wb47 posted:Working on my new RI E7. Was there any rhyme or reason for a RR's decision to go with or without the front coupler?
Don't know what you are referring to but, by ICC/FRA law, ALL locomotives MUST have a front coupler!
Dedicated to passenger service, mixed use?
Again, by law, ALL locomotives MUST have a front coupler!
I have seen some pics going both way. Thanks
No, what you have seen are diesels with a sliding cover OVER the front coupler, usually back in the 1930s/1940s. Eventually, most railroads eliminated the sliding covers over the front couplers, or those locomotives with the "retractable" coupler/draft-gear arrangement, had the retractable assembly fully extended and locked in place, so they didn't have to fool with it anymore.