Reply to "METRA to Purchase SD70MACs for commuter service."

Dominic Mazoch posted:

Advantage of the A-A-1 traction motor arrangement for the AC truck vs A-1-A for the E units?

Completely different truck designs. The old/original Blomberg A-1-A truck (yes, the same Mr. Blomberg that later designed the famous 2 axle truck with 40" diameter wheels for the FT units) had only 36" diameter wheels. The HTC-R "Radial" truck is far superior, and due to its "steerable" design reduces flange contact/wear on curves, not to mention far superior adhesion for high traction situations.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
330-757-3020

www.ogaugerr.com
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