tag:blogger.com,1999:blog-7200631624389701992.post1155664348789134768..comments2024-03-04T12:01:36.256+00:00Comments on Sentinel Steam Loco 7109: Chuff-Synchronisation - Now what's that all about?AndyKChapmanhttp://www.blogger.com/profile/14132567027572460873noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7200631624389701992.post-68540933390170385552011-10-05T20:14:53.306+01:002011-10-05T20:14:53.306+01:00Edgar, (forgiven!) the exhaust steam from each eng...Edgar, (forgiven!) the exhaust steam from each engine travels via its own two inch bore pipe which splits to two one inch diameter nozzles. <br /><br />Thus the exhaust steam which is still under some pressure is forced through the two relatively small nozzles to create the blast up the chimneys.<br /><br />Two nozzles of a given diameter may be just right for this loco whereas one larger one might not have worked as well. I seem to recall that nozzles are quite difficult to design and get right and have to have a fair amount of experimentation before the best performance is achieved.<br /><br />I intend to do a post on the nozzles some time soon (but not on a theoretical basis).AndyKChapmanhttps://www.blogger.com/profile/14132567027572460873noreply@blogger.comtag:blogger.com,1999:blog-7200631624389701992.post-76638120774815443922011-10-05T19:07:35.117+01:002011-10-05T19:07:35.117+01:00Andy,
Please forgive non-engineer query: wouldn&...Andy, <br /><br />Please forgive non-engineer query: wouldn't splitting the exhaust pipe prior to the chimney not remove quite an element of the blast force? <br /><br />This is after the exhausted steam has travelled from the engines back into the cab - possibly loosing some blast gusto on the way?<br /><br />Just a non-engineer line of thought.<br /><br />Cheers - Edgar.Edgar Craggshttps://www.blogger.com/profile/12866814322248347186noreply@blogger.com