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Re: Technical Discussion About Axle Journal Bearings

Posted by Jeff H. on Mon Oct 13 02:14:12 2008, in response to Re: Technical Discussion About Axle Journal Bearings, posted by Train Dude on Sun Oct 12 22:00:04 2008.

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What I'm saying is that inboard vs outboard has nothing to do with
the bearing design. It's obviously the same weight on the same
number of wheels.

But an inboard truck requires less metal than a comparable outboard
truck sized for the same carbody weight.

AFAIK, inboard technology was originally developed during the period
where the rail industry was attempting to borrow automotive
technology to make the cars lighter, faster and cheaper. The
biggest initial application was in PCC trucks.

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