Railroad Forums 

  • Thumping sounds in 567 powered locos......

  • Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.
It is currently Tue Apr 23, 2024 11:39 pm

Thumping sounds in 567 powered locos......

Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.

Moderator: GOLDEN-ARM

 Reply

 #437957  by gp9rm4108
 
The sound you are inquiring about is indeed the engine turning over.

 #437996  by dieselsmoke
 
gp9rm4108 wrote:The sound you are inquiring about is indeed the engine turning over.
That's a pretty broad statement, but I thought we have already established that it's from the compressor

 #438672  by SOU2645
 
It should be noted that the only 645 powered units I have heard make this sound are MP15DC's and the like. Any AC/DC units with seperate starter motors (GP38-2's etc) do not make that sound when they start up.
Larry
 Reply
 Return to “EMD - Electro-Motive (Progress Rail, General Motors)”
 - All times are UTC-05:00 -