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400E-121 Armature
400E-121 Armature

Lionel 400E-121 Armature (.125 Dia. Shaft)

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Part Number:400E-121
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Lionel 400E-121 Armature (.125 Dia. Shaft) - When Lionel released its 1931 catalog, they introduced the 400E as “The largest and most powerful model locomotive ever built”. There were four basic motors types used in the 400E (as well as the 385E/1835E and 392E), two of which relied on the type of armature shown above. The earliest motors, 1931 through very early 1933, used an armature with a drum type commutator (SM-92) with matching gear plate and brush plate. In 1933 Lionel changed the armature design entirely, replacing the drum type commutator with the disk type, and gave it part number 400E-121. These early armatures are usually found with a .112 diameter armature shaft. In 1937 Lionel made yet another change to the armature and thus to the brush plate and gear plate by increasing the armature shaft diameter to .125 diameter. The new armature took on the old 400E-121 part number and the early version was given part number 400E-121X. This is not an MTH reproduction armature!

You need to make sure you properly identify the armature you have and if you don't have one in the motor you are rebuilding, then ask for help. 

We will purchase your old motor or just your old armature - ask us, we will even send you a prepaid USPS label to send it to us!

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