Engine storage

[laz 57]

They come in boxes that are well protected with foam so it should be ok, run the smoke fluid out though, or don't fill it before you store it.
laz57

[GPJ68]

Kind of a simple-minded question, but is it preferable to store a boxed engine/loco sitting upright, or on it's side? I've got limited storage space for large plastic tubs under my train table, and I can fit a few more engines in the tub if I stack the boxes on their sides rather than upright. Any reason to NOT sta***hem long-term sideways?

GPJ