RMweb Gold MarshLane Posted November 25, 2019 Author RMweb Gold Share Posted November 25, 2019 7 hours ago, Colin_McLeod said: Sorry to quote you but how does this work with new build replica steam locomotives? No problem! I’ve not a clue, but would assume steam emissions are very different rules to diesel power unit emissions. 1 Link to post Share on other sites More sharing options...
RMweb Premium Reorte Posted November 25, 2019 RMweb Premium Share Posted November 25, 2019 9 minutes ago, MarshLane said: No problem! I’ve not a clue, but would assume steam emissions are very different rules to diesel power unit emissions. I'd guess that there simply aren't enough for it to make any difference. If someone was planning on building hundreds some rules would no doubt appear pretty quickly. I guess that newbuilds of old diesels would be out of the question (much harder to build a diesel engine from scratch anyway compared to steam), I believe the Baby Deltic Project is using a surviving existing engine so gets around it in the same way as the last 66s? 1 Link to post Share on other sites More sharing options...
RMweb Gold TravisM Posted November 25, 2019 RMweb Gold Share Posted November 25, 2019 7 hours ago, Colin_McLeod said: Sorry to quote you but how does this work with new build replica steam locomotives? I would assume that it would go on “grandfather” rights and it would be expected that they would have very high emissions. When NASA retired their space shuttles, they looked into a 21st century version of the Saturn V to lift heavy objects into orbit but they encountered two problems. One was nobody knew how to build F1 engines as they were effectively hand made in the 1960’s and the others was emissions. It was felt they would be too polluting, if that makes sense? 1 Link to post Share on other sites More sharing options...
Mark Saunders Posted November 25, 2019 Share Posted November 25, 2019 18 minutes ago, jools1959 said: I would assume that it would go on “grandfather” rights and it would be expected that they would have very high emissions. When NASA retired their space shuttles, they looked into a 21st century version of the Saturn V to lift heavy objects into orbit but they encountered two problems. One was nobody knew how to build F1 engines as they were effectively hand made in the 1960’s and the others was emissions. It was felt they would be too polluting, if that makes sense? Hydrogen and Oxygen when burnt produce Water so no emission problem? 1 Link to post Share on other sites More sharing options...
RMweb Premium Reorte Posted November 25, 2019 RMweb Premium Share Posted November 25, 2019 37 minutes ago, Mark Saunders said: Hydrogen and Oxygen when burnt produce Water so no emission problem? The fuel used for the first stage was kerosene (and liquid oxygen for the oxidiser) because it's denser than hydrogen, so kept the size of the first stage down (cost / practicality of building it even larger and aerodynamic drag being the deciding factors there). The second and third stages used hydrogen. 1 Link to post Share on other sites More sharing options...
RMweb Gold TravisM Posted November 25, 2019 RMweb Gold Share Posted November 25, 2019 35 minutes ago, Mark Saunders said: Hydrogen and Oxygen when burnt produce Water so no emission problem? Stage 1 of a Saturn V burnt Kerosene and Oxygen, Hydrogen and Oxygen in the upper stages because Kerosene doesn’t burn in the vacuum of space. Link to post Share on other sites More sharing options...
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