Until Z-Modellbau took the challenge to manufacturer a Z Kof II with a Motor (!!!!) our choice was limited to mechanical rolling non-motorized Kof’s by Schmidt and Railex.
The Railex example here is cast brass (red paint scheme lettered for DB with open cab and black running boards) with fine detailing inside the cab, it was a very good example of a Kof II that Railex produced along with variations of this type.
Headlamps are non-working in both locomotives but Z-Modellbau rendered them white in perfect circles versus Railex which are hand-painted silver.
What to do with a non-working model train: use it of course! Before brushless motors manufacturers of Z gauge had certain limitations placed on their ambitions. Z gauge is already small in size so therefore modeling the smallest prototypes yield problem after problem including where to put a motor and gears. The solution with their larger steam locos and tenders was locating the drive mechanism within a passenger or freight car hence they were called “ghost cars” because they became hidden locomotives, but they allowed the locomotive to pull cars so to speak figuratively not literally. I collect Railex, they are beautiful and fun to behold. As for ghost cars I have never owned one, I understand they can be temperamental and many I see for sale are offered “not working”. Ghost cars can be built by industrious engineers with a clever creative side which describes most of us Z-scalers, if you choose the to take the challenge the rewards are big and stalled trains from 19th century Germany may come to life on your railway line.
Photo: no couplers on Railex, Z-Modellbau uses Marklin compatible couplers of their own design that unobtrusive in this small loco
Now the time is ripe for ambitious manufacturers to create smaller locos in Z that function, today brushless motors from Switzerland are available in a variety of small sizes so releasing new locos with this motor should be easy? Wrong. From idea to final market ready model is a design and manufacturing “Matterhorn” so to speak. Having the idea is the first step followed by researching the prototype’s blueprints, putting into scale, designing the parts and assembly. Every step is time consuming and difficult with a fair share of creative thinking, ingenuous problem solving and sheer expertise in tooling and production. The latter always flabbergasts me, how can anyone be gifted with such abilities that tiny tiny tiny details appear in such small locos at the same time concealing their build.
With the Railex Kof which is cast with add-on parts in cast brass the model is beautiful with a securing plate screwed to the undercarriage that simply holds the wheel-sets on: simple and beautifully designed. This example does not have couplers thus making it a stand alone model train.
Photo: Railex Koff hauling livestock boxcar both lettered for DB
The Z-Modellbau Kof II for NSB has an enclosed cab with glazed windows and their own unique design for a Marklin compatible coupler. A 10 volt coreless motor runs the show including gearing that allow smooth acceleration and deceleration but without working headlamps. Headlamps are beautifully modeled as if lit. Locomotive is weighted and balanced due to its metal nature throughout so pulling power is very good.
Photo: Railex Kof II is true to prototypical scale giving the boxcars the impression of great size
Small locomotives serve very important functions including shunting and branchline while others not covered here serve MOW (Maintenance of Way) service, they (speeders) are still smaller than the kofs with one purpose: track inspection.
Siding: seen here are the two livestock boxcars comprising the Marklin 2 car freight set: 86602. For the first time this car type features interior detailing in the form of gates, it also includes laser cut build kit for loading ramp and movable fence sections.
