37906 at Bo'ness

Some thrash and clag footage from a couple of running days at the Bo'ness and Kinneil Railway, featuring visiting loco 37906.

The 37/9 sub-class was a group of six Class 37 locomotives modified with new bogies, ballast to increase weight and therefore traction, and new Mirrlees or Ruston 1800hp 6-cylinder diesel engines to replace the original 1750hp English Electric 12CSVT twin turbo V12 diesel.
37906 was one of two locos to receive the Ruston RK270T engine, the other four (three of which have been scrapped) having the Mirrlees MB275T.

The 37/9s were apparently quite quiet to begin with, earning them the nickname "slugs". The original silencers have since been removed however, making them significantly louder. They also put out a fair bit of clag as you will see.

Category:

Autos & Vehicles

Tags:

• BR
• 37906
• 37/9
• Slug
• Ruston
• RK270T
• Thrash
• Clag
• Bo'ness

[NOMAD8459]

Oh dear, thats a lot of unburnt fuel, nice though!

[tpvalley]

evidently they were called slugs due to a choke in the air line to governor, so as to allow turbo to spool without loads of clag, as in when power was opened up to full suddenly, but I think thats been removed, makes sense considering they produce nearly as much coal as a steam engine needs....