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Heenan and Froude Ltd.,
5th April 1968, Page 84
5th April 1968
Page 84
Page 84, 5th April 1968
— Heenan and Froude Ltd.,
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Worcester, Worcs.
The brake tester produced by Heenan and Froude Ltd, incorporates sets of rollers, the centre distance of which can be adjusted between 17in. and 23-1in. A pilot valve operated by a hand lever applies air to a pneumatic cylinder which releases or inserts locking pins to free the rollers for adjustment or to lock them in their running position. Two cradle-mounted geared electric motors drive the rollers through chains, and torque reactions are measured by hydrostatic load cells. Pedal pressures are measured by a oressometer.
A simple nomograph is supplied which enables brake efficiency to be ascertained when the braking force has been obtained, given