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Blog Entry# 3387836
Posted: May 06 2018 (18:54)
5 Responses
Last Response: May 07 2018 (02:31)
5 Responses
Last Response: May 07 2018 (02:31)
Why is the rear pantograph up and not the front one?
From what some explained - if the front one is up, then the sparks keep falling on top of the front cabin and heats up the cabin. So the rear is up.
Not sure if that is right, since I don't know how much sparks keep falling.
But that's one explanation...
more...
From what some explained - if the front one is up, then the sparks keep falling on top of the front cabin and heats up the cabin. So the rear is up.
Not sure if that is right, since I don't know how much sparks keep falling.
But that's one explanation...
more...
Pull and push concept is used for locomotive.
Various reasons may exist behind it. But the main reason is that When you pull some thing towards your direction more power is required with high friction.
But when you push some thing from behind ,friction is comparitively lower then pulling.
In case of locomotive Front panto means
Pulling...
more...
Various reasons may exist behind it. But the main reason is that When you pull some thing towards your direction more power is required with high friction.
But when you push some thing from behind ,friction is comparitively lower then pulling.
In case of locomotive Front panto means
Pulling...
more...
Thanks for the explanation.
But both front or rear are pulling the rake. So aren't both undergoing the same level of work (friction as you said)?
But both front or rear are pulling the rake. So aren't both undergoing the same level of work (friction as you said)?
it always seemed like some form of convention rather than something based on scientific principles.
kind of like why India and Europe uses 50 Hz power, while USA and some other countries use 60 Hz; there are reasons that are often offered for the choice, but look deeper and you realize that is nothing more than following of tradition that was established long ago :P
kind of like why India and Europe uses 50 Hz power, while USA and some other countries use 60 Hz; there are reasons that are often offered for the choice, but look deeper and you realize that is nothing more than following of tradition that was established long ago :P
In principle there is no difference between both. Technically, both pantos are equally well suited for moving trains and there is no advantage one gives over the other in terms of power or effort.
The most commonly agreed upon reason is that if the pantograph gets entangled with the OHE and breaks off, the rear panto will not cause any damage to the rest of the roof-top equipment and on most occasions, the loco will be able to move ahead with it's front panto. If the front panto breaks off, however, there will very likely be a lot of damage to the rooftop equipment rendering the locomotive useless.
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The most commonly agreed upon reason is that if the pantograph gets entangled with the OHE and breaks off, the rear panto will not cause any damage to the rest of the roof-top equipment and on most occasions, the loco will be able to move ahead with it's front panto. If the front panto breaks off, however, there will very likely be a lot of damage to the rooftop equipment rendering the locomotive useless.
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more...