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1968 Built Class 50 Number 50049 Thundering Whilst Tackling the Worth Valley Uphill Gradient

Channel: Mobile Trains
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British Railways Class 50 Co-Co diesel-electric locomotive number 50049 (originally entering service under the pre-TOPS scheme as D449 and famously named "Defiance") was built in 1968 by English Electric at the Vulcan Foundry. This 115-tonne Type 4 mainline locomotive is powered by an English Electric 16CSVT 16-cylinder turbocharged diesel engine which generates 2,700 brake horsepower. Utilizing a GEC electrical transmission system driving six traction motors, the locomotive is geared for a maximum operational top speed of 100 mph and exerts a starting tractive effort of 48,500 lbf. Maintained under the pride of the Class 50 Alliance / Fifty Fund, this iconic machine is turned out in its striking historical BR Large Logo blue livery, featuring full wrap-around yellow cabs, a dark blue body shell, and oversized white numbers.

The locomotive is seen here in 8K 16:9 widescreen power-thumping out of Keighley Station during the Keighley and Worth Valley Railway Summer Diesel Gala. Throttling hard on the uphill gradient, the locomotive is captured hauling a rake of maroon British Railways Mark 1 passenger coaches on Saturday 20/06/2026 at 09:35.

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AI summary Generated from Fishplate metadata

A British Railways Class 50 diesel-electric locomotive, numbered 50049 (formerly D449), is shown in operation on the Keighley and Worth Valley Railway. The footage captures the powerful locomotive as it departs from Keighley Station during a summer diesel gala event. Known for its high performance and distinctive historical livery, this iconic machine is maintained by the Class 50 Alliance / Fifty Fund. The video highlights the locomotive's impressive power and presence on the heritage railway line.

This summary is generated from structured Fishplate data and may need human review.
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Details
  • Platform ID 1-Aa5cwsfLI
  • Views 16
  • Date published 29 Jun 2026 05:00
  • Date added 30 Jun 2026 15:16
  • Recorded 20 Jun 2026
  • Locomotives 2
  • Headcodes 0
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