I am building a switching layout using kato unitrack. The switches are #4 because I got a great deal on a bunch of them. The engine I have is an Atlas 8-40cw. The coupler does not swing far enough side to side and pulls the car off the track when going through the switches. Is there a way to fix this, or would a shorter engine not do this?
I wonder if Micro Trains sells a replacement coupler that would fit, maybe with a longer shank. Is it possible to trim anything to allow your coupler to swing wider? Just brain stormin'.
Micro-Trains does not do HO couplers, Kadee does. To the OP, you can try a longer shank coupler, however the problem may not go away. I think the issue is going to be a combo of the long loco and short #4 turnouts.
Get a switcher or a shorter four axle road switcher. A Das8 8-40CW is pretty big engine to do switching . Useful in a hump yard, though. Try a Geep or an MP15. Older models like S2/S4 or NW2 by Atlas or Kato are great choices.
Couple things... First, it could depend on the loco. I have a C40-8 that has no issues with a #4. But, I have two AC4400's that will not when coupled together. However, if I use the C40-8 behind one of the AC4400's... I have no issues. Also, it depends on the length of the cars I am coupled to. If I am using a six axle... I try not to have 40 ft covered hoppers right next to it. I try to put a 60 ft box or longer length next to the loco. Second, it could be the switch itself. From my experience, the switches are all not in the same specs. On one #4, I was able to "tweek" it a bit, and all my six axles go through it. Hope this helps! JMS