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| Re: Why Do I Call It Bullshit? (1645391) | |||
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Re: Why Do I Call It Bullshit? |
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Posted by Stephen Bauman on Mon Nov 24 19:54:03 2025, in response to Re: Why Do I Call It Bullshit?, posted by steamdriven on Mon Nov 24 14:43:59 2025. Even 3.0 is sad, PCCs did better than twice that. At least make it 4.0, a touch greater than full normal.The PCC's and the Bluebirds used track brakes. There's a serious limitation on braking rate, if braking is applied through the wheels (either with tread or disk brakes). The wheels must maintain adhesion with the rails because the coefficient of rolling friction is greater than the coefficient of sliding friction. I can say the PCC and LRV track braking was not too much if you pay attention I wasn't paying too much attention, when I experienced my single experience of a PCC track brake application. I was riding the Riverside Line on Boston's MTA, back in the early 60's. It went through a golf course. I was standing near the rear doors. A golfer was attempting to make a shot, in the middle of the tracks. The braking threw me against the windshield - half a car length from where I was standing. |
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