Is the chuff to wheel synch correct on this BoB

[96RAF]

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/?

[ntpntpntp]

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

[What About The Bee]

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

[ntpntpntp]

The beat has a triplet feel  "1,2,3" "1,2,3" which is a give-away of a 3-cylinder loco.

[Going Spare]

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. 

[96RAF]

Thanks guys. It's a lovely loco in the flesh.

[atom3624]

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.