ATSF/BNSF GP30u front light

[Green_Elite_Cab]

May I add another question that pops up with the GP30u related text "The Blomberg trucks were modified by removing the clasp type brakes and converting to a single shoe."

I did notice that on GP40-2 vs. older GP38 engines too. How does that work? If the brakes are not on both sides the bearings of the axis have to manage the full load of applied break shoes of many tons.
Can someone explain the background and implications of that design change?

The Blomberg B trucks are older models. the Blomberg "M" is the newer type. I suspect that 8 brake pads were not necessary, and that more modern locomotives have greater control over their own operation (such as -2 modifications on EMD locomotives), saving the railroad money in brake pads. I think the "M" type is also lighter and less complex to maintain.

That said, both of either type tend to show up on locomotives even today, some being rebuilt with the old types.