| Welcome to Railway Forum! | |
 | Thank you for finding your way to Railway Forum, a dedicated community for railway and train enthusiasts. There's a variety of forums, a wonderful gallery, and what's more, we are absolutely FREE. You are very welcome to join, take part in the discussion, and post your pictures!
|
|
|||||||
 |
|
|
Thread Tools |
|
#1
2nd February 2017, 10:13
|
||||
|
||||
|
class 90 in tandem
In the gallery is a picture of two class 90s hauling an intermodal.
Why are two needed ? Is it A) one is not powerful enough B) in case one fails C) using the path to relocate one. D) none of the above. 
__________________
Philip. 
|
|
#3
8th February 2017, 16:52
|
|||
|
|||
|
It is usually because a single loco (with Bo-Bo wheel arrangement) can have adhesion problems with heavy loads on steep gradients. Freightliner often uses pairs of Class 86 for the same reason.
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|
Chris G6 UXU Station Manager.