KOZO Pennsy A-3 Switcher Frame weight

[powderhorn01]

Has anyone built the tender frame for the tender, substituting steel, for brass in the frame, and if so what is the weight you cane out with???
I have built the frame with the materials specified, except for the side rails, where I substituted channel iron for the bar stock. The weight that I have come out with is 28#, without the brake rigging, couplers, or floor on it. Add in the trucks, and it looks as though it ought to come out to abt 70-75# total.
Is this correct?

[gearedloco]

While the densities of steel and brass are not identical, there isn't a whole lot of difference. For all practical purposes it shouldn't be a problem from a weight standpoint. Changing the profile of the members, as in substituting channel for bar will make a difference. It's fairly easy to calculate, however, by calculating the cross-sectional area of the two shapes and comparing one to the other. I hope this is helpful.

-bill

[pkastagehand]

I'm not sure why I would care unless I was concerned with transporting in a given vehicle or something. It is what it is.

Weight for the loco may be a different story. More weight, better traction.