Redesigned mid-weight VMT380 and VMT430 double-drum vibratory compactors are available in two drum widths: 51 or 55 inches. Models VMT380-130, VMT380-140, VMT430-130 and VMT430-140 have new frames, revised hydraulics and improved service access, according to JCB Vibromax, and offer up to 5 percent fuel saving over the models the replace: VMT390 and VMT500. An improved drive system delivers a 20-percent increase in vibration frequency, to 66Hz. Gradeability is improved by 42 percent, and all models use a mechanical gear shift.