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Blog Entry# 4343919
Posted: Jun 15 2019 (15:24)

2 Responses
Last Response: Jun 15 2019 (16:35)
2 Followers
Rail Fanning
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Jun 15 2019 (15:24)  
SOUTHEASTERNRAILWAYWAP7
SOUTHEASTERNRAILWAYWAP7   193 blog posts
Entry# 4343919               Past Edits
***** Tribute to Conventional Loco WAP-4 ******
In our Railways though now we have seen the era of high speed Locomotives like WAP-7 hs , aerodynamic wap-5 etc but
We should not forget that the WAP-4 class of Locomotives are the most stable class of Loco in railways.
Earlier many WAP class of Locomotives were rolled out but they were not as
...
more...
successful as the WAP-4 even all WAP-6 Locos later converted to WAP-4 for their shortcomings.
WAP-4 still is a very dependable & stable coaching Loco and has a very good tractive effort. Rather it is treated as the best Loco for Coaching since 1993 and at present too.......
So, we should be proud of this Loco class for its flawless service since last 26 years.
Thanks to the engineers of CLW for making such efficient conventional loco
Pics of WAP-4 are attached :
Source : wikipedia
Tractive effort Of WAP-4 : Starting : 30,800 kgf (302 kN; 68,000 lbf)
Tractive effort of WAP-7 : Starting : 322.4 kN (72,500 lbf)
Continuous : 228 kN (51,000 lbf) at 71 km/h
Is there any huge difference between the TE of WAP-4 & WAP-7 ????
Probably not
I do not demean the P-7 class they are the present & future of our Railways as per updated coaching loco for 24 coacher train is concerned.
Wap-7 has only the following benefits over P-4
**** Quick Acceleration & Deceleration
*****Regenerative Braking (Power back to OHE)
**** Hotel Load Facility
In our South Eastern Railway 95% mail/express trains still hauled by WAP-4 at 110/120kmph
South Eastern Railway use WAP-7 for very few trains
South Eastern Railway largely depends on their Red Beasts

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Jun 15 2019 (15:36)
mehmoodsayed~
mehmoodsayed~   851 blog posts
Re# 4343919-1              
Agree with u. But still fans of WAP7 is more and infact some people even condemn such a beautiful loco by saying it's old and slow. Hehehehe
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Jun 15 2019 (16:35)
SOUTHEASTERNRAILWAYWAP7
SOUTHEASTERNRAILWAYWAP7   193 blog posts
Re# 4343919-2               Past Edits
In last 9 years I have talked to many Loco Pilots , Assistant Loco Pilots who are in charge of many trains like
Coald Field Express ( Loco :P-7)
AGTL Humsafar Express (Loco : P-4) Ref : /blog/post/4248213
Purulia Express (Loco : P-4)
SRC
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MAS AC Exp (Loco : P-4)
HWH YPR Duronto Exp (Loco : P-4)
Kurla Shalimar Exp (Loco : P-4)
East Coast Exp (Loco : P-7)
Geetanjali Exp (Loco : P-7)
Coromondal Exp (Loco : P-4)
Mumbai Mail (Via Nagpur) (Loco : P-4)
Puri Shatabdi Exp (Loco : P-4)
Place : Howrah , Santragachi
about their experience with WAP-4 & WAP-7 and collect their views
They have told that though P-7 is the latest coaching loco with many advance features still we opt for P-4 for the following
***** Cab heating factor is more in P-7
**** In Rainy Season wheel slipping is a crucial factor for P-7
***** As P-7 is a fully computerised Loco so you have to gain a good knowledge to handle it.....
But they told that P-7 is the advanced coaching loco and future of our railways but P-4 is still very comfortable to a ohuge class of Loco Drivers....
Ref : /blog/post/4248213
In the above referred blog I collected the experience of Loco Pilot & Assistant Loco Pilot of AGTL Humsafar Exp about their preference between P-4 & P-7
The reply from both of them was WAP-4

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