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Indian Railways: Divided By Zones, United By Railfans - Karthik

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Blog Entry# 1855003
Posted: May 20 2016 (00:09)

6 Responses
Last Response: May 21 2016 (00:44)
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May 20 2016 (00:09)  
 
guest   6387 blog posts
Entry# 1855003               Past Edits
#railwayengineering
The Body of WAG-9 Locomotive has resemblance with the following two types of Locomotives:
1 IORE
2 HXD3B Locomotive Used in China Railways
IORE:
Iore,
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often stylized IORE, is a class of 26 electric locomotives built by Adtranz and its successor Bombardier Transportation for the Swedish mining company LKAB's railway division Malmtrafik. The class is a variation of Adtranz's Octeon modular product platform, thus related to Bombardier's later TRAXX platform. The locomotives haul iron ore freight trains on the Iron Ore Line and Ofoten Line in Sweden and Norway, respectively. The 8,600-tonne (8,500-long-ton; 9,500-short-ton) 68-car trains are hauled by two single-ended Co′Co′ locomotives, each with a power output of 5,400 kW (7,200 hp). Each operates with 600 kilonewtons (130,000 pounds-force) tractive effort and has a maximum speed of 80 km/h (50 mph). Delivery of the first series of 18 locomotives was made from 2000 to 2004, and they replaced some of the aging Dm3 and El 15 units. In 2007, eight more vehicles (4 double units) were ordered, with production to be completed by 2011, by which time, another four double units were ordered. These units are scheduled to be delivered from 2013 to 2014.
Link: click here
HXD3B Locomotive Used in China Railways :
HXD3B(Chinese:和谐电3D型电力机车) is a class of electric locomotives for heavy freight service built by Bombardier Transportation and CNR Dalian Locomotives. The Ministry of Railways of the People's Republic of China (MOR) ordered 500 locomotives in February 2007 for €1.1 billion (US$1.4 billion) from Dalian Locomotives and Bombardier Transportation, with Bombardier's share amounting to €370 million (US$480 million).[3] The first unit, HXD3B0001 was delivered on 29 December 2008 in Dalian, the entire order of 500 machines will be delivered by the end of 2011.
Link: click here
Attached Images Link:
IORE Locomotive
click here
HXD3B Locomotive Used in China Railways
click here
Please note that "FOR PERFECT RESEMBLANCE" it is with HXD3B Locomotive Used in China Railways as seen from the Picture and it is also to be noted that in HXD3B Locomotive Used in China Railways has "DISC BRAKES" though it is a Co-Co Locomotive. So there is very much scope of "DISC BRAKES" for both WAG-9 & WAP-7 as because there is very much Similarity in the Livery & Bogie of both of these Locomotives.

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May 20 2016 (14:19)
Satpura Hills   634 blog posts
Re# 1855003-2              
WAP7 is the worst locomotive imo
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May 20 2016 (14:24)
guest   6387 blog posts
Re# 1855003-3              
why ?
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May 20 2016 (14:30)
Satpura Hills   634 blog posts
Re# 1855003-4              
Dont paint a rosy picture of axle hung traction
in fully suspened ones, your rotor dynamics unbalance is large and if fails frequently
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May 20 2016 (15:21)
TheMadrasMail~
TheMadrasMail~   6349 blog posts
Re# 1855003-5              
Actually, my description of axle hung traction was rather negative, not rosy at all. :)
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May 21 2016 (00:44)
indian railways   7174 blog posts
Re# 1855003-6               Past Edits
Absolutely. Disc brake is no big deal for a Co-Co.
There are two more limitations.
1. "3-axle bogie and wheelbase length" : The nature of our P-way is curvy wavy in many places. A loco with 3-axle bogie and long wheelbase may easily lose stability over there at higher speeds. Locos with 2-axle bogies do not have this limitation. For freights, 3-axle bogies are still fine because the basic requirement is higher tractive effort output and not top speed. But the Europeans use Bo-Bo + Bo-Bo too, combining the benefits of TE
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and HP with the factors mentioned.
Simple example : Consider a bus and a car. Given a sharp turn, which one of them would be able to negotiate better? Answer is car. The bus has a longer wheelbase and the radius for turning is greater. So, the bus will be forced to slow down to minimum speed for turning.
2. "Bogie design" : LHB coaches have Y-shaped FIAT bogies which are more effective in absorbing the shocks and vibrations when compared to a coach with a flatter frame (conventional). Similar logic is applicable for locos too. Design of bogie and suspension is a crucial factor in determining the loco's high speed capabilities.
"Unsprung mass" also matters!
WAP5 has got fully suspended Traction Motors. Motors are suspended on the underframe, reducing the Unsprung mass.

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