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Meter wide track. There were some DD trucked units sent down to South America at one time.
Oops..did not see this prior post
https://ogrforum.com/t...72#43806663321185172
anyway whats up with the 3 rail track..narrow and std gauge?
Nice video. What's up with that line? it looks like it was former electrified territory. Did that rr pull a "Conrail"?
That looks like narrow gauge? What's meter wide? I'll have to do a search...
Engineer-Joe posted:That looks like narrow gauge? What's meter wide? I'll have to do a search...
OK Joe, from High School, how long is one meter?
3.28 feet?
& I had to search for that answer!
Dominic Mazoch posted:Meter wide track. There were some DD trucked units sent down to South America at one time.
DD45M I think they were called. SD45's with meter gauge (DD35?) trucks?
Perhaps Jack had some dealings with them when he was at EMD and can shed some factual info on them them since my "knowledge" comes from reading "Our GM Scrapbook" many years ago.
Rule292 posted:Dominic Mazoch posted:Meter wide track. There were some DD trucked units sent down to South America at one time.
DD45M I think they were called. SD45's with meter gauge (DD35?) trucks?
Yes, and yes. Essentially an SD45 on special four axle DD trucks for the Val Do Rio Docie (sp) meter gauge (39.37 inch gauge) ore hauling railroad. South African Railways also has meter gauge, generally referred to as 39" gauge for comparisons.
Perhaps Jack had some dealings with them when he was at EMD and can shed some factual info on them them since my "knowledge" comes from reading "Our GM Scrapbook" many years ago.
Hot Water posted:Rule292 posted:Dominic Mazoch posted:Meter wide track. There were some DD trucked units sent down to South America at one time.
DD45M I think they were called. SD45's with meter gauge (DD35?) trucks?
Yes, and yes. Essentially an SD45 on special four axle DD trucks for the Val Do Rio Docie (sp) meter gauge (39.37 inch gauge) ore hauling railroad. South African Railways also has meter gauge, generally referred to as 39" gauge for comparisons.
Perhaps Jack had some dealings with them when he was at EMD and can shed some factual info on them them since my "knowledge" comes from reading "Our GM Scrapbook" many years ago.
Thanks Jack.
The DD45M and SDL39 (amongst many other locomotives) give me a lot of respect for your engineering guys at EMD. I'm not a MechE or EE but I admire both concepts for increasing tractive effort and adhesion and reducing weight on rail for light rail branches.
Rule292 posted:Thanks Jack.
The DD45M and SDL39 (amongst many other locomotives) give me a lot of respect for your engineering guys at EMD. I'm not a MechE or EE but I admire both concepts for increasing tractive effort and adhesion and reducing weight on rail for light rail branches.
I remember one of the most difficult "engineering jobs" was trying to make an industrial switcher unit, the SW1001 model, as heavy as one customer requested. The customer was a steel mill with pretty tight clearances, so they selected the SW1001 (1000 HP, with narrow cab & clearances), except they wanted it REALLY heavy for higher tractive effort, which they were more than willing to pay for! The Engineering Dept. worked out ways to install as much ballast as possible, even adding extra thick steel for the walkways, and end-plates. I remember one of the Engineers was even thinking about extra heavy cab seat pedestals. They finally succeeded in getting the weight to almost 120 tons, and the "extra charge" for extreme ballasting was very substantial.
Hot Water posted:Rule292 posted:Dominic Mazoch posted:Meter wide track. There were some DD trucked units sent down to South America at one time.
DD45M I think they were called. SD45's with meter gauge (DD35?) trucks?
Yes, and yes. Essentially an SD45 on special four axle DD trucks for the Val Do Rio Docie (sp) meter gauge (39.37 inch gauge) ore hauling railroad. South African Railways also has meter gauge, generally referred to as 39" gauge for comparisons.
Perhaps Jack had some dealings with them when he was at EMD and can shed some factual info on them them since my "knowledge" comes from reading "Our GM Scrapbook" many years ago.
South African Railways ( which the freight operations now fall under Transnet Freight Rail, TFR) has 3'6", otherwise known as "Cape Gauge".
From Wikipedia, a recent EMD delivery:
Web page:
https://en.wikipedia.org/wiki/...African_Class_39-200
The old East African Railways is meter gauge. There are meter gauge locomotives recently delivered by EMD / Progress Rail now operating in Tanzania. From the TRL web site http://www.trl.co.tz/.
Hot Water posted:Rule292 posted:Thanks Jack.
The DD45M and SDL39 (amongst many other locomotives) give me a lot of respect for your engineering guys at EMD. I'm not a MechE or EE but I admire both concepts for increasing tractive effort and adhesion and reducing weight on rail for light rail branches.
I remember one of the most difficult "engineering jobs" was trying to make an industrial switcher unit, the SW1001 model, as heavy as one customer requested. The customer was a steel mill with pretty tight clearances, so they selected the SW1001 (1000 HP, with narrow cab & clearances), except they wanted it REALLY heavy for higher tractive effort, which they were more than willing to pay for! The Engineering Dept. worked out ways to install as much ballast as possible, even adding extra thick steel for the walkways, and end-plates. I remember one of the Engineers was even thinking about extra heavy cab seat pedestals. They finally succeeded in getting the weight to almost 120 tons, and the "extra charge" for extreme ballasting was very substantial.
That's what I call creative engineering! I remember Bethlehem Steel always ran their SWs in multiple units, just like the Valley they saw them as switchers, road switchers and MUed as road power.
Just remembered that the RS-1325 was another great example of EMD working hard to give the customer the right power.
Ah,,,,,,"Cape Gauge". Thanks for the correction Jerry. That also explains why the SAR had those beautiful 4-8-4s, that always seemed TOO LARGE for their track gauge.
Those trucks on these meter units are BB. They do not look like the narrow version of the "GP" truck on a span connector. A new "high ad" 4 wheel truck not seen in the US? Has any RR in the US thought of using such an eight axle setup on a new locomotive to increase TE?
Dominic, are the trucks on the UP DD40 what you had in mind?
Dan Weinhold
