whats the difference between both pantograph. why does engineers switch the pantograph up in push mode and the other pantograph in pull mode? if you understand my question
My best guess is to prevent the pantograph from snapping at high speeds. I don't know personally the exact reason why NJ transit is so picky about pantograph operation on there electric locomotives.
Its not so much to prevent it from snapping (if it breaks, it wil break, no matter what direction), but usually the "Rear-most" pantograph (in relation to train direction) is raised so if that one DOES break, it will hopefully not get yanked over the top of the locomotive and damage the roof equipment, or get tangled up in the second pantograph.
@NJTFan78 There is no difference. Most trains fitted with two pantographs normally run with the rear one operating so that if it breaks or snags on the wires (pretty rare) it will not damage the leading one by falling onto it or bringing down the wires on top of it. that way the train may still remain mobile.
Also, it was once thought that having the rear one raised provided better contact performance due to reduced aerodynamic interference. In reality there isn't much difference.
The aem 7's and the alp 44's are similar. Except the alp-44 has the ditch lights near the couplers and they have different radiator grils on the side
donsande2 1 month ago
what is the difference between the ALP 44 and the AEM7???
blessedbrotha 6 months ago
ok but their both built by bombardair
Mushroom3727 2 years ago
The first 15 ALP-44 locomotives were built by ABB Traction of Sweden. However Bombardier Transportation took them over in the late 1990's.
Eric
EMK623 2 years ago
@Mushroom3727
No
The AEM7 was built by EMD and designed by ASEA
The ALP-44 was built by ABB
Great0ne1 2 years ago
asea brown boveri emd is built the freight gp40 which njt uses to pull passenger cars and built and design are most likely the same thing.
Mushroom3727 2 years ago
ABB EMD? No they didn't, EMD built the original GP40 which was used for freight.
Besides isn't the locomotive in this video an ALP-44? (ALP-44M Technically)?
Great0ne1 2 years ago
not alot of Vs
hhp8 2 years ago
next station stop "Little Silver"
pjbagnano 2 years ago
whats the difference between both pantograph. why does engineers switch the pantograph up in push mode and the other pantograph in pull mode? if you understand my question
NJTFan78 3 years ago
My best guess is to prevent the pantograph from snapping at high speeds. I don't know personally the exact reason why NJ transit is so picky about pantograph operation on there electric locomotives.
Eric
EMK623 3 years ago
Did you know that the ALP-44M electric locomitive looks similar to the AEM-7?
cornrowcity 2 years ago
@cornrowcity they are aem7s
Mushroom3727 2 years ago
Know they're not AEM7s. ALP-44s and AEM7s are two totally different things. Besides the title of this video says it's a ALP-44
Great0ne1 2 years ago
Nevermind Mushroom3727. You're right the ALP-44M looks similar to the AEM7. But they're not the same thing.
Great0ne1 2 years ago
does NJT run any AEM-7s?
Skiier1000 2 years ago
NJT can't run AEM7s because they don't own any AEM7s
Great0ne1 2 years ago
Its not so much to prevent it from snapping (if it breaks, it wil break, no matter what direction), but usually the "Rear-most" pantograph (in relation to train direction) is raised so if that one DOES break, it will hopefully not get yanked over the top of the locomotive and damage the roof equipment, or get tangled up in the second pantograph.
cab4 2 years ago
@NJTFan78 There is no difference. Most trains fitted with two pantographs normally run with the rear one operating so that if it breaks or snags on the wires (pretty rare) it will not damage the leading one by falling onto it or bringing down the wires on top of it. that way the train may still remain mobile.
Also, it was once thought that having the rear one raised provided better contact performance due to reduced aerodynamic interference. In reality there isn't much difference.
soundseeker63 1 year ago
nice horn
Great0ne1 3 years ago
Yes, another video!
trainriders1031 3 years ago
Cool, I have this unit for msts
alx2925 3 years ago
look like a professinally made video.
Did you even think of making an MSTS Route, named Long Branch?
tramrunner 3 years ago
Looks like a keystone train with the front pantograph.
jesuschristsmysavior 3 years ago
Great video. Having the wrong pantograph up doesn't seem like it would be good for the wires or the engine...
Comwhiz2002 3 years ago
There are occasions when NJ Transit does that. Normally its because either the engineer forgets to change it or the other pantograph doesn't work.
Eric
EMK623 3 years ago
Looks like an old RVL set with a few Comet Vs mixed in there.
scotttheniceguy 3 years ago
nice to se another video up!great job!
trainutjob 3 years ago