All,

Getting back into Large Scale after a long absence.  Most of my "old" Bachmann Big Haulers in storage have plastic wheels.  I want to convert to metal wheels for the weight factor.

I see Bachmann makes 2 models of general purpose metal wheels.  #92421 (31.00 mm dia.) "large" and #94222 (24.5 mm dia.) "small".  Any help on if there is a general rule as to where to use large or small wheels other than look and match size?

I bought a pack of "small" wheels at a local craft type store and fit them on an older Big Hauler gondola.  It looks like the gondola was originally supplied with larger plastic wheel sets.  The car rolls well with "small" wheels but I can't tell how it will navigate a switch or cross over as my Aristo Craft track is packed away far back in the kneewall .

Any advice on the issue would be appreciated as these "non blackened" metal wheels aren't cheap and before I invest some righteous bucks on replacements, I'd like to make an informed decision based upon someone with knowledge of the products.

Thanks, and Happy New Year to all,

TACMAN52