Bogie Open Hopper Wagon with Side-Bottom Discharge & Heavy Load --- The heavy loaded version of BOBYN for transportation of ballast has been designed and developed by RDSO to run up to maximum speed of 75 kmph in empty and loaded condition. The wagon design incorporates CASNUB-22 HS Bogie, Non-transition CBC and single pipe graduated release Air Brakes. Spring O-14 & I-14, S-4. Capacity - 66.02 Tonnes. Type - BOBYN-22.9