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Post by Deleted on Sept 23, 2019 17:56:09 GMT
Hopefully this is the right place to post this. I recently acquired a 1681E very cheap, because it didn't run. Is there a way to wire the motor direct, without the E unit connected, to make sure the motor is functional. The E unit looks to be in good shape, but I would like to test the motor, by itself, to eliminate where the trouble lies, whether the motor or E unit. Any help would be appreciated.
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Post by Deleted on Sept 25, 2019 8:08:31 GMT
Is there anyone who knows how to o this? I would like to get this working again.
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Post by Country Joe on Sept 25, 2019 15:12:06 GMT
I believe it can be done but I don't know how. Try posting this question in a new thread in the main O Gauge section. More guys might see it there.
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Post by Country Joe on Sept 25, 2019 15:23:08 GMT
I found this. Hope it helps.
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Post by Country Joe on Sept 25, 2019 15:26:04 GMT
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Post by Deleted on Sept 25, 2019 16:19:55 GMT
Thanks for the link, and it should get things working.
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Post by Deleted on Sept 30, 2019 0:35:23 GMT
It is very easy to run a lionel motor without an E-unit. Power from the center rail runs to either brush and from the other brush to the field (stationary) coil. The other end of the field coil is always grounded through the frame and wheels to the outside rails.
Motor doesn't run in the forward direction simply reverse the brush connections. This is all the e-unit does.
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Post by Deleted on Sept 30, 2019 13:52:21 GMT
While we're on the subject of bypassing E-units I thought I might talk about Marx motors.
Lionel and Marx Post War motors are fundamentally the same. They are called series wound motors and run on either AC or DC. The rotor winding (Rotating assembly) is in series with the field winding hence the name.
The main difference between Marx and Lionel is that Marx grounds the rotor windings through one brush (permanent connection to frame and outer rails) while Lionel grounds the field winding. Reversal is accomplished the same way on each motor by changing the relationship of the two windings, rotor and field. by the E-units. Marx of course only has forward and reverse positions on its E-unit (Marx simply calls their unit a reversing unit) and Lionel has the slightly more sophisticated three position E-unit which includes a neutral position.
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Post by Deleted on Oct 3, 2019 18:16:00 GMT
A follow up, that the motor worked fine, and the problem was a “filthy” E unit drum. All is well now.
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Post by Country Joe on Oct 3, 2019 18:43:15 GMT
A follow up, that the motor worked fine, and the problem was a “filthy” E unit drum. All is well now. That's good news. I love a story with a happy ending.  |
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Post by kars2026 on Feb 10, 2021 7:20:35 GMT
I bought a Lionel 1668 on eBay at a good price. The listing said it would not run, but the light worked and the motor hummed. When I got the engine, it checked out to have a short in the e unit. I disconnected the e unit and connected the wires as follows.
One brush should be connected to one end of the field winding. The other brush should be connected to the pickup. The other end of the field winding should be connected to the locomotive frame.
This engine runs great, it is fast and pulls 4 passenger cars and a baggage car. The only draw back is it only runs forward. But who cares.
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