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Old 12-28-2019, 04:54 PM   #1 (permalink)
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Default Only runs backwards

Have a 2117D lgb. Broke it out for Xmas and it only runs backwards. Forwards it hops about an inch stops, repeat. Almost like it shorts out. then continues. Like I said, runs all day backwards. ??????
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Old 12-28-2019, 06:51 PM   #2 (permalink)
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rkbcjb;

Probably not the right answer, but from the number you gave, it appears to be a steam locomotive model. Check to make sure all the drive wheels have their bolts on the crankpins. Had an S gauge K4 that threw a bolt out of a drive wheel, and that caused it to run only in reverse. Just a hunch.

Hope you find the solution, David Meashey
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Old 12-29-2019, 07:01 AM   #3 (permalink)
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When changing direction esp. the LGB engines the axles do move sideways.



So, one direction will be ok, the other direction would have side rod or valve gear locking up.
I check for the forward wheel to have a thin head hex screw, esp moguls.
I use pliers and tighten the rivits as they do get loose.
I check the quartering of the wheels.
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Old 12-29-2019, 11:04 AM   #4 (permalink)
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!2 volts hooked up to the slide pickups, the engine runs fine forward. No jamming of any kind
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Old 12-30-2019, 05:07 AM   #5 (permalink)
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I had an engine that acted like that, the problem ended up being the motor brushes. Hooking up power to the sliders means there's not much load on the engine and it may run fine. My engine had a lot of hours on it though, takes a long time to wear the motor brushes down to where they cause a problem.
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Old 12-31-2019, 03:00 PM   #6 (permalink)
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With another engine running on the track, drop the troubled engine on with it and both engines stop and start. Run them backwards all day. Acts like a short. But only going forward?
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Old 01-01-2020, 07:22 AM   #7 (permalink)
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If it stops running forward, is the headlight still on? If still on it is not the power source.
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Old 01-01-2020, 10:48 AM   #8 (permalink)
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Quote:
Originally Posted by rkbcjb View Post
!2 volts hooked up to the slide pickups, the engine runs fine forward. No jamming of any kind
Okay, I'm coming from a NON electrical world, so this may not help, but I find that I am lacking information.
When you say "hooked up to slide pickups", was the loco upside down, or right side up?
Was it sitting ON track?
Did it go in BOTH directions when hooked up like this?
Happy New Year,
David Leech, Delta, Canada
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Old 01-01-2020, 02:13 PM   #9 (permalink)
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Maybe start here:

https://forums.mylargescale.com/29-b...lgb-2117d.html
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Old 01-03-2020, 07:18 AM   #10 (permalink)
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Parts are now available for the 2117D and I have repaired many in 2019. In 2008 parts were very scarce as the part pallets from LGB were not yet inventoried (over 100 pallets I was told),and now Marklin is making some extra parts for the present runs of engines. Biggest issues will be parts for the split case motor blocks as these are no longer being made and will get more and more scarce as time goes by.
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