Cast Iron / Gunmetal

[Jon LawesParticipant @jonlawes51698]

I think the Cast Iron Vs. Gunmetal debate has been done to death with relation to cylinders, however I've got two trailing trucks for the 3.5 Britannia as I procurred two partial batches of castings. Bearing in mind it sits right below the firebox (if that makes a difference), which casting (GM or CI) would you use for the trailing truck? The cost isn't a consideration here as I already have both sat in front of me. To clarify by trailing truck I'm specifically referring to the pivoting casting which carries the axle boxes under the cab.

Thanks for your help, I do appreciate it.

[Jon LawesParticipant @jonlawes51698]

[HopperParticipant @hopper]

I'd use cast iron because it might be a bit more resistant to heat and gritty ash particles.

[Jon LawesParticipant @jonlawes51698]

Of the two castings I have the cast iron one seems a little nicer, which ever one I don't use I'll sell (although I doubt there is much market for individual castings!).

Thanks, I'm surprised this wasn't a subject that caused more debate, I really must try to be more controversial!

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