96RAF Posted June 30 Share Posted June 30 This is a visiting loco at our local heritage railway. For all those who moan about the chuff to wheel synch being awry, can you definitely say this is correct. https://m.facebook.com/groups/FofMNR/permalink/2486968791514385/? Link to comment Share on other sites More sharing options...
ntpntpntp Posted June 30 Share Posted June 30 (edited) Watching the video I counted 6 chuffs per revolution which is correct for a 3 cylinder loco. Model locos without a chuff sensor so often have the chuff rate far too slow 😞 Edited June 30 by ntpntpntp Link to comment Share on other sites More sharing options...
What About The Bee Posted June 30 Share Posted June 30 I got the 6 chuffs per revolution as well NTP. I was confused until you mentioned 3 cylinders. Thank you! I mark the orientation of the crank pin to the coupling rod, and simply count the number of chuffs until it returns to that location. In this case, 6. Looks about right to me Bee Link to comment Share on other sites More sharing options...
ntpntpntp Posted June 30 Share Posted June 30 The beat has a triplet feel "1,2,3" "1,2,3" which is a give-away of a 3-cylinder loco. Link to comment Share on other sites More sharing options...
Going Spare Posted June 30 Share Posted June 30 Sounds about right to me, although my memory of hearing one close-up probably has to go back to before the 1959 electrification. I also seem to recall the rebuilds had a slightly different sound even with the same overall synchronisation. Different valvegear & blastpipe/chimney, perhaps. Link to comment Share on other sites More sharing options...
96RAF Posted June 30 Author Share Posted June 30 Thanks guys. It's a lovely loco in the flesh. Link to comment Share on other sites More sharing options...
atom3624 Posted June 30 Share Posted June 30 NTPNTPNTP got it 100% right - 2x triplets - 6 chuffs per revolution. The distinct double triplet sound still hasn't been mastered in model form, but at least a fairly consistent 6 chuffs per revolution are. Al. Link to comment Share on other sites More sharing options...
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