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Yes, My pseudonym refers to my welding hobby. I'm not certified, but I have welded a pair of racing carts for SAE mini Baja, and passed the sample tests that they require for tech inspection. I have never worked with copper, so I think for now it would be better for me to stick to steel and be...

sounds like a test of some sort is in order... I should just stick to the chart for now, the drill rod piston in an aluminum bore is just too easy. Perhaps a drill rod sleeve in a aluminum block with a brass or aluminum piston? No matter what I come up with it has to be better than what I got!

Thank you very much for the chart! I have been trying to figure out what materials I needed to go to on my next engine for weeks. I knew I had messed up when I went from a perfect fit to 10-20 thou of slop between the piston and cylinder in a matter of days. This chart backs it up. I am...

Hello, this is my first engine. I designed it based on a concept that is widely used at my school for a class project, but I really tried to push the envelope on machining precision and ease of maintenance. I made several major improvements, such as all milled mating surfaces, much larger...

Holy cow, that is a lot of info. Exactly what I need. My engine is single action, and I am really not interested in getting it above 1000 RPM, being as it is not easily balanced, and it will start beating itself to a pulp above those speeds (I put 120PSI to it once and it started rattling paint...

I really wish I had access to cast iron now... How do you think steel cylinders on a bronze piston would do as a compromise?

I am very interested in working in iron! one of my biggest problems with this motor it that it is wearing out extremely quickly, and I was going to ask yall how to prevent that from happening on future builds. I figure that harder materials would be a big part of that. Right now my cylinder is...

I really doubt I will be in violation of any major laws being that my engine has a .400 inch bore and about a 1 inch stroke, and runs on less than 20 PSI, but I am definitely in the dark about what that means for the sizing of my boiler. It sounds like you are the guy I'm looking for though...

Hello, I'm a young man looking for people who know more than I do. I've always been fascinated in the building of things, whether it be boats, planes, trains, or automobiles, and the more insane they are the better. Whether they go fast, accelerate hard, do something that none else do, or just...