Glad to see your employer decided to purchase new vehicles based on a bogie design and not like what's now in fashion over 'ere: trams with fixed undercarriages (Citadis, Combino-II and "Combino-3" aka Avenio) and their corresponding atrocious running characteristics

 

Hmm, just thinking: given the similarities between the NGT12 and this new NGT10*, one could swap each of the short 'floating' sections of the NGT12 and replace them with the centre sections of the NGT10. That'll probably end up as a single vehicle right on/over the limits for BoStrab (75m-ish)

 

*I doubt that's only the electronics and drive-train, surely the same goes for mechanical parts like the articulations, doors, drivers controls, etc.

Vincent, as a matter of fact, a Combino from Erfurt - adapted to our gauge, of course - had been tested ahead of the procurement of what would eventually be the NGT12. The gist of the findings from this trial was that it did ride alright - as long as no curves needed to be negotiated. Which is to say, this evaluation had quickly led to the fundamental decision not to procure any trams with fixed running gears as these would most likely never be a good match for the parameters of our network!

 

However, while the drive units and indeed the controller handle are essentially identical between the NGT10 and NGT12, I don't think the types as a whole are sufficiently similar to each other for the intermediate segments to be easily swapped. Essentially, the NGT10 is a unique design tailored for Leipzig, and not really similar even to other variants of what on paper would be the Solaris Tramino family. The Braunschweig Tramino, for example, is an entirely different vehicle, and does, in fact, utilise independent wheel running gears. Likewise, the Tramino variants operating in various Polish cities are not significantly similar to the Braunschweig and Leipzig variants.