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# Ground Speed of Track Laying Vehicle

IMPERIAL

The ground speed of a track laying vehicle is the hydraulic motor RPM times the circumference of the driving sprocket divided by 168 times 2 times 3.1416 times the overall gear reduction of the power train. Where:

V = Ground speed in MPH

RPM = Rev. per min. of engine

C = Circumference

C = N x L

N = No. of teeth in sprocket

L = Length of links in inches

R = Overall gear reduction

Example:

Find the ground speed in miles per hour where the motor speed is 1800 RPM, the number of teeth in the sprocket is 41, the length of link 8 inches, is 61 to 1.

C = 41 x 8 = 328 METRIC

The ground speed of a track laying vehicle is the hydraulic motor RPM times the circumference of the driving sprocket divided by 168 times 2 times 3.1416 times the overall gear reduction of the power train. Where:

V = Ground speed in KPH

RPM = Rev. per min. of engine

C = Circumference

C = N x L

N = No. of teeth in sprocket

L = Length of links in millimetres

R = Overall gear reduction

Example:

Find the ground speed in kilometres per hour where the motor speed is 1800 RPM, the number of teeth in the sprocket is 41, the length of link 200 mm, is 61 to 1.

C = 41 x 200 = 8200 