Topics

16

Transit / Norfolk and Western J Class 611 Manassas Excursions 2015

« on: June 06, 2015, 08:31:12 pm »

This morning, in Manassas:
[youtube]http://www.youtube.com/watch?v=6AaEHtTah9E[/youtube]

17

Content Development / Pinning Down Acceleration Curves For in OpenBVE Using Only Weight & Power

« on: May 26, 2015, 06:50:35 am »

[youtube]http://www.youtube.com/watch?v=dV38HDgBQa8[/youtube]
No more excuses for out of whack train acceleration physics lol

Video Transcript:
So in the game of OpenBVE, there has been a bit of uncertainty about what is the
proper and accurate acceleration curve for NYC subway rolling stock. Sometimes the
trains are programmed too slow, sometimes they are too fast. Well, no more. Here
and now, I will show you exactly how to calculate a particular train's maximum
acceleration curve JUST by knowing what the rated power (kW) and weight (m) values
are.

Eventually, I will run through all of the Post-Unification stock and nail down their
individual max acceleration curves, but for the sake of this demonstration, I will
only focus on 4 trains (R1, R32, R142A, R160), one from each generation of stock (plus
an IRT NTT train).

Above, I did state that you only need weight and power rating to calculate the max
acceleration curve, but really, those are the constant variables. If you are to do
the calculations, you need to also know the changing variable, which is either
rated acceleration, or rated tractive effort. Since we know that the maximum starting
acceleration of an NYC subway car is 2.5 mph/s (4.0225 km/h/s) for all stock R10 and
newer, and 1.75 mph/s (2.81575 km/h/s) for R1-R9 stock, all our variables are accounted
for. So let's begin with the R32.

For the sake of clarity, I will try to show both
metric and imperial measurements. I will include a conversion table here:

Weight:
1 Kilogram = 2.2046 lbs

Power:
1 Kilowatt = 1.34 hp

Speed:
1 mph = 1.609 km/h

Acceleration:
1 ms^2 = 3.6 km/h/s = 2.237 mph/s

For each of the calculations, I will be using the values from a single car (not a
full train set) since each car is motorized; acceleration curves will be constant.
This is not the case for the R142, R142A, and R188, which do have unpowered trailer
trucks that must be accounted for. Those values will have to be calculated by train.

Now that we have those values for the R32 nailed down, here are the two important
websites that you need to remember... not so much the second one, but the first one.
We will use the first website to figure out what is the starting tractive effort that
is required to achieve an acceleration rate of 2.5 mph/s for the R32. The second site
is simply used to convert between meters/second squared and km/h/s, since the first
site calculates acceleration in meters/second squared.

After inputting the numbers, we have our starting tractive effort for the R32.

Recall in a different tutorial for TS2015, where I show how to modify train physics
for acceleration, I give you the method to determine the relationship between power
and tractive effort. Let's see if I can pull that up real quick... Well, it seems I did
not save that text file; oh well. I'll just type out the formula really quick again:

Tractive Effort (kN) = [Power (kW) * 3.6] / Speed (km/h)
or as an example (ACS-64 TE @ 201.125 km/h given 6400 kW):

114.56 = (6400*3.6)/201.125

114.56 kN of TE is produced by the ACS-64 @ 125 mph given a power rating of 6400 kW.

Now, given that equation, we can use it to determine the maximum speed at which the R32
can sustain 2.5 mph/s acceleration given its power rating of 115 hp per traction motor.
See if you can follow along...
By plugging in the power rating per car and the calculated starting tractive effort,
we can calculate the point where continuous max power is achieved; at any speed point
lower than the calculated point, acceleration will remain @ 2.5 mph/s, while at any
speed point higher than the calculated point, power will be constant, but acceleration
will decrease.

You now have all you need for coding in acceleration physics in openBVE. Let me
demonstrate. I have the R32 already loaded into the train editor...

You will notice that after the constant acceleration range has been set, you still need
to determine how quickly the acceleration drops off. For the sake of this demonstration
we will set balancing speed at 55 mph (88 km/h). You must manipulate the e(2.0) value
so that the right end of the acceleration curve meets the bottom of the graph @ the desired
X-value (in this case, 88 km/h). A higher e value will result in a lower balancing speed,
and vice versa. That is basically what you need to do. I will now perform the calculations
for the remaining stock I have listed below using the same process. Just follow along
if you need more clarification.

In actuality, it is possible to calculate the speed point where near 0 TE is generated,
which would indicate the actual balancing speed, minus the train resistance. In order to
properly determine balancing speed, you must calculate the train resistance value (kN).
But that is for another time.

Now, GRANTED, these calculated values are for the MAXIMUM *POTENTIAL* acceleration curve.
The actual acceleration curve in real life can be programmed at lower values by
the Transit Authority (to conserve power / enhance operational safety margins). This is
especially true of the NTT rolling stock.

Thanks for watching, hope this was informative and that you guys learned something
new today =)

18

Other Projects / Metro-North Railroad Bombardier M7 / Kawasaki M8 Frankentrain Pack Released

« on: January 04, 2015, 05:35:45 pm »

[youtube]http://www.youtube.com/watch?v=XpG_hqbN4ts[/youtube]
Metro-North Railroad Bombardier M7 / Kawasaki M8 Frankentrain Pack for OpenBVE.

Ever wanted to operate an M7 train on a route with overhead wires but no third rail? Now, with the advent of the M8 single trailer car, you can =D

This train is highly detailed and advanced. Refer to the M7 readme for all the relevant info.

Credits list:
-Sounds: Fan Railer (Mike Kam)[general sound programmer] & William McMorris [high quality announcement chime, buzzer sound, & combined throttle/brake controller "click"]
-Engineer's Cab (3D): Manuel Alejandro Mejias Palacios
-Exterior model: Manuel Alejandro Mejias Palacios
-Physics: Fan Railer (Mike Kam)
-Project coordinator & BETA tester: Fan Railer (Mike Kam)
-Invaluable reference material (for physics): Gregory Grice

IMPORTANT: Please do not redistribute this train pack. This pack is only to be made available via sanctioned sites, ie, BVEstation & Fan Railer's Mediafire page.

Download link: http://www.mediafire.com/download/2x6iww6gk2biz78/Metro-North+Railroad+M7-M8+EMU+Frankentrain+Pack.7z

19

Other Projects / SEPTA Hyundai Rotem Silverliner V Development Thread

« on: December 25, 2014, 12:49:34 am »

[youtube]http://www.youtube.com/watch?v=Yqm7aVzpwtU[/youtube]
[youtube]http://www.youtube.com/watch?v=gJdO_ovKdGM[/youtube]

So here is one of the next major development projects that will be started in the first half of 2015: The Silverliner V EMU built by Rotem for SEPTA (also known as SEPTIC lol). For now, since the SLV exterior is currently non-existent, the M7 exterior will be used as a placeholder.

The first video video showcases the unusually high rate of starting acceleration (for a commuter rail EMU) that the SLV is spec'd with: 3.0 mph/s from stall speed up to 30 mph. With jerk factored in, you will notice that it takes just about 12 seconds to accelerate from 0 to 30 mph. In addition, in the second video, we test the total time it takes for the train to reach 100 MPH, which is not long at all; about 1 minute and 15 seconds. Also, deceleration is tested, and  with a rate of 3.0 mph/s, we are able to bring the train to a full stop from 100 MPH in just 35 seconds. Very impressive performance.

Compare this to the acceleration specified by the RFP issued by SEPTA when these cars were still in procurement: https://web.archive.org/web/20070927022208/http://www.septa.org/business/over25000/silverliner_v/SLV_TS_AUG_05_r0.pdf

20

Photography / LIRR Bombardier M7 EMU Cab View (Jay Interlocking - East River Tunnel 4 Portal)

« on: November 29, 2014, 12:45:01 pm »

http://www.youtube.com/watch?v=N3Yanz7zjdU#

21

Photography / Amtrak and NJT Thanksgiving Day 2014 Railfanning @ SEC Junction and Metropark

« on: November 29, 2014, 12:20:54 pm »

Secaucus Junction:
http://www.youtube.com/watch?v=OtCuxZMspeY#


Metropark (watch this one on YouTube for the timestamps in the description):
http://www.youtube.com/watch?v=N7qS6H--cmc#


Riding Northeast Regional 156 Business Class from Metropark to Penn Station New York:
http://www.youtube.com/watch?v=vEwyEUu3bBA#

Photo album:
http://www.facebook.com/media/set/?set=a.854971427888143.1073741851.100001258801227&type=1&l=c74db574a4

22

Train Simulator 2016 / TS2015: Union Pacific FEF-3 844 Video Thread

« on: November 06, 2014, 06:42:09 pm »

Here she is, in all of her wondrous glory =P
http://www.youtube.com/watch?v=4YJaI2zpzUg#
http://www.youtube.com/watch?v=41PgK_b12to#
You can purchase this here: http://store.steampowered.com/app/277740/
Much more action to come in the near future

23

NYCTA Projects / NYC Subway Westinghouse Electric 1447J DC Traction Motor Sound Pack Released

« on: October 30, 2014, 10:52:36 pm »

OpenBVE HD EXCLUSIVE: New York City Subway Westinghouse 1447J DC Traction Motor Sound Pack Release
This is the OpenBVE New York City Subway Westinghouse Electric DC Traction Motor Model 1447J Sound Pack.

I took the time to review some real life video and pitch match the motor sound with regard to speed. Also made some volume adjustments. Exterior station stop clips first, followed by a cab ride clip.

Good for use in the following:
R32
R42
R44
R62A
R68
R68A

If you are an OpenBVE developer, you'll know what to do with this lol.

Have fun and enjoy =)

Reference videos:
New York City Subway HD: Bombardier R62A Westinghouse 1447J DC Traction Motor Dynamic Brake Sound

- R62A interior

New York City Subway HD EXCLUSIVE: R68A B Train Railfan Via Brighton Express w/ SAAHC (RFW)

- R68A interior

[HD] R68a - B Express train Entering Newkirk Plaza (Manhattan Bound)

- R68A flying into Newkirk Plaza

Download link: http://www.mediafire.com/download/ewkn41c1pom1928/OpenBVE+New+York+City+Subway+Westinghouse+Electric+DC+Traction+Motor+Model+1447J+Sound+Pack.7z

24

Train Simulator 2016 / Official Railworks: Train Simulator 2015 Videos and Screenshots Thread

« on: September 18, 2014, 09:49:00 pm »

So TS2015 came out today, along with a few other DLC goodies:
[youtube]http://www.youtube.com/watch?v=Vp9rV4dqDaI[/youtube]
[youtube]http://www.youtube.com/watch?v=_NsYuiJs1TA[/youtube]
Stay tuned for more action in the very near future

25

Other Projects / LIRR EMD DE30AC / DM30AC & Kawasaki C3 Bilevel Development Thread

« on: August 20, 2014, 06:54:36 pm »

EDIT: Preliminary version of this train is released at the downloads section: http://www.bvestation.com/download/108

As always, we'll start with the sounds first:
[youtube]http://www.youtube.com/watch?v=u5F8HRfWyYk[/youtube]

26

Photography / Railfan Harassment at Northport LIRR

« on: August 14, 2014, 11:13:25 pm »

http://www.youtube.com/watch?v=0HDIeH6b4lg#
If you can, watch this on YouTube and read the description; it provides more context to the actual situation.

27

Transit / A Shave and a Haircut? On the Subway? Hell Yea XD

« on: August 13, 2014, 11:33:17 pm »

New York City Subway HD EXCLUSIVE: Friendly Horn Exchange Between R68A B Train and R160 Q Train

28

NYCTA Projects / NYC Subway New Tech Train (NTT) Propulsion Update Packs Released (8/10/14)

« on: August 10, 2014, 05:24:57 pm »

http://www.youtube.com/watch?v=OgLGcEYdQYs#

Current as of 8/11/14. There are two distinct packs for release here; one for regular OpenBVE users, and another specifically for developers.

Pack One for regular users (http://www.mediafire.com/download/hmk9nzucc7xcnb4/OpenBVE_Fictional_NYC_Subway_R153_Trains_with_NTT_Propulsion_Pack.7z):
OpenBVE New York City Subway Fictional R153 With NTT Propulsion Mods (Alstom ONIX, Bombardier MITRAC 1508C, and Siemens SITRAC) Pack:

This is a sound and physics pack ONLY; I take no credit for the R153 exterior or cab, which was created by:
Original Train Programming - Blue18 (Lakiem Williams)
Original Train Sounds - Blue18 (Lakiem Williams), PuertoRican88 (Michael Garcia)
Exterior/Interior View - PuertoRican88 (Michael Garcia), Rikabs, D60HFMAN (Michael Bradshaw), Nyctrman (Randy Puello)
Train Cabs - Emil Luk (Mr. Railfan), Max Diamond (MC Hammers)
Sign animations - CT1660 (Chris Torres), Nightmare403 (Takeem Carter)
Additional Contributors - rstar (Armondo Toribio)

All sounds pulled from existing OpenBVE rolling stock; I take no credit for sound recording.

Motor sound timing and physics edit credits to me, Mike Kam (Fan Railer)

To install, simply copy and paste the folder found in the .rar file into your openBVE train folder.

This pack comes with the R153 using the R160A Alstom cab & equipped with the following propulsion:
-Alstom ONIX propulsion (R160)
-Bombardier MITRAC 1508C propulsion (R142A, R143, R188)
-Siemens SITRAC propulsion (R160B Siemens)

The trains come in 2, 4, and 8 car sets for all three propulsion sound sets.
Trains also come with new or old brakes, as specified by the folder title.

Enjoy =)


Pack Two for developers (http://www.mediafire.com/download/78c68n1egwudati/OpenBVE_New_York_City_Subway_NTT_(R142,_R142A,_R143,_R160,_R188)_Propulsion_Developer's_Pack.7z):
OpenBVE New York City Subway NTT Propulsion Mods (Alstom ONIX, Bombardier MITRAC 1508C, and Siemens SITRAC) Developer's Pack:

All sounds pulled from existing OpenBVE rolling stock; I take no credit for sound recording.

Motor sound timing and physics edit credits to me, Mike Kam (Fan Railer)

This pack comes with:
-Alstom ONIX propulsion (R142)
-Alstom ONIX propulsion (R160)
-Bombardier MITRAC 1508C propulsion (R142A, R143, R188)
-Siemens SITRAC propulsion (R160B Siemens)
-New and Old Brake Shoe sounds

You will find that the train.dat and sound.cfg files are already programmed and preconfigured so that you can simply drag drop into any pre-existing train that you have.

Enjoy =)

29

NYCTA Projects / R142A, R143, R188 AdTranz / Bombardier MITRAC 1508C Motor Sound Adjustments

« on: August 08, 2014, 07:10:36 pm »

So I also recall someone asking if I was going to work on the R142A/R143/R188 propulsion. Once again, working with what's given to me, I try not to disappoint. The old motor sound code:


The new motor sound code:


Motor sound timing reference video; shot today:
New York City Subway HD EXCLUSIVE: Kawasaki R188 7 Local Train Speed

OpenBVE work in progress video (95% complete):
OpenBVE HD EXCLUSIVE: Kawasaki R142A R143 R188 Bombardier MITRAC AC Motor Sound Timing & Pitch Tweak

Enjoy =)

30

NYCTA Projects / R160B Siemens Propulsion Sound Update WIP

« on: August 06, 2014, 10:12:40 pm »

I recall someone asking if I was going to tackle the Siemens propulsion? Well, I try not to disappoint:
OpenBVE HD EXCLUSIVE: Kawasaki R160B Siemens Propulsion Sound Update Preview Video

Once this is finalized, I'll move onto the R142A/R143/R188 Bombardier/Adtranz propulsion. That one by far will be the most difficult.... or will it??