Krauss Maffei ML4000C'C' trucks have arrived in Californa is a free online Railroad Discussion Forum and Railroad Photo Gallery for railroaders, railfans, model railroaders and anyone else who is interested in railroads. We cover a wide variety of topics, including freight trains, passenger and commuter railroads, rail news and information, tourist railroads, railway museums and railroad history.


Retired RR Machinist
On Monday February 3, we took delivery of the only other existing pair of Krauss Maffei ML4000C'C' trucks. These trucks have the axle gear boxes and intermediate gear boxes that are lacking on the trucks currently under the SP9010. There is a SP9010 web site update available at: and a short video of the event on Youtube at

One of the trucks has only 2 axle gear boxes and will be used as a source for parts and possibly a display item. The complete truck will be installed under the rear end of the 9010 where the intact transmission and Maybach engine reside.

Monday the 3rd was 4 years to the day since we received an email from a gentleman with Colas Rail in the UK advising that their RM63 ballast cleaning machine might be going to scrap and that it had intact Krauss Maffei trucks under it. Monday was also the conclusion of an international effort to acquire the trucks which included several trips to Paris, France by members of our "away team" from the UK and Germany.

We are very grateful to our donors from all over the world who made this acquisition possible.

And now, we will begin dealing with the missing cardan shafts. :)



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Retired RR Machinist
Could you not fabricate a new cardan shaft?

Yes, they can be fabricated. In fact, we have a quote from the original manufacturer in Germany for the 2 shafts. They are surprisingly precise and not something that can be made in our machine shop.

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