Drum Drive Version Operating Weight : 11.3 TonnesEngine : Ashok Leyland ALHT4CTIC3-BSIII . 101 HP @ 2200 rpm, four cylinder water cooledFrequency : 34 Htz ( High ) 31 Htz ( Low )Amplitude : 0.9 mm 1.8 mmDrum Width : 2100 mmGradeability : 40%Optional : Compaction Meter