Help with Northumbrian cylinder casting

The Northumbrian cylinder casting has two flat faces. One for mounting to the frames, the other for mounting the steam chest. Does anyone which is which as they are different widths, 1.014" and 1.250" before machining.

Edited By Eric Cox on 02/10/2014 17:00:26

Eric I don't know the Northumbrian but if you have the drawings for the valve chest it should be obvious from the width

Roy

Eric,

Only noticed your post this morning. I agree that it took me more than a few minutes to get the correct orientation and then a few head scratches to decide how to machine them correctly. If you can wait another day or two - Ill take some pictures and post them. They might help you.

PhilH

Eric,

These shots show my partly machined cylinder and steam chest.

This first shot (please excuse the blurred pictures) shows the bottom of the cylinder and the bolting port face. You might notice the cast lettering also at the bottom.

The next shot (below). I have machined the steam chest to the exact length (within 0.001" of the cylinder with a boss for the steam inlet. That's why the steam chest appears a little bit longer than the cylinder. However, you will notice that the width of the steam chest is a tiny bit wider than the cylinder. I did this on purpose so that the cladding sheet sits flush with the steam chest. I just need to round the cylinder cover bolting flanges using filing buttons. I hope these shots help. Phil H