The coach is a four-wheel self-propelled vehicle capable of being driven at either end. It can travel at any speed up to 30 m.p.h. when recording and is capable of speeds of 55 m.p.h. when not recording. Cant is measured by comparing the position of one of the axles with a datum provided by the gyroscope mounted immediately above this axle. Measurements of curvature, gage, and cant are obtained as a.c. signals from synchro type pick-offs. These signals are linearly demodulated and the resulting d.c. signals applied to high sensitivity mirror galvonometers. In addition to the main measurements, the record includes the speed of the vehicle, distance marking, facilities to indicate events such as stations, and space for making notes.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1959-8-21

Media Info

  • Features: Photos;
  • Pagination: p. 49-50
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00037999
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 4 1994 12:00AM