Motor test bed #1- Undecorated GP38 (Download for $)

This engine has been tested extensively during the Athearn tune up series Described in another post. The motors tested here are as follows: 1. Athearn blue box Stock rectangular motor with brass fly wheels #1 2. Helix Humper Can motor #3 3. Mashima 1824 can motor with brass fly wheels #2 In most cases, there …

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