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Blister I and Blister II

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Blister I and Blister II
(as drawn by 01Salty)
  • Designer: R. A. Lister
  • Builder: R. A. Lister
  • Built: 1932
  • Gauge: 15 inch
  • Configuration: 4w
  • Arrived on Sodor: 1967

Blister I and Blister II, so named for the problems they have when starting in cold weather, are small twin diesels who work on the Arlesdale Railway.


The Blisters were built at the R. A. Lister Works in Dursley, England in 1932 with open-sided cabs. They arrived on Sodor in 1967 for the construction of the line. The volunteers of Arlesdale used parts to rebuild them with two 2-cylinder 12 h.p. Lister engines to rebuild them to a 15-inch gauge. They were repainted and fitted with a new cab and bonnet, in the style of a Lister Blackstone RM2. In 1989, they were refitted with two 20 h.p. Lister engines to improve performance. Both have full electrics, radios, and air brake systems for working light passenger trains in emergencies. They are used for maintenance and shunting duties and were originally brought to the line for construction.


The Blisters are based on the Ravenglass and Eskdale Railway's Cyril. Their trouble starting is based on the trouble experienced with the Muir-Hill Fordson granite tractors that worked at Ravenglass with stone traffic until 1953.


Blister I and Blister II are painted black with wasp stripes on their fronts.


The Blisters were only mentioned in The Island of Sodor: Its People, History and Railways.


Arlesdale Railway
RexBertMikeFrankJockBlister I and Blister IISigrid of Arlesdale

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