PCC Emergency Braking

[Jim Holland]

Greetings!

	A discussion on another list about track brakes / emergency 
braking on PCCs brought up the point that a buzzer sounded if the track 
brake were activated to warn the operator.  Because of rail wear, 
operators were discouraged from using the track brakes.

	If I remember correctly, a buzzer sounded on all PRCo PCC 
air-cars when the brake was depressed enough to activate emergency 
braking; the buzzer was not just because the track brakes were activated.
	On the all-electric 1700 series, the gong sounded when the brake 
was pushed into emergency; there was no buzzer.

	And if I remember correctly, the track brake could come into play 
even in standard service braking, but this was just a mild application 
and not full strength.

-- 
James B. Holland
       PITTSBURGH RAILWAYS COMPANY (PRCo), June of 1949 -- June of 1953
       To e-mail *off-list,* please click here: mailto:pghpcc at pacbell.net
N.M.R.A.  Life member #2190; http://www.mcs.net:80/~weyand/nmra/