Braking Limits

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Dj Hammers:

I have noticed that you get Passenger Discomfort if you brake too hard.

Why doesn't everyone list the "braking limits" of the train they usually use.

I am using Straphangers 10 Car R32 on the Lefferts Shuttle.
The most brake that I can take is B5, and if It is REALLY needed, short bursts of B6. That's good anyway because B5 can stop you perfectly at the 10 sign if you apply it as you enter the station at 30MPH. Anything above B5 pisses of the passengers.

Kamakazi:

In general:

The more faster you are going, the more heavier brakes you can apply as it won't cause much jerks but a smooth deacceleration. The more slower, the less heavier brakes you should apply.

R-Deuces:

This is as real as it gets when it comes to braking and what not.

Acceleration and braking go hand in hand - especially when it comes to the subway. If you come into a station "wrapped up"  (with the MC in parallel), you are definitely going to need to use more brake to slow down.

What I usually do after reaching a station - depending on the conditions - is to "knock off" (put the MC into neutral) and letting inertia take you in. I'll give everyone a few scenarios...

> Coming in on a flat surface
This is the most common. Again, this is co-dependent on how fast you have entered the station. The point of this is to not put the brakes into full service. On 4 point systems, take no more than 3 points and release the brakes gradually as you reach your desired speed. On eight point systems, you should use no more than 6 points and then release accordingly. You should not have to take a point on the master controller as inertia should be doing the work for you.

Example station: Myrtle Avenue on the (L)

> Coming in on a down-grade
This is a bit difficult, especially considering the fact that you are accelerating into the station. Make sure that your master controller is in neutral and that you are ready to start braking as soon as you enter into he station. Once into the station, apply sufficient brake as discussed in the previous scenario until you come to a complete stop. This sill require a full service brake application to prevent the train from moving but, do so only when you have stopped at the marker. DO NOT engage your emergency brake.

Example station: 161 St. / Yankee Stadium <B>, (D) or Metropolitan Avenue / Grand Street (G)

> Coming in on an up-grade
The key in this scenario is to keep moving toward the marker. The rate of deceleration will depend on the percentage of grade and the weight of your equipment. Use these 3 dependent variables to your advantage as this will help you make a smooth stop at the marker. In this scenario, you have the option of taking 1 point on your master controller should you feel that you are slowing down too rapidly. Braking should be relatively easy so, use your brakes at your discretion. Using more than 50% of your brakes may slow the train down too much and you may stop short of the marker. In such cases, take only 1-2 points on your controller and use your brakes accordingly.

Example station: 14 St. (F)

> After a curve / wheel detect / station time
Depending on the sharpness of the curve, you will have to adhere to a speed limit of 10-20 MPH or 16-32 KPH. You need to adhere to this speed in order to keep to your schedule and obey signals. Proceed into the curve slowly - with your master controller in neutral - then take two points to accelerate into the station at the apex of the curve, keeping in mind your speed limit. In these situations, you should also be prepared to encounter signs that denote station time and wheel detect. Proceed at the posted speed and use a sufficient amount of brake in order to make it to the marker. You should not have to use more than 2 points on a 4-point brake system and a maximum of 4 points on a 8-point brake system in order to stop smoothly.

Example station:
Curve: Canal Street (N), (Q)
Wheel Detect: Switch after Canal Street - southbound (C), (E)
Station time: Utica Avenue (A), Dekalb Avenue (B), (Q)

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