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Why is it that some locomotives (such as NALW's C40-8 "narrow-cab") completely dump the air when the brake handle is moved to the "release" position, while others (such as NALW's C40-8W "wide-cab") only reduce the air to 70 PSI or so before pumping back to full pressure?When I have a narrow-cab in the lead, it takes about half an hour to get the brakes to full operating pressure. With an identical consist, if I put a wide-cab in the lead, I can be moving in under five minutes.I compared the .eng files for both of these units until I was completely cross-eyed and found NO significant differences whatsoever.Can someone please help me solve this mystery?Bruce Bridges
In the train brakes section, many file leave out holding, they should look like this: Notch( 0.3 1 TrainBrakesControllerGraduatedSelfLapLimitedHoldingStart ) Kevin Arceneaux DEFAULT IS FOR DUMMIES
AirBrakesAirUsedPerPoundsOfBrakePipePressure( 0.75 )Could it be this line as well I put 0.75 for all my units and it does not use that much air I find. rob20
Hi Rob, Not really. Kev got this on the button, just add the term Holding as shown in his answer. You need to have the line you mention about 1.3-1.5 in order to maintain the need to conserve air on long steep grades. Bob