Chapelon and related Matters

Thanks. This is never ending!

PLM 5-231 E 71
PLM 5-231 H 30
PLM 5-241 D 145
PLM 5-241 E 27 1
PLM 5-150 A 10
PO 231 4500 to 4570 33 (remainder converted to 240P)
PO 231 4571 to 4600 30
Est 1-230 3501 t0 3890 36
Etat 3-141 C 250
Etat 3-231 D 135
Etat 3-231 DD 31
Etat 3-231 W 21
Etat 3-231 H 92
Etat 3-231 R 6
Etat 3-231 C 24
AL S14 1-231 B 60
LNER A2 6
LNER Peppercorn A1 49
LNER A1/1 1
LNER A2/1 4
LNER A2/2 6
LNER A2/3 15
LNER/BR A3 79
LNER P2 6 (Kylchap not fitted to 2005 but fitted to 2007)
LNER/BR V2 8
BR 71000 1
BR 60163 1
CSD 387.001 6
CSD 475.1 172
CSD 476.001 3
CSD 498.0 40
CSD 498.1 15

Total 4,918

 

There was one LMS Jubilee fitted but IIRC it was removed. In the preservation era we have 60163 and 71000*.
*Originally fitted with BR plain double blastpipe but in preservation fitted with the Kylchap exhaust that British Capprotti always said it should have.

 

6619 used to have one. Not sure if it still does or will have when it eventually returns to service

 

Didn’t Brussels and Fred at the KWVR get single Kylchap exhausts?
Thomas at NVR has a multi jet blast pipe but not sure what type.

 

To be removed, I believe, at the next overhaul at KESR.

 

Thanks. Updated. As for the Jubilees, five were fitted experimentally but they had problems and were removed!

 

Thanks for the Jubilee info.

 

As far as I am aware there was only one Jubilee with a double Kylchap, 5684 Jutland in 1937. It was too much of a good thing and the official report says it lifted the fire at anything more than a moderate output. It was removed at the next overhaul in 1938. Other Jubilees had plain double chimneys, but offhand I can only think of three others.
In addition, REL Maunsell was an early adopter, fitting Lord Nelson 862 with a double Kylchap in 1934. Holcroft reports that it improved steaming and performance, but no others were fitted until Bulleid put one on 865 in 1938 and used this and 862 for various experiments of which I have no details. Of course he turned elsewhere later... However the new cylinders Bulleid fitted to the Lord Nelsons were clearly influenced by Chapelon with larger valves and enlarged and streamlined steam ports and passages.
And Duchess 6245 City of London was built new with a double Kylchap in 1943, but I am aware of no test results as it was quickly removed as all the gubbins in the smokebox got in the way of tube cleaning.

 

Thanks for that. The reference for the five Jubilees came from Rowledge, J.W.P.; Reed, Brian (1984) [1977]. The Stanier 4-6-0s of the LMS. Newton Abbot: David & Charles. ISBN 0-7153-7385-4.

 

I can’t help but notice, frustratingly, that you’ve given Gresley and Peppercorns Pacifics but left out entirely all of Thompson’s, which had the double kylchap from new in all cases (A2/2, A2/1, A2/3 and A1/1). He was the only LNER CME to have standardised on this fitting for all of his Pacific’s.

 

Thanks for that. Post updated. Interestingly for the A2/3 in Wikipedia and LNER Info, there's no mention of Kylchap. Not forgetting the A3s and V2s!