Home · Maps · About

Home > SubChat
 

[ Read Responses | Post a New Response | Return to the Index ]
[ First in Thread | Next in Thread ]

 

view flat

Re: LIRR East Side Access

Posted by WillD on Mon May 22 16:51:53 2006, in response to Re: LIRR East Side Access, posted by Dutchrailnut on Mon May 22 08:02:26 2006.

edf40wrjww2msgDetail:detailStr
fiogf49gjkf0d
Alright, maybe I'm confused on that subject. I could have sworn it was you who said they wouldn't have dynamics in third rail, back in the thread relating to the design of the M8s, but I can't find the thread. It'd help if the MTA would actually post the specifications, but I guess that'd be too much trouble. Whatever the Connecticut Commuter Council has on their site seems to be the fluff stuff on how it should be formatted and such.

However, why are they considering track brakes on the M8s? Can this be something other than the electromagnetic bars of metal with graphite shoes on the bottom which trolleys and CTA L cars use? Why would they want track brakes on a commuter railroad EMU? It's listed as Alternative 14 on page 15 of the M8 "specifications" the CCC posted, below stuff like auto-dimming and occupancy sensing interior lights and HVAC units (actually probably a good idea...), and above 'Operation west of NYC' with the 12kv 25hz compatibility specified (and with no mention of two transformers) and reads as follows:
Alternate #14 –Articulated Track Brakes for M-8:
The Contractor shall furnish the incremental costs for installing articulated track
brakes operated from the Low Voltage Distribution Network in response to
commands from the Propulsion Control Logic Units. The articulated track brake
shall have replaceable shoes.
Is this just something if the builder eliminates the 'cheek' brakes and goes with an all-tread based braking system? Or would this have something to do with the dynamic braking system or lack thereof?

Responses

Post a New Response

Your Handle:

Your Password:

E-Mail Address:

Subject:

Message:



Before posting.. think twice!


[ Return to the Message Index ]