I couldn't get the above link to work but hopefully this one will .file:///C:/Users/discopotato03/Downloads/Final%20-%20Edward%20Vieusseux,%20UGL%20-%20Development%20of%20the%20Flexicurve%20locomotive%20bogie.pdf
Nope , search Goninan Flexi Curve .
Anyway an interesting read , the guts of it is :
Will fit existing C44ACi units without significant mods .
Easier to maintain .
400 Kg per bogie lighter than existing Pedestal ie roller blade bogies .
Better ride .
No Pedestal liner/axle box stiction .
Equates to lighter loco mass and you'd think increase the legal fuel load by ~ 1000L .
I like the idea of using traction rods to transmit drive forces rather than axle boxes pressing directly on pedestals .
I am no bogie engineer but I tend to think that high load/friction forces (stiction) may reduce the wheelsets ability to follow track profiles under heavy loads on curves and grades .
EMDs HTSC2 bogies under SD70ACEs look to work in a similar fashion but are not steering/semi steering trucks .
I'd be interested to hear M636s opinions on this .
Maybe EDI has found a way to get the C44ACi closer to if not better than GT46ACe's traction performance .