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Hello Mick I'm surprised you hav'nt had more feed back from your thread re working a mixed braking system train.I know loco's were duel braked fitted but that Iam sure refers to them being able to work either vacuum or air braked trains the driver switching to the required train brake.My thoughts could be the engine being on vacuum with the air portion blow thro's next to the engine all t he cords pulled so the brakes were off the rear vacuum set providing the brake force.How a brake test could be carried out I wouldn't know if 2 different sorts of braking was involved.The guard would have to give the driver his slip having worked out the loading with regard to brake force & speed .Just some thoughts Mick never heard of it before just an idea of how it could be done.Thats what the forum is about am sure ill get shot down in flames by somebody. Cheers Jim.
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