• LSRC C425M question

  • Discussion of products from the American Locomotive Company. A web site with current Alco 251 information can be found here: Fairbanks-Morse/Alco 251.
Discussion of products from the American Locomotive Company. A web site with current Alco 251 information can be found here: Fairbanks-Morse/Alco 251.

Moderator: Alcoman

  by EDM5970
 
One other thing that was done at Hornell was the elimination of the crankcase exhauster. No more motor- GE used an exhaust eductor to generate a negative pressure in the crankcase, which Alco was very against even trying in earlier days. I got this tidbit, and a few others, from a gent who was with GE at Hornell and later with LSRC.
  by erikalco251
 
Did the LSRC C425m have air starters
  by EDM5970
 
I think they would have to have air starters. Unless you have one of the dash 8 or dash 9 GEs, alternators don't spin over very well on batteries. Although I did know at one time an ex-NYC U-30B that had a pair of 36 VDC Leece-Neville starters, wired in series, and a big ring gear-
  by Bright Star
 
The eductor style crankcase exhauster was also used on the D&H 251 powered RS shop rebuilds.

On the Dash-7's, the aux gen and exciter were set up so that they serve as the starter motors. Perhaps the D&M units used this arrangement.
  by mandealco
 
I haven't checked specifically on photos, but I don't think the D&H / GB&W / D&M rebuilds have air starters. The main spotting feature of Alcos with air starters is a third air tank. If you check photos of both sides of the rebuilt 424s and 425s, look for a third tank.
Cheers
Steve
  by PEIR
 
Only two tanks on the engineers side of the units so no air start on the D&M/LSRC units. This has proven to be a very interesting thread.