Kato vs Tomix couplers uncoupling.

[katoftw]

Using a Kato EH500 with Tomix Koki 107 car.  The arnold coupler on the EH500 is about 1mm higher than the Kokis.  So have 2-5 minutes, they work themselves apart, then EH500 one going upwards, and the Koki one going downwards and uncoupling.

 

Solution?  Looks like the couple on the EH500 could be lowered as there is space available.

 

p.s.  Wasn't happening with 9 cars being pulled, but 16 it was.

[Spaceman Spiff]

Have you tried roughing up the surface of the coupler with a small file. That sometimes adds enough friction to prevent the couplers from moving up and down.

 

Spiff

[katoftw]

Sounds like a plan, thanks for the reply.