Recent content by cogburn

is there a good site or post here that shows or tells how to lap a cylinder?

You wouldn't be interested in renting out those dies would you?

On this particular engine, the piston is attached to the connecting rod by a single wrist pin through the piston wall and into a hole in the connecting rod and then into the opposite piston wall. This engine does not have a crosshead and the crank end of the connecting rod is attached to a crank...

Thanks guys- I will proceed.

I want to modify a plan for a small single acting mill engine featured in one of the old MODELTEC magazines. It is an engine by Ed Warren he calls KATE. It uses a 2 inch cylinder and to make it fit what stock I have I want to shorten the cylinder by 1/4 inch and keep the 1 inch crank throw the...

OK- This last diagram helped much. I am sure my terminology lacks correctness or specificity but all of the replies were useful in that I am gaining knowledge with each one. As I said I am pretty new to all this but it is fascinating to me. Some people like to go out and watch birds and such. I...

I figured out how to attach part of the plans here as .pdfs. It shows the valve and cylinder plans. This might help you see what I am asking about. I added the crank throw and valve throw plans too. If I read the plan right the crank throw is 3/8 and the valve throw is 1/2.

Thanks for the info and the links. I have some stuff to chew on for a good while. I appreciate all the replies. Scott

Ok- I am wondering if we can discuss a second the specific valve that is designed on the E-Z engine that is I think called a "spool" valve. On the sheet from Blogwitch, it says that the length of the large diameter part of this particular valve should be the same as steam port width. I think on...

Thanks Blogwitch, That is a big help. I will study the drawings and see if I can make application to my projects. Scott

I am hoping someone can point me in the right direction. I am very new to the whole metal working thing but I have built one model - a Rudy Koutouph designed little horizontal engine. It is not pretty but it works fine. I want to understand the valving on these engines like horizontal mill...