. Any of you CNC guys out there want to make me a couple of cams as shown? Surface around outside has...

[brian Rupnow]

Today was not a good day. I fought the cams and the cams won. The cutting tool slipped in the holder. The stock slipped in the chuck.
I was overwhelmed...

[brian Rupnow]

Today I have prepared a piece of 01 material to make two cams from. The length of the piece is determined by the depth available in the three jaw chuck...

[brian Rupnow]

The tappets have been heat treated and assembled and installed in the bushings in the tappet guides. The valves are ground and cut to length, assembled...

[brian Rupnow]

Today was tappet day. Doesn't look like much, but these were all machined from a length of 3/4" diameter 01 steel. They will be flame hardened and...

[brian Rupnow]

Today was a semi quiet day, finishing up little things. The valve seats were cut with my special George Britnel tool. (Actually a larger version of my...