I'm looking at the possibility of building a 2" scale traction engine without castings. I thought the Durham & North Yorkshire would be a good engine to try. I intend to completely model the engine in 3D CAD first -this will help me to understand how it all goes together, and make it easier for me to re-design any parts that I need to change as I'm not using castings. I already have a couple of questions;
I have the full set of ME magazines covering the building of this engine, will I find enough information in the drawings included within these articles to complete this project -or am I destined to come to a grinding halt at some time without the full set of drawings?
I'm drawing the boiler at the moment. The radius sizes on the flanged plates are not given, but as the plate is 1/8 I would have expected the internal rad to be at least 1t (in this case 1/8) which would make the external radius 1/4. They are shown as looking more like 1/8 externally and internally. What size are the radii likely to be on 1/8 thick flanged plates? (I suspect a little "draughtsmans liscence" on the drawings)
Thanks
Kevin