Discussion relating to the operations of MTA MetroNorth Railroad including west of Hudson operations and discussion of CtDOT sponsored rail operations such as Shore Line East and the Springfield to New Haven Hartford Line

Moderators: GirlOnTheTrain, nomis, FL9AC, Jeff Smith

  by DutchRailnut
How streamlined is a M-7 not much believe me.
http://community.webshots.com/s/image8/ ... AFt_fs.jpg

  by Sean W.
I got a "403 Forbidden" message.

  by DutchRailnut
must be your carrier , I got no restrictions on my pictures. its posted on my photo site:

  by mncommuter
This link seems to work:
http://community.webshots.com/photo/130 ... 6531HrVAFt

So, do you think this flat faced design deteriorates performance?

  by DutchRailnut
after years of streamlining everything do you think a design like that helps energy use ??

  by 7 Train
Not as streamlined as a R40 Slant or Acela HHP-8.

  by Nasadowsk
The flat front sure isn't helping. But:

* Speeds are low anyway, thus aerodynamics are less of an issue.
* Undercar airflow would hamper things worse, with all that equipment hanging under there.
* Intercar gaps are an issue too.
* Weight is more of an issue w.r.t. energy use.
* A more aerodynamic car could be designed, but would likely cost more plus more to maintain, plus not have whatever advantage the LIRR and MN get out of married pairs.
* A train's long and slender anyway, thus theroetically should be well off (Though yes I've read that long freights with large numbers of open doors on boxcars and such are infact a source of drag).
* I'm not aware of any wind tunnel testing of rail equipment in the US, and even overseas, it's mostly for high speed services and turned towards noise reduction.

The gains in a reduced Cd wouldn't be much, and not useful at lower speeds, likely. And yes, the HHP-8s are supposedly more aerodynamic, but I think it's more a styling decision than anything real - note that there's always the opposite end of the locomotive in back and the Amfleet behind it.

It shouldn't be too hard to make up a model of an M-7, etc and ind tunnel test them, though...