The Olympic name runs through Claud Butler's track range: the Olympic Path (Model No. 25) in 1949, the bi-laminated Olympic Sprint (BI.46 and BI.46a) from 1951 to about 1955, and in 1961 an Olympic road-path frame in '531' with long-slot track ends. It is a different model from the 1936 Record Olympic.
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
- Bi-laminated1949 · 25 — Ebykr catalogue archive, p.10; 1952 · BI.46, BI.46a — Ebykr catalogue archive, p.11; 1954 · BI.46, BI.46a — Ebykr catalogue archive, p.13; 1955 · BI.46, BI.46A — Ebykr catalogue archive, p.9
- Bi-laminated Spearpoint frame1951 · BI.46, BI.46a — Ebykr catalogue archive, p.11
- 1⅛in top tube1951 · BI.46, BI.46a — Ebykr catalogue archive, p.11; 1953 · BI.46, BI.46a — Ebykr catalogue archive, p.13; 1954 · BI.46, BI.46a — Ebykr catalogue archive, p.13
- oval chainstays1951 · BI.46, BI.46a — Ebykr catalogue archive, p.11; 1955 · BI.46, BI.46A — Ebykr catalogue archive, p.9
- Bi-laminated sprint frame1953 · BI.46, BI.46a — Ebykr catalogue archive, p.13
- 1in top tube1955 · BI.46, BI.46A — Ebykr catalogue archive, p.9
- '531' road-path frame1961 — Ebykr catalogue archive, p.7
- long-slot track ends1961 — Ebykr catalogue archive, p.7
Gears and drivetrain
- block chain1949 · 25 — Ebykr catalogue archive, p.10
Wheels and tyres
- large flange hubs1949 · 25 — Ebykr catalogue archive, p.10
- Dunlop tubulars1949 · 25 — Ebykr catalogue archive, p.10
- Fiamme 27in rims1951 · BI.46, BI.46a — Ebykr catalogue archive, p.11
Catalogue appearances
| Year | Name as printed · model no. | Details | Source |
|---|---|---|---|
| 1949 | Model No. 25, "Olympic Path" · 25 | Bi-laminated; block chain; large flange hubs; Dunlop tubulars. | Ebykr catalogue archive, p.10 |
| 1951 | Olympic Sprint · BI.46, BI.46a | Bi-laminated Spearpoint frame; 1⅛in top tube; oval chainstays; Fiamme 27in rims. | Ebykr catalogue archive, p.11 |
| 1952 | Olympic Sprint · BI.46, BI.46a | Bi-laminated. | Ebykr catalogue archive, p.11 |
| 1953 | Olympic Sprint · BI.46, BI.46a | Bi-laminated sprint frame; 1⅛in top tube. | Ebykr catalogue archive, p.13 |
| 1954 | Olympic Sprint · BI.46, BI.46a | Bi-laminated; 1⅛in top tube. | Ebykr catalogue archive, p.13 |
| 1955 | Olympic Sprint · BI.46, BI.46A | Bi-laminated; 1in top tube; oval chainstays. (About 1955) | Ebykr catalogue archive, p.9 |
| 1961 | OLYMPIC | '531' road-path frame; 73° lugs; long-slot track ends. | Ebykr catalogue archive, p.7 |
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 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)
- Ebykr catalogue archive: Claud Butler 1961 catalogue (C. B. Cycles) (p.7)