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Technical specifications

RD12-90 RD12A-90

Operating data 

Operating weight w/ ballast lb 2,689 2,689
L x W x H  in 71.8 x 40.7 x 90.5 71.8 x 40.7 x 90.5
Drum width  in 35.4 35.4
Drum diameter  in 22 22
Side clearance Right in 1.7 1.8
Side clearance Left in 3.5 3.5
Curb clearance Right in 15.7 15.7
Curb clearance Left in 8.2 8.2
Centrifugal force Dynamic (Front Drum) lbf 3,400 3,400
Frequency  Vpm 4,200 4,200
Linear force Static (Front/Rear) lb/in 28 / 41 28 / 41
Linear force Dynamic (Front) lb/in 96 96
Travel speed Forward mph 5.4 5.4
Travel speed Reverse mph 5.4 5.4
Surface capacity Area ft²/h 84,281 84,281
Gradeability Maximum % 30 30
Turning radius Outside in 96.5 96.5

Engine / Motor 

Engine / Motor type  air-cooled, 2-cylinder, gasoline engine air-cooled, 2-cylinder, gasoline engine
Engine / Motor manufacturer  Wacker WM 650 Honda GX 630
Displacement  in³ 39.9 42
RPM / speed Operating Speed rpm 3,100 3,100
Operating performance Max Rated at 3600 rpm hp 20.5 20.3
Fuel consumption  US gal/h 1.35 1.6
Tank capacity Fuel US gal 6.1 6.1
Tank capacity Water US gal 26.4 26.4

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