Re: New Diesels for D&S?
| July 14, 2018 09:54PM |
Chris Walker Wrote:
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> Dan,
>
> have you ever seen specs for a D/B equipped U10B ?
Chris,
Several times. They advertised them in the Car & Locomotive Cyclopedia, plus I have several original GE specification booklets.
To answer what I am guessing is coming next - continuous tractive effort 30,500 to 36,200 pounds depending on wheel size and gear ratio, but this is with GE761 traction motors for meter gage or wider. For GE 764 and 36" gage or wider, 26,400 pounds continuous tractive effort - not quite a K-28 replacement.
Weights start at 55 short tons, options and ballast adds more. I wouldn't expect more than 70 tons. As I believe you are aware, Caterpillar was a little too generous with their horsepower claims and these were later advertised at 950 hp traction instead of 1050 hp. Shouldn't be an issue as far as weight or clearance, and calculates out to 11 mph minimum continuous speed at 950 hp. It would likely have to be derated anyway due to altitude. The last U10Bs were built with Cat 3512 engines (derated rpm), and Cat actually sold a kit to re-engine the U10B with the 3512. (Vietnam re-engined some of their U8
I'd have to dig a little more to find the dynamic brake rating on these. This would assume the railroad running them had good enough track, as dynamic braking will tear up weak track with bad ties and no rail anchors.
Dan
-------------------------------------------------------
> Dan,
>
> have you ever seen specs for a D/B equipped U10B ?
Chris,
Several times. They advertised them in the Car & Locomotive Cyclopedia, plus I have several original GE specification booklets.
To answer what I am guessing is coming next - continuous tractive effort 30,500 to 36,200 pounds depending on wheel size and gear ratio, but this is with GE761 traction motors for meter gage or wider. For GE 764 and 36" gage or wider, 26,400 pounds continuous tractive effort - not quite a K-28 replacement.
Weights start at 55 short tons, options and ballast adds more. I wouldn't expect more than 70 tons. As I believe you are aware, Caterpillar was a little too generous with their horsepower claims and these were later advertised at 950 hp traction instead of 1050 hp. Shouldn't be an issue as far as weight or clearance, and calculates out to 11 mph minimum continuous speed at 950 hp. It would likely have to be derated anyway due to altitude. The last U10Bs were built with Cat 3512 engines (derated rpm), and Cat actually sold a kit to re-engine the U10B with the 3512. (Vietnam re-engined some of their U8
I'd have to dig a little more to find the dynamic brake rating on these. This would assume the railroad running them had good enough track, as dynamic braking will tear up weak track with bad ties and no rail anchors.
Dan
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488 stops for water at Los Pinos tank on closing day Oct. 1979. Photo courtesy Don Richter
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