by amtrakhogger
atsf sp wrote:When did GN take down the catenary through the cascade tunnel?1956.
You just shook the hand , that shook the hand, that shook the hand of John L. Sullivan!
Railroad Forums
Moderator: Komachi
atsf sp wrote:When did GN take down the catenary through the cascade tunnel?1956.
mtuandrew wrote:In the tunnel itself, there's no reason BNSF couldn't use a conductor rail bolted directly (through insulators) to the ceiling. As long as there's room for a pantograph and there weren't issues with arcing to containers, it wouldn't be a big issue.Just remember any diesel engine is an electric engine (without using some direct drive)
I think GE is best set up for building a new electric locomotive, probably in cooperation with one of the Europeans or Japanese concerns until they finish blowing off the cobwebs from their own collective memory. Their E60s were built up until 20 years ago, and correct me if I'm wrong, but didn't they rebuild the E60PHs into E60MAs? One thing I am sure of, any locomotive will be built on the GEVO frame and will look like most GEVOs out there, unless someone gets a mind to stick a second cab on one. EMD would probably either go to Alstom for designs, eventually getting swallowed, or go back to ABB and build some hybrid of the ALP-44 and SD-70M-2.
jtr1962 wrote:Here's a real world example regarding the benefits and costs of electrification:gotta answer this one...har
http://www.lightrailnow.org/features/f_lrt_2006-03a.htm
Note that this electrification was done in the 1960s, a time when diesel fuel was very cheap, and yet it still paid off. A factor often overlooked is that electric trains can get over the road faster than diesels. This can often mean fewer trainsets to do the same amount of work, even with freight operations. I have little doubt we're well past the point where electrification would pay for itself within a matter of a few years. Cost to electrify the approximately 100,000 miles of track in the US at roughly 3 million per mile is on the order of $300 billion. Spread over ten years, this isn't much over 1% of the federal budget. Not a huge cost by any stretch, yet it would return enormous benefits. My proposal-the feds pick up the tab for stringing wire, the railroads buy the electric locomotives.
joshuahouse wrote:another route that BNSF owns with no tunnels very wide rights of way and a great view of the sun for nearly all its length.But then that route will be over crowded and the Cascade route would render obsolete. The traffic load switch will be too high if a full electricifaction or more to electrification than diesel switch is made.
CN5789 wrote:Maybe one of the deciding factors for the freight railroads to convert to straight electric locomotives in the future could be locomotive maintenance .A straight electric locomotive needs no power assemblies, no lubricating oil, no air filters (except maybe for the air compressor)Very true, but with less loco maintence (but they are both still required to have 92 day inspections), but more infrastructure maintence with the catenary and wires. Tree trimming in particular is a big deal. Trees and branches fall all the time all over the railroda, and if there is catenary, it would land on/in the catenary, cause more troubles.
no need for engine coolant, etc.. Not to mention weather availability with a straight electric is much better. You would no longer have to worry about hot/cold weather issues with a diesel engine.
Jtgshu wrote:how did the Milwaukee Road do it? did they have PGs or no?3kv DC. Maybe small power gaps, but no phase breaks.
Nasadowsk wrote:And let's be realistic - oil's gonna be around 60 - 80 for the foreseeable future...Oil just went above 80$/bbl today.
Komachi wrote:I could also see a special Cascade Tunnel locomotive built that could operate on both cantenary and a third rail setup... assuming that a third rail setup could be implemented in the tunnel.As others said, that'd be highly unlikely. Just on practicality alone a 12000hp (8900kw) electric locomotive would be drawing more than 12000 amps if it were using a fairly standard 750 volt DC third rail system. As jtr said the practical limit to current draw is below 10000 amps, and at more than 12000amps I'd think some damage may be possible were arcing to occur. It'd probably be easier to just cut another notch in the Cascade Tunnel's roof, or undercut the trackbed than to try to make third rail work in there.
mtuandrew wrote:I think GE is best set up for building a new electric locomotive, probably in cooperation with one of the Europeans or Japanese concerns until they finish blowing off the cobwebs from their own collective memory. Their E60s were built up until 20 years ago, and correct me if I'm wrong, but didn't they rebuild the E60PHs into E60MAs? One thing I am sure of, any locomotive will be built on the GEVO frame and will look like most GEVOs out there, unless someone gets a mind to stick a second cab on one. EMD would probably either go to Alstom for designs, eventually getting swallowed, or go back to ABB and build some hybrid of the ALP-44 and SD-70M-2.Both GE and EMD are already making electric locomotives, we just need to reduce the size of the diesel powerplant, stick a transformer on them, and give them pantographs. I know it's not quite that simple, but I find it difficult to believe GE's electrics from more than 20 years ago give them any sort of leg up on EMD. For nearly 20 years now EMD's AC powered locomotives have used Siemens power systems in them, so it's unlikely they'd go to either ABB or Alstom. Just about the only advantage GE has is that it has power infrastructure and electronics development departments under the same roof as their locomotive guys, but an EMD/Siemens consortium accomplishes the same thing. I wouldn't be overly surprised to see Bombardier or Alstom throw their hats into the ring alongside EMD and GE if freight electrification really takes off. It's also possible builders like MPI or NRE could parlay their experience with gensets and rebuilds into converting existing, nearly modern locomotive frames (the SD70MACs?) into nearly new electric locomotives with small diesel generators for light duty off-wire service. Presumably those sorts of light duty service would either include shop moves, yard moves around intermodal yards not equipped with wires, or perhaps switching of enroute industries on non-electrified spur tracks.
Nasadowski wrote:The likely candidates these days are 12kv (11kv / 13.8kv) 60Hz and 25kv (27.6kv) 60hz. 25kv would require bigger clearances, 12kv smaller.I don't see why they wouldn't go for 50kv, especially on lines that are out in the middle of nowhere. The increased distance between substations would likely be a major time and money saver for maitenance crews. Admittedly it could be difficult getting the wire high enough to not zap the top of a doublestack, but I don't see why it couldn't be done. For a transcontinental electrified railroad I find it difficult to believe we'd stick with one power supply from origin to destination. It seems much more likely we'd do 12 or 25kv in the congested areas with vertical clearance issues, and then switch to 50kv for operating through the wide open spaces beyond those areas.