Claud Butler's World's Championship sprint machine appears in 1936 as the D.S.H. World's Championship Path Model and in 1949 as Model No. 24, brazed with Continental lugs and a 1in pitch block chain. From 1951 to about 1955 it is the World's Championship Sprint, Models BR.47 and BR.47a, with brazed lugs and a 1in top tube.
Known components
Listed exactly as our confirmed sources give them, with the year and source for each. A part listed for one year or version may not apply to every bike, so check against yours.
Frame and fork
- H.M. taper-gauge butted tubes1936 — Ebykr catalogue archive, p.17
- Brazed1949 · 24 — Ebykr catalogue archive, p.10
- Continental lugs1949 · 24 — Ebykr catalogue archive, p.10
- Brazed lugs1951 · BR.47, BR.47a — Ebykr catalogue archive, p.11; 1954 · BR.47, BR.47a — Ebykr catalogue archive, p.13; 1955 · BR.47, BR.47A — Ebykr catalogue archive, p.9
- steel bottom bracket shell1951 · BR.47, BR.47a — Ebykr catalogue archive, p.11
- 1in top tube1951 · BR.47, BR.47a — Ebykr catalogue archive, p.11; 1953 · BR.47, BR.47a — Ebykr catalogue archive, p.13; 1955 · BR.47, BR.47A — Ebykr catalogue archive, p.9
- Cutaway brazed lugs1952 · BR.47, BR.47a — Ebykr catalogue archive, p.11
- Brazed lug cutaway frame1953 · BR.47, BR.47a — Ebykr catalogue archive, p.13
Gears and drivetrain
- 1in pitch block chain1949 · 24 — Ebykr catalogue archive, p.10
Wheels and tyres
- 27in sprint tubular rims1936 — Ebykr catalogue archive, p.17
- Dunlop tubulars1949 · 24 — Ebykr catalogue archive, p.10
- Fiamme rims1951 · BR.47, BR.47a — Ebykr catalogue archive, p.11
- tubulars1951 · BR.47, BR.47a — Ebykr catalogue archive, p.11
- Fiamme sprint rims1954 · BR.47, BR.47a — Ebykr catalogue archive, p.13
Catalogue appearances
| Year | Name as printed · model no. | Details | Source |
|---|---|---|---|
| 1936 | D.S.H. WORLD'S CHAMPIONSHIP "C.B." PATH MODEL | H.M. taper-gauge butted tubes; 27in sprint tubular rims. | Ebykr catalogue archive, p.17 |
| 1949 | Model No. 24, "World's Championship Path" · 24 | Brazed; Continental lugs; 1in pitch block chain; Dunlop tubulars. | Ebykr catalogue archive, p.10 |
| 1951 | World's Championship Sprint · BR.47, BR.47a | Brazed lugs; steel bottom bracket shell; 1in top tube; Fiamme rims; tubulars. | Ebykr catalogue archive, p.11 |
| 1952 | World's Championship Sprint · BR.47, BR.47a | Cutaway brazed lugs. | Ebykr catalogue archive, p.11 |
| 1953 | World's Championship Sprint · BR.47, BR.47a | Brazed lug cutaway frame; 1in top tube. | Ebykr catalogue archive, p.13 |
| 1954 | World's Championship Sprint · BR.47, BR.47a | Brazed lugs; Fiamme sprint rims. | Ebykr catalogue archive, p.13 |
| 1955 | World's Championship Sprint · BR.47, BR.47A | Brazed lugs; 1in top tube. (About 1955) | Ebykr catalogue archive, p.9 |
Specs are as printed in the catalogue. Years are when the model appears in a source, not exact production dates.
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Sources
Last updated 19 October 2026. Every fact on this page comes from one of these.
- Ebykr catalogue archive: Claud Butler 1936 catalogue (transcription) (p.17)
- Ebykr catalogue archive: Claud Butler 1949 catalogue (transcription) (p.10)
- Ebykr catalogue archive: Claud Butler 1951 catalogue (transcription) (p.11)
- Ebykr catalogue archive: Claud Butler 1952 catalogue (transcription) (p.11)
- Ebykr catalogue archive: Claud Butler 1953 catalogue (transcription) (p.13)
- Ebykr catalogue archive: Claud Butler 1954 catalogue (transcription) (p.13)
- Ebykr catalogue archive: Claud Butler catalogue of about 1955 (transcription) (p.9)