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| Re: Covered/uncovered third rail (778895) | |||
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Re: Covered/uncovered third rail |
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Posted by SelkirkTMO on Fri May 1 13:42:43 2009, in response to Re: Covered/uncovered third rail, posted by gbs on Fri May 1 12:21:33 2009. You're welcome ... as to the BMT arrangements (and it wasn't just the Canarsie like that) I'm not entirely sure ... I can *guess* that the BMT came up with a compromise design which allowed both types of shoes to make a good contact, but when you have sled shoes such as depicted, then you can't put up a cover over the third rail itself. Hopefully someone else will paste up the answer to that one for you as this has been discussed before from time to time ... the answer is that BMT, unlike the IRT, saw the issue and came up with a clever solution with their pickup shoe and third rail design whereas the IRT just added a second third rail for the subway type shoes on the els where subway line trains ran ... |
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