DESIGNS: OPEN, DUPLEX, TRUSS, GIRDER & UNUSUAL FRAMES

With tubing getting thinner to reduce weight, frame strength became an issue. By the end of the 1880s, duplex tubing came into vogue. Also known as an ‘open frame’ or ‘open bottom bracket’ or ‘double diamond’, this style was copied from tricycles. With similar concerns around 1900, ‘truss’ and ‘girder’ frames had an extra tube for added strength. This was necessary if a frame was tall, but it was also sometimes used as a gimmick. The Premier ‘Truss’ had an extra tube from seat to steering head.
The extra tube the Royal Enfield ‘Girder’ ran from the bottom of the steering head to the bottom bracket.
The Elswick ‘Truss’ had two crossed down tubes.
Cycle makers worked hard to give their top-of-the-range model some sort of extra design flourish to make it stand out from the crowd and many odd frame styles appeared over the years…

Start Guided Tour

Items in this Collection

1890 Rudge Bicyclette Diamant No 2

View

1890-1892 Westminster Double Diamond Safety

View

1891 Matthew Smith ‘Earl’ Truss-Tube Safety

View

1891 Premier ‘Model F’

View

1891 Rudge Bicyclette Diamant ‘Modele H’

View

1891 Singer Apollo Safety

View

1892 Century Columbia (Duplex frame)

View

1896 Fowler Truss Frame

View

1897 ‘THE AMERICA’ Truss Frame

View

1897 ‘THE AMERICA’ Truss Frame Tandem

View

1897 Fowler Truss Frame – Catalogue

View

1898 Triumph Resilient Model 24AA

View

1899 The Gentleman’s Elswick ‘Truss-Frame’ Roadster

View

1899 Triumph Resilient Model 25AA Road Racer

View

1900 Warwick Cycle Co ‘Giraffe’ (McCormack patent)

View

1900s The Gentleman’s Elswick Popular Truss Light Roadster

View

1902 Royal Enfield Girder ‘Special Lightweight Roadster’

View

1905 Royal Enfield Sloping Top Tube Girder Road Racer

View

1906 Elswick Gentleman’s Special Cross Truss Frame ‘Model 6’ Bicycle

View

1906 Gentlemen’s Royal Premier No 3 Helical Truss Frame

View

1906 Royal Enfield Gent’s Light Roadster, Riche Girder Type

View

1906 Royal Enfield Lady’s Standard Girder

View

1907 Royal Enfield Standard Girder Tall Frame

View

1908 Royal Enfield ‘Modele Riche’ Lady’s Duplex Girder

View

1909 Resilient Royal Centaur

View

1909 Royal Enfield Standard Girder

View

1909 Royal Premier No. 3

View

1910 Elswick (Newcastle) Popular Truss Path Racer

View

1910s Sparkbrook R.I.C Roadster (Royal Irish Constabulary)

View

1911 Royal Premier 30″ Helical Truss Frame

View

1912 Lovell Diamond Truss Frame Roadster

View

1912 Royal Enfield 24 Inch Standard Girder

View

1912 Royal Enfield Duplex Girder Lady’s

View

1913 Royal Enfield Duplex Girder Gent’s Model 115

View

1914 Royal Enfield Bicycle Ambulance WW1

View

1918 Royal Enfield Riche Duplex Girder Roadster (WW1)

View

1920 Lovell Diamond Truss Frame Roadster

View

1920s Alcyon Curved Frame Road Racer

View

1920s French Truss Frame Road Racer

View
FOR SALE

1920s Gentleman’s Elswick Popular Truss Light Roadster

View
FOR SALE

1920s Lady’s Elswick Popular Truss

View

1920s St Etienne Truss frame

View

1924 Lady’s Elswick Popular Truss

View

1927 Velo Leo Chardon

View

1930 ‘S Frame’ Suspension (Spring-frame) Bicycle

View

1934 Mochet ‘Le Velocar 2 Roues’

View

1934 Moorson Superior Twin Tube

View
FOR SALE

1935 ‘Curly’ Hetchins Brilliant No 2 Vibrant

View

1936 CCM ‘Flyte Streamlined’

View

1936 Moller Auto-Cycle (with Sidecar)

View

1936 Monark Silver King Flocycle Model No. M037

View

1936 Triumph Moller Auto Cycle

View

1937 Elswick Special Cross Truss Roadster

View

1937 Royal Enfield ‘Twin Tube’ Lightweight Sports

View

1937 Runwell Super Sports (Super Braced Low Top Tube)

View

1938 Elgin Twin 20 ‘Model 502’

View

1946 BSA Paratroop Model 904ACP – American Export Model

View

1947 Curly Hetchins Vibrant Frame

View

1947 Paris Galibier

View

1948 Paris Galibier

View

1948 Paris Galibier (Original Paint)

View

1949 Fratelli Vianzone Wooden Bicycle

View

1951 Paris Galibier

View

1956 Paris Galibier

View

1960 Curly Hetchins Experto Crede

View
FOR SALE

1960s Union Strano # 782794

View

1960s Union Strano #775388

View

FRAME STYLES

View

Premiers & Cross-Frames

View