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I saw an arrangement on a southdown Harrington once that would be rather good on a six legger decker. It was fitted with a Thelma electric retarder. This was controle by the footbrake pedal. As you went to apply the brakes the four notches of the thelma came in before the brakes even started to be applied. Cold brake drums ready for when needed. if four notches were applied as in an emergency situation you could fetch the passengers out of the seats. On service work i think an arrangement like this would be a Godsend. Think how many miles without a brake reline or adjust!
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