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Reply to "How difficult is it to convert trucks to use roller bearings?"

Yes, it is.  I've had to replace solid bearings on heavy models.  Over time the rotating axles will create oblong hole in the journals.  This is especially true if you lubricate without cleaning.  The dirt, dust, grime, whatever, becomes a cutting compound.  The lubrication actually exacerbates the attraction of the contaminants.  Bronze bearing material is better than brass but even the bronze will wear.

Same thing happens with the side rods on steam engine models.  This is especially true with the newer models with very thing rods.  The older KTM models and other early models were far more robust and last far longer.

Jay

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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