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दूरी नही मंज़िल भारी, साथ हो जब मेट्रो हमारी - Mushfique Khalid

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Blog Entry# 2396949
Posted: Sep 02 2017 (09:43)

13 Responses
Last Response: Sep 02 2017 (16:33)
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Sep 02 2017 (09:43)  
ForeverLoveforERSWDM3A~
ForeverLoveforERSWDM3A~   956 blog posts
Entry# 2396949              
For a train running only on Diesel traction with 24 coaches, which Loco do you prefer?
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NO vote
WDM-3A/3D Twins (DG-3A also)
32%
9
WDP4/4B/4D (DG-4/4D ALSO)
68%
19

8 Posts

2280 views
3

Sep 02 2017 (12:07)
BangaloreMail^~
BangaloreMail^~   26791 blog posts
Re# 2396949-9              
I know that. But twin alcos give more HP output for acceleration. That is why many 24 coachers were on alco twins. Take Karnataka Express. It used to get alco twins till MMR. One alco- around 3000 HP which means 2 alcos will be around 6000HP. But many alcos are aging and due to excessive smoking, EMDs are given for some 24 coaches. The concept of two alcos hauling a 24 coach was started for the purpose of better acceleration.
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Sep 02 2017 (14:22)
DrSwaroop^~
DrSwaroop^~   109895 blog posts
Re# 2396949-10              
Not at all that is why many 24 coach links of SCR r changed from EMD to ALCO twins like
SC - TPTY Narayanadri Superfast Express
SC - HWH Falaknuma Superfast Express
KCG - SBC Superfast Express
KCG
...
more...
- CTO Venkatadri Superfast Express (23 coaches)
Ajanta Express - Hauled by ALCO twins since 2010
SC - YPR Garibrath Superfast Express (13 coach train) MLY WDM3À twins r link only for better acceleration

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Sep 02 2017 (14:32)
Shashank^~
Shashank^~   7685 blog posts
Re# 2396949-11              
I never said anything about acceleration. It is a fact that EMDs are more efficient than ALCos. The list you just mentioned had their links changed bcoz SCR wants to take the maximum utilisation of old WDMs which are getting overaged and are about to be scrapped.
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1

Sep 02 2017 (14:56)
A2Z~
A2Z~   17505 blog posts
Re# 2396949-12               Past Edits
* Under the mission raftaar, IR propose to increase the speed of freight as well as express trains by 25kmph.
* Increasing the hauling horse power to trailing load ratio is one of the several steps envisaged to achieve the goal.
* Twin WDM3 locos give 6000+hp which is higher than the 4500 hp delivered by single WDP4 loco although with higher fuel consumption. A much faster acceleration and lower journey time is possible.
*
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more...
The twin loco is especially useful for 24 coach express trains operating on saturated single line sections which need frequent stoppages for giving passage to other trains. Twin locos help in quicker clearance of the section and help increase avg. speed of the train & line capacity of the section.
* In a nutshell, on saturated rail line (as is case with most ot IR lines), twin loco is preferable for quicker acceleration and on non saturated tracks, WDP4 is better for better fuel efficiency & lesser pollution.

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Sep 02 2017 (16:33)
Abhishek Dubey   16640 blog posts
Re# 2396949-13              
Then its correct
Still acceleration lgbhag barabar h hoga
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