{"title":"Piko HO Scale Southern Pacific Krauss-Maffei ML4000 Modified Diesels","description":"\u003cp\u003eFeatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism for great low-speeds and precise running\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Lighting Board Instructions and CV Table\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping\u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"piko97815","title":"Piko HO Scale Southern Pacific #9102 Krauss-Maffei ML4000 Modified Diesel DCC\/Sound - 97815","description":"\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cstrong\u003e97815 SP KM ML4000 9102 Modified, Sound (HO-Scale)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cem\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism \u003cmeta charset=\"utf-8\"\u003efor great low-speeds \u003cmeta charset=\"utf-8\"\u003eand precise running\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" title=\"Decoder Instructions\" rel=\"noopener\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" title=\"Decoder Instructions\" rel=\"noopener\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" title=\"Lighting Board Instructions and CV Table\" rel=\"noopener\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping \u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":46938463469824,"sku":"PIKO97815","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9102-krauss-maffei-ml4000-modified-diesel-dcc-ready-97814-8966947.webp?v=1760776281"},{"product_id":"piko97813","title":"Piko HO Scale Southern Pacific #9101 Krauss-Maffei ML4000 Modified Diesel DCC\/Sound - 97813","description":"\u003cp\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003e\u003cstrong\u003e97813 SP KM ML4000 9101 Modified, Sound (HO-Scale)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cem\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism \u003cmeta charset=\"utf-8\"\u003efor great low-speeds \u003cmeta charset=\"utf-8\"\u003eand precise running\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Lighting Board Instructions and CV Table\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping \u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting\u003c\/span\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":46938730135808,"sku":"PIKO97813","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9101-krauss-maffei-ml4000-modified-diesel-dcc-ready-97812-9785014.webp?v=1760776281"},{"product_id":"piko97811","title":"Piko HO Scale Southern Pacific #9100 Krauss-Maffei ML4000 Modified Diesel DCC\/Sound - 97811","description":"\u003cp\u003e\u003cstrong\u003e97811 SP KM ML4000 9100 Modified, Sound (HO-Scale)\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cem\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism \u003cmeta charset=\"utf-8\"\u003efor great low-speeds \u003cmeta charset=\"utf-8\"\u003eand precise running\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Lighting Board Instructions and CV Table\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping \u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":46938750877952,"sku":"PIKO97811","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9101-krauss-maffei-ml4000-modified-diesel-dcc-ready-97812-9785014.webp?v=1760776281"},{"product_id":"piko97810","title":"Piko HO Scale Southern Pacific #9100 Krauss-Maffei ML4000 Modified Diesel (DCC Ready) - 97810","description":"\u003cp\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003e\u003cstrong\u003e97810 SP KM ML4000 9100 Modified, Non-Sound (HO-Scale)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cem\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism \u003cmeta charset=\"utf-8\"\u003efor great low-speeds \u003cmeta charset=\"utf-8\"\u003eand precise running\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" title=\"Decoder Instructions\" rel=\"noopener\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" title=\"Decoder Instructions\" rel=\"noopener\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" title=\"Lighting Board Instructions and CV Table\" rel=\"noopener\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan face=\"Arial, Helvetica, sans-serif\" color=\"#000000\" class=\"size10 Arial10\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping \u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp style=\"font-weight: 400;\"\u003e\u003cem\u003eTo convert to DCC\/Sound, use the \u003ca href=\"https:\/\/www.piko-america.com\/products\/et97451-118-psd-xp-5-1-us-km-ml4000-sound-decoder-plux22\" title=\"PSD XP 5.1 US KM ML4000 Sound Decoder PluX22\"\u003eET97451-118\u003c\/a\u003e American KM Sound Decoder, together with the separate \u003ca href=\"https:\/\/www.piko-america.com\/products\/56334-psd-xp-5-1-speaker-km4000-plux22\" title=\"56334 Speaker\"\u003e56334 Speaker\u003c\/a\u003e. \u003cbr\u003e\u003c\/em\u003e\u003cem\u003e(The 56627 decoder \u0026amp; speaker kit provides European-style decoder operation, not recommended for American DCC systems.)\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":46938970915072,"sku":"PIKO97810","price":271.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9101-krauss-maffei-ml4000-modified-diesel-dcc-ready-97812-9785014.webp?v=1760776281"},{"product_id":"piko97812","title":"Piko HO Scale Southern Pacific #9101 Krauss-Maffei ML4000 Modified Diesel (DCC Ready) - 97812","description":"\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cstrong\u003e97812 SP KM ML4000 9101 Modified, Non-Sound (HO-Scale)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cem\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism \u003cmeta charset=\"utf-8\"\u003efor great low-speeds \u003cmeta charset=\"utf-8\"\u003eand precise running\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Decoder Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"Lighting Board Instructions and CV Table\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping \u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp style=\"font-weight: 400;\"\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eTo convert to DCC\/Sound, use the \u003ca href=\"https:\/\/www.piko-america.com\/products\/et97451-118-psd-xp-5-1-us-km-ml4000-sound-decoder-plux22\" title=\"PSD XP 5.1 US KM ML4000 Sound Decoder PluX22\"\u003eET97451-118\u003c\/a\u003e American KM Sound Decoder, together with the separate \u003ca href=\"https:\/\/www.piko-america.com\/products\/56334-psd-xp-5-1-speaker-km4000-plux22\" title=\"56334 Speaker\"\u003e56334 Speaker\u003c\/a\u003e. \u003c\/em\u003e\u003cem\u003e(The 56627 decoder \u0026amp; speaker kit provides European-style decoder operation, not recommended for American DCC systems.)\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":46938971046144,"sku":"PIKO97812","price":271.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9101-krauss-maffei-ml4000-modified-diesel-dcc-ready-97812-9785014.webp?v=1760776281"},{"product_id":"piko97814","title":"Piko HO Scale Southern Pacific #9102 Krauss-Maffei ML4000 Modified Diesel (DCC Ready) - 97814","description":"\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cstrong\u003e97814 SP KM ML4000 9102 Modified, Non-Sound (HO-Scale)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cem\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism \u003cmeta charset=\"utf-8\"\u003efor great low-speeds \u003cmeta charset=\"utf-8\"\u003eand precise running\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\n\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/51645_97451-90-7001.pdf?v=1755890107\" title=\"Decoder Instructions\" rel=\"noopener\" target=\"_blank\"\u003eDecoder Instructions (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/97442_detailed_instructions_CV_chart.pdf?v=1714402140\" title=\"Decoder Instructions\" rel=\"noopener\" target=\"_blank\"\u003eDecoder Instructions - Long Form (pdf)\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1960\/4221\/files\/ML4000_LightController_CV_Chart.pdf?v=1714402140\" title=\"Lighting Board Instructions and CV Table\" rel=\"noopener\" target=\"_blank\"\u003eLighting Board Instructions and CV Table (pdf)\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping \u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting \u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp style=\"font-weight: 400;\"\u003e\u003cem\u003e\u003cmeta charset=\"utf-8\"\u003eTo convert to DCC\/Sound, use the \u003ca href=\"https:\/\/www.piko-america.com\/products\/et97451-118-psd-xp-5-1-us-km-ml4000-sound-decoder-plux22\" title=\"PSD XP 5.1 US KM ML4000 Sound Decoder PluX22\"\u003eET97451-118\u003c\/a\u003e American KM Sound Decoder, together with the separate \u003ca href=\"https:\/\/www.piko-america.com\/products\/56334-psd-xp-5-1-speaker-km4000-plux22\" title=\"56334 Speaker\"\u003e56334 Speaker\u003c\/a\u003e. \u003cbr\u003e\u003c\/em\u003e\u003cem\u003e(The 56627 decoder \u0026amp; speaker kit provides European-style decoder operation, not recommended for American DCC systems.)\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":46938971078912,"sku":"PIKO97814","price":271.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9102-krauss-maffei-ml4000-modified-diesel-dcc-ready-97814-8966947.webp?v=1760776281"},{"product_id":"piko97815-1","title":"Piko HO Scale Southern Pacific #9102 Krauss-Maffei ML4000 Diesel DCC\/Sound - 97815","description":"\u003cp\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003e\u003cstrong\u003e97815 SP KM ML4000 9102 Modified, Sound (HO-Scale)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eNOTE: Main photo shows loco 9102. See item description for road number information.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRP25 wheels\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSilky-smooth \u0026amp; p\u003c\/span\u003e\u003cspan\u003eowerful PIKO Mechanism for great low-speeds and precise running\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePeriod-specific details\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePIKO knuckle couplers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eDCC-Ready (on non-sound versions)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"size10 Arial10\" color=\"#000000\" face=\"Arial, Helvetica, sans-serif\"\u003eA Little About The Prototype...\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKrauss-Maffei of Germany worked closely with the Southern Pacific and the Denver \u0026amp; Rio Grande to develop a revolutionary new diesel-hydraulic locomotive. At the start of the 1960s, these beasts packed 4000 horsepower, a feat that would not be matched by American Diesel locomotive builders for many years. Typical American diesels of the time had only 2000 HP or less. The idea of replacing two locos with one in mainline service had great appeal. The hydraulic transmissions were an effort to eliminate the complexity and maintenance issues of electrical traction motors and all their related controls.\u003cbr\u003e\u003cbr\u003eThree “Prototype” locos were delivered to SP in 1961 and three to D\u0026amp;RGW. These cab locos with their rounded noses and full carbodies looked very different than the slightly larger batch of “Series” hood locos later delivered to the SP. Upon delivery, both roads promptly put their KMs to work in the hardest possible service, with dynamometer cars often following to test every aspect. Performance was impressive, but teething problems quickly developed. German technicians sent over to the SP and D\u0026amp;RGW worked to address issues and train local maintenance crews. Over time, many modifications were made and reliability improved, but in the end, the locos may simply have been victims of a difference of cultures. Technology that was commonplace and successful in European railroads just did not mesh well with American railroad operation and maintenance practices. None of the six “Prototype” locos survived the decade, but they made an indelible mark with many thousands of fans.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe original SP Prototype locos started life as almost identical triplets. But modifications over the years made them quite different. Now numbered 9100, 9101, and 9102, these faithful replicas show each loco in its mid-60s weathered and battle-scarred appearance, with numerous detail differences, such as: \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Side air intake louvers \u0026amp; upper intake shutters\u003cbr\u003e• Filter boxes and rooftop vents\u003cbr\u003e• Roof-mounted EMD air reservoirs with additional piping\u003cbr\u003e• EMD-style pilot snowplows\u003cbr\u003e• Exposed exhausts with butterfly valve flaps\u003cbr\u003e• Each loco features accurate – and different – SP ‘wing’ \u003c\/span\u003e\u003cspan\u003epatterns on the noses. (See the image for nose comparisons of the three Prototypes.)\u003cbr\u003e• Different paint patches and revised road number stenciling \u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e• ‘Pre-weathered’ paint colors authentically reflect years of \u003c\/span\u003e\u003cspan\u003esun-fading and partial repainting\u003c\/span\u003e\u003c\/p\u003e","brand":"Piko","offers":[{"title":"Default Title","offer_id":47125502263552,"sku":"PIK97815-1","price":329.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/files\/piko-ho-scale-southern-pacific-9102-krauss-maffei-ml4000-modified-diesel-dcc-ready-97814-8966947.webp?v=1760776281"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/6453\/5552\/collections\/piko-ho-scale-southern-pacific-krauss-maffei-ml4000-modified-diesels-9587281.webp?v=1760769883","url":"https:\/\/fusionscalehobbies.com\/collections\/piko-ho-km.oembed","provider":"Fusion Scale Hobbies","version":"1.0","type":"link"}