scalerailmodelling Posted March 23 Share Posted March 23 5 hours ago, Ruston said: Probably to restrict the flow of air over the radiator. The radiator would probably over-cool in cold weather, especially if the loco was only working intermittently, so restricting the amount of air passing through it would get the engine up to temperature faster. Ah that makes sense thanks 😊 Link to post Share on other sites More sharing options...
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