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Wed Nov 22, 2017 13:14:14 ISTHomeTrainsΣChainsAtlasPNRForumGalleryNewsFAQTripsLoginFeedback
Wed Nov 22, 2017 13:14:14 IST

Blog Entry# 1949983
Posted: Aug 03 2016 (00:19)

9 Responses
Last Response: Aug 06 2016 (01:33)
  
Rail News
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Other NewsCR/Central  -  
Aug 02 2016 (21:04)   TALGO TRAIL RUN.
 

SPECTACULAR INDIA^   140 news posts
Entry# 1949983   News Entry# 275741         Tags   Past Edits
Report for the first leg of time validation trials of Spanish Talgo Train from New Delhi to Mumbai Central
• Talgo special Train departed from New Delhi at 19:55 hrs.
• It travelled through the same route which is followed by the New Delhi – Mumbai Rajdhani Express train No. 12952. It also observed the same permanent and temporary speed restrictions as well as the sectional speeds of Rajdhani Express Train No. 12952.
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The existing Rajdhani Express takes 15:50 hrs from New Delhi – Mumbai Central.
• Talgo train because of heavy rains enroute and due to point failure at Mathura Junction, reached at 11:36 AM at Mumbai Central. (15:41 hrs)
• There was water logging beyond Surat between Udvada – Vapi – Bhilad section, which considerably delayed the movement of trains as speed restrictions had to be imposed for safety reasons.
• Accordingly beyond Surat the Talgo train could not implement its trial schedule because of the reason beyond their control.
• In anyway from Delhi – Surat Talgo train took around 2 hours less in comparison to Rajdhani Express.
• The Talgo train fully succeeded in its maiden trial between New Delhi & Mumbai.
• But for the reasons mentioned above it would have taken approximately 3hours less than the Rajdhani train in reaching Mumbai Central. It means that it would have reached in 12 hours 47 minutes as claimed and planned.
• Average Running Speed of Rajdhani Express (New Delhi-Surat) – 89.76 kmph
• Average Running Speed of Talgo Train (New Delhi-Surat) – 106.52 kmph

4 posts - Wed Aug 03, 2016

  
1305 views
Aug 04 2016 (08:00)
For Better Managed Indian Railways~   1933 blog posts
Re# 1949983-5            Tags   Past Edits
In this respect, it can be said that all the train rakes running on the are I Rlys tracks including the premier ones like Rajdhani/ Shatabdi/ Duronto etc are under utilised !! The culprit here is the slack time given to the trains so as to accommodate large number of passenger/freight trains jostling for "green Signal" to move along in the limited Indian railway Network, and to facilitate the regular track maintenance activities.
If all trains get green signal through out their run about 20-35% of the running times can be saved for most of the express trains on IRly network.
Mumbai
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Rajdhani enjoy topmost priority (minimum slack time, interesting to compare with NZM-TVC Raj) where as the Talgo train, I guess should have got through green signal for NDLS-BCY journey (w/o any provision of slack time)
Talgo was expected to do NDLS-BCTin 13 hrs against 16 hrs of Raj i.e. a gain of 3 hours For same priority, technically only time Talgo train can save is faster acceleration/ deceleration at stops and speed restrictions due to very small train load (about half hour?) and higher speed maintained on curves (say another half - to one hour). Rest of the time it was supposed to gain i.e. 1.5-2 hrs should be due to difference in slack time.
One burning example in this respect is, HWH-CSTM Duronto, which had same operational speed (105/110kmph) as other super-fast trains like Gnaneshwari/ Geetanjali but much higher avg. speed of 75kmph against just 55-60 kmph for the other S/F trains on the route. On the inaugural run (yr 2009) the Duronto (the pet train of RM) was given through green signal and the avg. running speed between 2 stops (excluding stoppage time) was around 90-95 kmph, where as the same for other S/F trains was 60-80 kmph, indicating how the slack time given to trains drastically increase the journey times.

  
1085 views
Aug 05 2016 (09:32)
BJ~   2552 blog posts
Re# 1949983-6            Tags   Past Edits
Then Why IR need t import Talgo Technologies, if talgo need only green signals to achieve the timeframe, our train sets can achieve the same. carrying capacity is different factor, coaches of our rajdfhani can be reduced to meet the rate of acceleration.

  
987 views
Aug 05 2016 (23:45)
For Better Managed Indian Railways~   1933 blog posts
Re# 1949983-7            Tags   Past Edits
Solution for acceleration is to for double headed trains or more powerful loco, not reduction of coaches. Talgo train can be considered for import on the ground of their tilting capability which enables them to be operated at 25-30 % higher speed than normal trains plus their light weight aluminium construction with speed potential of 250 kmph .

  
2798 views
Aug 06 2016 (00:47)
DhnEcr~   5921 blog posts
Re# 1949983-8            Tags   Past Edits
LHB itself being German technology is 200 kmph supported but our tracks infra dont support it, Talgo can run same speeds at same infra thanks to its tilting technology.

  
2789 views
Aug 06 2016 (01:33)
For Better Managed Indian Railways~   1933 blog posts
Re# 1949983-9            Tags   Past Edits
LHB coaches(Max speed 200kmph) are made of Stainless steel which makes it heavier than technologically more advanced under trial Talgo coaches (Max speed 250kmph) made up of aluminium.
A shatabdi was planned to be introduced between Mumbai & Goa on the completion of 150 years of Indian Rlys with operational speed of 150 kmph (150yrs..kmph the same figure!) and a jouney time of 6hours flat. Accordingly a speed trial was conducted. Unfortunately there was an accident in the same year on KRly,and the high speed train plan was dropped as a safety measure. LHB coaches had been tested at 179 kmph max during a trail run as claimed by the then MD Mr. Raja Ram.
"A
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trial run which I conducted successfully between Madgaon (Goa) and Roha (near Mumbai) in 2003 averaged 150 kmph continuously over a 400 km stretch, the longest in rail history then," Rajaram recalled.
"The train slashed travel time to a mere three-and-a-half hours, from the nearly nine hours that superfast trains normally take to complete the 442-km journey.
"On a particular stretch, the General Electric-designed diesel loco effortlessly touched 179 kmph until I asked the driver to slow down," said Rajaram, who rode with the driver.
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