realizm Posted October 20, 2012 Share #26 Posted October 20, 2012 I never said theres a speed limit on structure. Meh, must be my foggy memory then from another discussion way back in the beginning of summer when I erroneously thought trains do run slower on elevated track. You clarified that for me with the correct information on that. It was a Septa T/O (not on this site) who must have said this putting me under the wrong impression. Link to comment Share on other sites More sharing options...
Eric B Posted October 20, 2012 Share #27 Posted October 20, 2012 In addition, guys, the train can hardly exceed 30 MPH in the tunnel, I'm pretty sure. Yeah; the Montague is slower, and the timers go almost all the way across, Manhattan bound, and it levels off at the bottom (less of a grade), so you would think it would have less timers. It might be to protect the switch leading to the Nessau line. Manny B (both directions) 23 max on the downgrade, select timers clear slower. As was stated before, you don't get the big timer-free downgrade to push 45+ since there's no upgrade to slow you down again. The Manny is faster than the Willie, but not by much. The Willie just looks faster based on how it's built, R160 equipment, and the signals are closer together. Its just like people think the south side of the bridge is faster than the north side, when the opposite is true. There is only ONE timer that clears slower than 22 on the north side, there are a few on the south side. its just the south side has R160 equipment, the north side has 68/A. The Manhattan is faster since they finished rebuilding it. In the 70's, it seemed like it was 15 all the way across. Link to comment Share on other sites More sharing options...
realizm Posted October 20, 2012 Share #28 Posted October 20, 2012 I've noticed that without fail on the Manny B approach to Dekalb and 4th Avenue, the N always seems to make the switch first into 4th avenue as the D train waits (when they are simultaneously on bridge or at the series of switches underground under Atlantic Ave extension approaching Dekalb Avenue.) This seems to always happen without fail no matter what. Unsure as to why. Could be just my timing? but I'm don't think so since I do travel to South BK alot via 6th ave. Link to comment Share on other sites More sharing options...
nu1116 Posted October 20, 2012 Share #29 Posted October 20, 2012 I've noticed that without fail on the Manny B approach to Dekalb and 4th Avenue, the N always seems to make the switch first into 4th avenue as the D train waits (when they are simultaneously on bridge or at the series of switches underground under Atlantic Ave extension approaching Dekalb Avenue.) This seems to always happen without fail no matter what. Unsure as to why. Could be just my timing? but I'm don't think so since I do travel to South BK alot via 6th ave. Because north-bound N always lets the D goes first before entering 36th St, therefore they let N goes first in the south-bound to balance it out. But both trains actually meet more often at north-bound than at south-bound. Link to comment Share on other sites More sharing options...
TheSubwayStation Posted October 20, 2012 Share #30 Posted October 20, 2012 Because north-bound N always lets the D goes first before entering 36th St, therefore they let N goes first in the south-bound to balance it out. But both trains actually meet more often at north-bound than at south-bound. This doesn't sound correct to me. I think it's all based on schedule, not a set "priority" given to certain lines. Link to comment Share on other sites More sharing options...
YankeesPwnMets Posted October 20, 2012 Share #31 Posted October 20, 2012 Faster speeds might make the bridge flex even MORE Link to comment Share on other sites More sharing options...
TwoTimer Posted October 20, 2012 Share #32 Posted October 20, 2012 Its all scheduling, its easy to keep time on the than the . If im not held, i get to Gold St about five minutes early. Link to comment Share on other sites More sharing options...
RTOMan Posted October 21, 2012 Share #33 Posted October 21, 2012 Willy B (both directions) 20mph max from 2/5's up (first timer) all the way down to the beginning to the portal decent (Manhattan-bound), then 13. 20 Max? I dont think so i have done 30 past the resume sign leaving those curves past Marcy going into Manhattan and those timers clear at 18 mph... Going towards Marcy you can do 25 Max till the 1st timer then 18 till about the timer, now before Marcy you got to slow down more. I been going over this bridge since 2009.. Link to comment Share on other sites More sharing options...
Quill Depot Posted October 21, 2012 Share #34 Posted October 21, 2012 That is natural for a suspension bridge. If it didn't flex it would collapse. Link to comment Share on other sites More sharing options...
Vistausss Posted October 21, 2012 Share #35 Posted October 21, 2012 Funny how we got 3 train operators that have knowledge about Manhattan Bridge and they all give different answers lol. Link to comment Share on other sites More sharing options...
DanTheTransitMan Posted October 22, 2012 Share #36 Posted October 22, 2012 Sigh first world problems... Link to comment Share on other sites More sharing options...
RTOMan Posted October 22, 2012 Share #37 Posted October 22, 2012 Funny how we got 3 train operators that have knowledge about Manhattan Bridge and they all give different answers lol. Whats funny about that? Do you have anything to add? Link to comment Share on other sites More sharing options...
Roadcruiser1 Posted October 22, 2012 Share #38 Posted October 22, 2012 Remember there is another factor. The trains cause the bridge to flex too much. Since the tracks were place on the outside the bridge sways at a level that isn't normal. Over time it damages the bridge. Since the tracks were on the outer part of the bridge, passing trains caused the structure to tilt and sway. The wobble worsened as trains became longer and heavier. Eventually over years, when one train moved over the bridge one side would be lower than 3 feet than the other side. Something had to be done. In 1956 at a cost of 30 million dollars a repair program was begun. Still, during these repairs trains could still cross the bridge, but many times one of the tracks had to be closed with both travel lanes reduced to one track, further restricting the number and size of the trains crossing. http://books.google.com/books?id=u-EDAAAAMBAJ&pg=PA126&dq=&hl=en&sa=X&ei=uoxET6-bFcPVgQf2s_i2BA&ved=0CEcQ6AEwBjgK#v=onepage&q&f=true Link to comment Share on other sites More sharing options...
RollOver Posted October 22, 2012 Author Share #39 Posted October 22, 2012 Whats funny about that? Do you have anything to add? He was joking RTOMan. Link to comment Share on other sites More sharing options...
RTOMan Posted October 22, 2012 Share #40 Posted October 22, 2012 He was joking RTOMan. Ah my bad! Link to comment Share on other sites More sharing options...
TwoTimer Posted October 22, 2012 Share #41 Posted October 22, 2012 Wasn't talking bout the untimed areas (Ive gotten it up past 30 after the resume before the timers kicked in (35 on the Manny in a 160), but these guys are talking clearly about the timed areas, not what comes before them Link to comment Share on other sites More sharing options...
StevenFrancis Posted October 22, 2012 Share #42 Posted October 22, 2012 Train drivers are trained to drive the train slowly on the bridge because of two reasons: 1: If that train makes a large bump, it can fall through and kill everyone 2: A bridge will vibrate too much from so many fast traveling trains especially if they are high above the water and they will eventually collapse, thats why before the Manhattan Bridge had several structural issues The on the Manhattan Bridge isn't alone Same thing on the on the Williamsburg Bridge on its two bridges by Broad Channel and the over the Broadway Bridge between 215th and 225th Streets In terms of timing, it is better to use the Manhattan Bridge line because it is a short cut from Canal St to DeKalb Avenue Brooklyn, remember since the is a local service going through Lower Manhattan that is an extra 7 stops, considering the practically goes undeerneath the New York Harbor so that is a long travel time from one borough to the next, so even if the trains run slowly on the bridge, it is still going to be a quicker way. Link to comment Share on other sites More sharing options...
Chargerdodge9 Posted October 24, 2012 Share #43 Posted October 24, 2012 It has to do with weight issues. Link to comment Share on other sites More sharing options...
TheSubwayStation Posted October 24, 2012 Share #44 Posted October 24, 2012 I really think that railfans, because they enjoy "roller coaster" express runs, get under the false assumption that an express train won't save you time unless it goes really fast. It's not the case; going 25 MPH (on the bridge) instead of 30-35 MPH (in the tunnel) doesn't make that huge of a difference. It's still much faster over the bridge. Link to comment Share on other sites More sharing options...
pjbr40 Posted October 24, 2012 Share #45 Posted October 24, 2012 here one way to end this discussion. Why don't you walk on the Manny B. It right next to the track and you will see how fast they go. Link to comment Share on other sites More sharing options...
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