The Lady Lightweight is in Claud Butler's catalogues from 1936, with H.M. butted tubing and a reversible fixed-and-free gear. The 1939 version was Reynolds 531 with an open frame and twin stays, also offered with a Sturmey-Archer A.W. 3-speed. In 1949 it was Model No. 21 with a Sturmey-Archer A.M. 3-speed, and in 1951 and 1952 Models W.43 and BI.43, welded or bi-laminated. From 1953 the catalogues offer the Lady Lightweight as a frame design that could be built into any model.
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. butted tubing1936 — Ebykr catalogue archive, p.8
- Reynolds 5311939 — Ebykr catalogue archive, p.14; 1951 · W.43, BI.43 — Ebykr catalogue archive, p.9
- open frame with twin stays1939 — Ebykr catalogue archive, p.14
- also with Brampton fittings1939 — Ebykr catalogue archive, p.14
- 531 butted throughout1949 · 21 — Ebykr catalogue archive, p.2
- brazed lugs1949 · 21 — Ebykr catalogue archive, p.2
- open frame1951 · W.43, BI.43 — Ebykr catalogue archive, p.9
- welded or bi-laminated1951 · W.43, BI.43 — Ebykr catalogue archive, p.9
- Open frame1952 · W.43, BI.43 — Ebykr catalogue archive, p.9
- Offered as a frame design (extra rear triangle struts) on any model1953 — Ebykr catalogue archive, p.16
- Frame design option with extra rear triangle struts1954 — Ebykr catalogue archive, p.15
Gears and drivetrain
- reversible free and fixed gear1936 — Ebykr catalogue archive, p.8
- a Sturmey-Archer A.W. 3-speed1939 — Ebykr catalogue archive, p.14
- Sturmey-Archer A.M. 3-speed1949 · 21 — Ebykr catalogue archive, p.2
Wheels and tyres
- 26 × 1¼ or 1⅜in Endrick rims1936 — Ebykr catalogue archive, p.8
- Endrick rims1939 — Ebykr catalogue archive, p.14
- 26in Endrick rims1951 · W.43, BI.43 — Ebykr catalogue archive, p.9
- 26in wheels1952 · W.43, BI.43 — Ebykr catalogue archive, p.9
Catalogue appearances
| Year | Name as printed · model no. | Details | Source |
|---|---|---|---|
| 1936 | "C.B." LADY LIGHTWEIGHT MODEL | H.M. butted tubing; 26 × 1¼ or 1⅜in Endrick rims; reversible free and fixed gear. | Ebykr catalogue archive, p.8 |
| 1939 | C.B. Lady Lightweight Model | Reynolds 531; open frame with twin stays; Endrick rims; also with Brampton fittings or a Sturmey-Archer A.W. 3-speed. | Ebykr catalogue archive, p.14 |
| 1949 | Model No. 21, "LADY LIGHTWEIGHT" · 21 | 20, 21 and 22in; 531 butted throughout; brazed lugs; Sturmey-Archer A.M. 3-speed. | Ebykr catalogue archive, p.2 |
| 1951 | Lady Lightweight · W.43, BI.43 | Reynolds 531; open frame; 26in Endrick rims; welded or bi-laminated. | Ebykr catalogue archive, p.9 |
| 1952 | Lady Lightweight · W.43, BI.43 | Open frame; 26in wheels. | Ebykr catalogue archive, p.9 |
| 1953 | Lady Lightweight Design | Offered as a frame design (extra rear triangle struts) on any model. | Ebykr catalogue archive, p.16 |
| 1954 | Lady Lightweight design | Frame design option with extra rear triangle struts. | Ebykr catalogue archive, p.15 |
Specs are as printed in the catalogue. Years are when the model appears in a source, not exact production dates.
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.8)
- Ebykr catalogue archive: Claud Butler 1939 catalogue (transcription) (p.14)
- Ebykr catalogue archive: Claud Butler 1949 catalogue (transcription) (p.2)
- Ebykr catalogue archive: Claud Butler 1951 catalogue (transcription) (p.9)
- Ebykr catalogue archive: Claud Butler 1952 catalogue (transcription) (p.9)
- Ebykr catalogue archive: Claud Butler 1953 catalogue (transcription) (p.16)
- Ebykr catalogue archive: Claud Butler 1954 catalogue (transcription) (p.15)