Lowest rolling resistance and axle friction
fnarr fnarr.
I think the rakes of 4 or 3 conjoined units are small enough to be shunted as units, and when they need to fix them the use the magic of cranes. [EDIT oh, they are groups of 10......as you were]
*hums Thomas theme tune.....the original one*
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Studebaker Hawk Touch me, I'm thick, Wed 9 Jan 2013, 19:52,
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