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Question

Two technicians are discussing scrub radius. Technician A says that scrub radius can not be measured. Technician B says that scrub radius can not be adjusted. Which technician is correct?

दो तकनीशियन स्क्रब त्रिज्या पर चर्चा कर रहे हैं। तकनीशियन ए का कहना है कि स्क्रब त्रिज्या को मापा नहीं जा सकता है। तकनीशियन बी का कहना है कि स्क्रब त्रिज्या को समायोजित नहीं किया जा सकता है। कौन सा तकनीशियन सही है?

A.

Technician A only

B.

Technician B only

C.

Both technician A and B

D.

Neither technician A nor B

Answer ( Option C)

Both technician A and B

Solution

Scrub radius:

  • Scrub radius refers to the distance between the line through the steering axis and the centerline of the wheel at the contact point with the road surface.
  •  A positive scrub radius (angle) is usually built into most SLA front suspensions, and
  • A negative scrub radius is usually built into most MacPherson strut- type front suspensions.
  • With negative scrub radius, the imaginary line through the steering axis inclination (SAI) intersects the road outside of the centerline of the tire.
  • With positive scrub radius, the SAI line intersects the road inside the centerline of the tires.



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