What are 3 link couplings? - Upstairs Downstairs -
What are 3 link couplings? Three link couplings are exactly that: they are three links of chain that will connect your wagons. These 'loose' couplings were used in Britain on low speed trains till the 1970s. These trains did not have any automatic braking system and because of that, there was no pipe to be connected between wagons.
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