Re: Reading Baldwin Drawings

You're right - that's aggravating!

It would be easier with two monitors, or printing these out and laying them up side by side, but I think the sections are taken at each axle. With the exception of the front cylinder section.... Which appears to be taken at the fore-aft center of the cylinder casting. Really, it's kind of a 'match up the section profile to the devices in the side view' sort of a task.

Section lines are more clear, although section lines also clutter a drawing significantly if you're trying to also add reference dimensions at that section point.

SRK

RedCarGo Wrote:
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> To help in building a G scale model of a 2-6-2
> narrow gauge Prairie locomotive, I obtained
> several erecting drawing from the Baldwin archives
> at the DeGolyer Library. The drawings include a
> profile as well as cross section views. In modern
> engineering practice, cross section views are
> marked on the profile drawing with a vertical or
> horizontal line with arrows at the end points
> indicating the direction of view. Back at the
> start of the twentieth century apparently that was
> not the practice. The cross sections on the
> extreme right and left of the Baldwin drawing are
> end views looking forward and aft respectively.
> But does anyone have an idea how I can determine
> the cross section locations and view direction
> between the ends?
>
> Any help appreciated, Phil
>
> [attachment 54908 EwaProfile.jpg]
> [attachment 54909 EwaXSections.jpg]