The 1936 Claud Butler catalogue lists the Dual-Purpose model with H.M. butted tubing and 26 × 1¼ or 1⅜in rims, plus a 'D/P' 3-speed version with a Simplex, Cyclo or Tri-Velox gear.
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.24
Gears and drivetrain
- a 'D/P' 3-speed version had a Simplex, Cyclo or Tri-Velox gear1936 — Ebykr catalogue archive, p.24
Wheels and tyres
- 26 × 1¼ or 1⅜in rims1936 — Ebykr catalogue archive, p.24
Catalogue appearances
| Year | Name as printed · model no. | Details | Source |
|---|---|---|---|
| 1936 | "C.B." DUAL-PURPOSE MODEL | H.M. butted tubing; 26 × 1¼ or 1⅜in rims; a 'D/P' 3-speed version had a Simplex, Cyclo or Tri-Velox gear. | Ebykr catalogue archive, p.24 |
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.