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  • Belt, chain and friction drive

British cyclecars: the minor makers

Also known as GWK, Humberette, Duo, Dewcar, Bantam, Wooler Mule, Black Prince, Blériot-Whippet, Xtra, Jappic

In November 1912 Temple Press launched a weekly, at one penny, for the cyclecar: a cheap, light two-seater with a motorcycle engine, somewhere between a motorcycle and sidecar and a light car. These are the lesser British makers, from Humber’s 1903 Humberette to a racer billed as the world’s smallest.

Green open two-seater with a black buttoned seat, cream wire wheels and a brass lamp on a white floor.
A green 1913 Humber Humberette V-twin cyclecar with a buttoned black seat at the Louwman Museum, The Hague, Netherlands, in January 2017.Photo: Alf van Beem, Public domain, via Wikimedia Commons

At a glance

The spec plate

British cyclecars: the minor makers

Ten makers · Britain

Built
1903–⁠1927The first Humberette in 1903; the boom of 1912–⁠14 and 1919–⁠22; the Blériot-Whippet to 1927
Country
BritainFrom Kent and the Thames valley to Leicestershire and County Durham
Engine
270 cc to 1,419 ccFrom the Xtra’s Villiers single to the 1905 Humberette; most were motorcycle twins of about a litre
Seats
1 to 4Monocars such as the Rollo and the Xtra; most were two-seaters; three- and four-seat Blériot-Whippets
Wheels
4Most with four; the Xtra had three, and the Wooler’s two rear wheels sat close together
Price new
70–185 guineasThe cyclecars at Olympia, November 1912
Production
1,069 GWKsBefore 1914; GWK’s are the only firm figures, and no group total exists

Not yet recordedpower and top speed.

The story

History

The first issue of The Cyclecar came out on 27 November 1912 and surveyed the cyclecars at the Motor Cycle and Cycle Car Show at Olympia. Its first editorial was titled “Rapid but sound progress”, and its list of the cyclecars at the show ran to about 33 makers, from Mead and Deakin, Rudge and Duo to Humberette, G.W.K., Singer, Morgan, the French Bédélia and the AC Sociable.source 1 Most of the engines were V-twins, with a few singles and a few water-cooled fours; the drive went by belt, chain, shaft or friction; and the driver steered by wheel, tiller or cable and bobbin. Prices ran from the single-seat Rollo at 70 guineas and the three-speed New Hudson sociable at 80 to the Singer at 185 guineas, or 240 with a coupé body.source 1 The claim, often repeated, that Britain had more than a hundred cyclecar makers by 1914 has not been verified; the Olympia list counts about a third of that.source 1

The Cyclecar Club was formed in 1912 too. It became the Junior Car Club in 1919 and, through the Brooklands Automobile Racing Club, the British Automobile Racing Club of today.source 2 It held its first open hill climb at South Harting on 28 June 1913,source 3 and one of its officials, the inventor Dr A. M. Low, took delivery of a single-seater that year.source 4 The best-known British makers have their own pages: the GN cyclecar, the Morgan Three-Wheeler, the Carden, the Tamplin and the Scott Sociable. Ten smaller ones follow, in the order they began.

Humberette, 1903–⁠1905 and 1913–⁠1914

Humber, of Beeston and Coventry, used the name twice. The first Humberette of 1903 was a 5 hp two-seater of 613 cc, a copy of a De Dion-Bouton single on a tubular chassis with wire wheels, two speeds and reverse, and shaft drive; the 6½ hp Royal Humberette of 773 cc and a 7½ hp of 1,419 cc followed. Grace’s Guide calls them the first volume-produced British motor cars, and lists about 20 registration numbers; many run to Brighton.source 5 Ten years later the name came back on a cyclecar. The 1913 Humberette shown at Olympia in 1912 had an air-cooled Humber twin of 84 × 90 mm, a cone clutch, three speeds and shaft drive, rack-and-pinion steering and a transverse front spring. It weighed 7 cwt (356 kg) and cost £115, or £125 with hood, screen and full equipment.source 1

Printed advertisement with a drawing of a small open two-seater, the Humber script and Spanish text.
Plate I · c. 1913 A Spanish advertisement of about 1913 for the Humberette 8 hp V-twin cyclecar, at 4,000 pesetas.Photo: Unknown author, Public domain, via Wikimedia Commons
Green veteran two-seater with yellow wire wheels and two men aboard, spectators behind barriers.
A 1903 Humberette, FH 12, the first car of the name, arriving at Brighton at the end of the Veteran Car Run in 2023.Photo: Peter Trimming, CC BY-SA 2.0, via Wikimedia Commons

GWK, 1911–⁠1931

Arthur Grice, J. Talfourd Wood and C. M. Keiller, two of whom had worked at the Swindon railway works, built their prototype in a stable at Beckenham, then moved to Datchet in 1912 and to Maidenhead in 1914. Their car drove by friction. A transverse Coventry-Simplex twin of 1,045 cc, at the back, turned a disc; a wheel moved across its face from the rim towards the centre, and past the centre it gave reverse.source 6 At Olympia it was a two-seat torpedo at £135, with four forward ratios, “also reverse”, and a clutch that worked “by separating the friction discs”.source 1 GWK built 1,069 before the war and 82 Type Es from leftover parts. In 1919 a new company was floated with £300,000 and orders claimed for more than 5,000 cars, but its front-engined Types F and H, about 1,700 of them, were light cars rather than cyclecars. It went into temporary liquidation in 1922, built a last rear-engined car, the Type G, in 1930, and closed in 1931.source 6

Beige two-seater with a tan hood and black wire wheels in profile on grass, spectators sitting behind.
A 1914 GWK Type B, the rear-engined friction-drive car, at the Goodwood Festival of Speed in 2009.Photo: Brian Snelson, CC BY 2.0, via Wikimedia Commons

Duo, 1912–c.1914

Duo Cyclecars of Deptford, run in 1913 by J. C. McArthur and L. F. de Peyrecave, used Aster engines.source 7 At the Cyclecar Grand Prix at Amiens in July 1913 de Peyrecave drove the water-cooled Duo in place of the injured Messervy and finished fifth, in 4 h 12 min 24 s, running the last three laps on one belt after a fastener broke; the air-cooled Duo broke a magneto chain and ran out of time.source 8 The firm passed to the “Depford Co” around 1913.source 7

Bantam, 1913

Slack and Harrison of Kegworth, Leicestershire, built a cyclecar with an 8 hp Precision V-twin. Nothing more about it has been found.source 9

Dewcar, 1913–⁠1915

Harold Ewin Dew’s D. E. W. Engineering Co., of Eynsford in Kent, built the Dewcar, which became the Victor in 1915.source 10 At Amiens it ran as “a monocar to which a passenger’s seat had been attached”, and went out with tyre trouble.source 8 The British field there also included Samuelson’s Marlborough, carrying “a lady as his passenger”, and a GN that blew its cylinder heads off; the Bolton-Precision was withdrawn.source 8

We think it can be said fairly, that the simpler type of machine proved the most reliable.

Editorial on the Amiens race, The Cyclecar, 16 July 1913.source 8

Wooler Mule, 1919–⁠1920

After the war a second wave came, often from motorcycle and aircraft firms, and the Austin Seven undercut it from 1922.source 11source 12 John Wooler’s motorcycle firm announced the Mule in February 1919: a 1,022 cc air-cooled twin with rotary valves, its cylinders sticking out of the sides of the bonnet, a round dummy radiator, and two rear wheels so close together that it looked like a three-wheeler. The price was put at about £130 and had risen to £185 by December. Only a few prototypes were built, and it was dropped in 1920.source 12

Black Prince, 1919–⁠1924

Black Prince Motors of Barnard Castle, County Durham, had its runabout described in December 1919: it had two Union two-stroke engines side by side, 584 cc between them, an epicyclic two-speed gear and a single belt, coil springs, and frame and body in one, weighing under 3 cwt (152 kg).source 13

Another £100 proposition is the Black Prince runabout, a small four-wheeler embodying several features which depart from the conventional.

The Motor Cycle, 11 December 1919, as transcribed by Grace’s Guide.source 13

Grace’s Guide also puts a cyclecar built by H. G. Wright and five colleagues in 1919–⁠24, and a three-wheeled runabout by A. G. Cocks, lost when the motorcycle designer E. W. Cameron died in 1920, under the same heading; which vehicle was which is not clear.source 13

Blériot-Whippet, 1920–⁠1927

The Air Navigation and Engineering Co. built it at Addlestone, Surrey, in the former Blériot aircraft works, one of the cars made by aircraft makers after the war. It began as the Jones-Marchant, after its designers Herbert Jones and W. D. Marchant, and had no connection with the French Blériot cyclecar.source 11source 14 A 1-litre Blackburne V-twin of 14 bhp drove through a Zenith-Gradua belt, whose expanding pulleys gave an infinitely variable ratio; the bodies were plywood covered in leathercloth. A three-speed gearbox and chain came in 1922 and shaft drive in 1923, while the price fell from £300 at launch to £115 in 1924. Several hundred are thought to have been built, and Alec Issigonis owned one. ANEC failed in 1927.source 11source 14

Xtra, 1921–⁠1924

Cuthbert Clarke’s Xtra, from Chertsey, Surrey, was shown at Olympia in November 1921.source 15source 16 It was a three-wheeler shaped like a three-wheeled sidecar, with no front axle. A 270 cc Villiers two-stroke drove the single rear wheel by friction: two cork-covered wheels inside a drum gave two speeds, and there was no reverse. The first was a monocar with an occasional seat over the engine, good for more than 30 mph (48 km/h) by its maker’s claim; a two-seat Sociable followed in November 1922, with an 8 hp JAP twin as an option.source 16 The company went into voluntary liquidation in May 1924, and how many were made is not known.source 16

Jappic, 1924–⁠1926

The Jappic was a racer, not a road car: a 350 cc single-seater designed and raced by H. M. Waters, as Grace’s Guide spells the name, with a body by Jarvis and Sons. At Easter 1925 it was billed as the world’s smallest racing car and did 70 mph (113 km/h) in practice, and it set several records at Brooklands.source 17

Pictures

More photographs, old and new

Variants

Ten makers

The makers, in order of their start
VariantYearsWhat differsHow many
Humberette1903–⁠05; 1913–⁠14Humber’s single-cylinder voiturette, then a twin-cylinder cyclecar of the same nameNot recorded
GWK1911–⁠31A cyclecar to 1914: rear-engined two-seater with friction drive; front-engined light cars after the war1,069 before 1914
Duo1912–c.1914Belt-driven, with an Aster engine; fifth at Amiens in 1913Not recorded
Bantam1913An 8 hp Precision V-twin, from KegworthNot recorded
Dewcar, then Victor1913–⁠1915A monocar, run at Amiens with a passenger seat addedNot recorded
Wooler Mule1919–⁠1920A 1,022 cc rotary-valve twin and two close-set rear wheelsA few prototypes
Black Prince1919–⁠1924Two Union two-strokes side by side, an epicyclic two-speed gear and a beltNot recorded
Blériot-Whippet1920–⁠1927Blackburne V-twin and Zenith-Gradua variable belt drive; gears and chain from 1922“Several hundred”
Xtra1921–⁠1924A three-wheeled monocar with a 270 cc Villiers and friction drive; a two-seat Sociable from 1922Not known
Jappic1924–⁠1926A tiny single-seat racer with a JAP engine, for Brooklands recordsOne or two

Specification

From the Olympia tables of November 1912 unless marked; the Xtra from English Wikipedia

GWK, 1912

GWK, 1912
EngineCoventry-Simplex 8 hp water-cooled twin, 1,045 cc, mounted crosswise at the backsource 6
Drive“Through friction discs and propeller shaft to live back axle”source 1
Clutch“By separating the friction discs”source 1
Ratios3.9, 4.7, 6.2 and 9 to 1, “also reverse”source 1
Body and priceTwo-seat torpedo with high side doors, £135source 1

Humberette cyclecar, 1913

Humberette cyclecar, 1913
EngineHumber air-cooled twin, 84 × 90 mm, about 998 ccsource 1
DriveLeather-faced cone clutch, gearbox and shaft to a bevel-driven live axle; three ratiossource 1
SizeWheelbase 7 ft 3 in (2,210 mm), track 3 ft 6 in (1,067 mm)source 1
Weight7 cwt (356 kg)source 1
Price£115, or £125 with hood, screen and full equipmentsource 1

Xtra, 1921

Xtra, 1921
Engine270 cc Villiers two-stroke single, 3.75 hpsource 16
DriveTwo cork-covered wheels inside a drum on the rear wheel: two speeds, no reversesource 16
Top speedOver 30 mph (48 km/h), claimedsource 16

How many were built?

The few figures there are

No total; GWK’s are the only firm figuresOnly GWK’s output is recorded in any detail, by Grace’s Guide. For the Blériot-Whippet there is an estimate; for the rest of the group, nothing.

  1. about 1,700front-engined GWK Types F and H, 1919–⁠1926One source

    Grace’s Guidesource 6

  2. 1,069rear-engined GWK two-seaters before 1914One source

    Grace’s Guidesource 6

  3. several hundredBlériot-Whippets, as thoughtOne source

    English Wikipedia, citing Baldwin and Worthington-Williamssource 11

  4. 82GWK Type Es, built from leftover partsOne source

    Grace’s Guidesource 6

  • Two sources agreetwo good sources give the figure
  • One sourcea good source, alone
  • Unconfirmeda lead only, not yet checked

Famous for

Three points

  1. Friction drive

    The GWK, and later the Xtra, drove through friction wheels instead of gears, the GWK finding reverse past the centre of its disc.

  2. A magazine and a club

    The Cyclecar appeared in November 1912, and the Cyclecar Club of 1912 became today’s British Automobile Racing Club.

  3. Issigonis’s Whippet

    Alec Issigonis owned a Blériot-Whippet, a cyclecar built in a former aircraft works.

Racing and records

1913–⁠1926

Few of these makers raced, but two of them left a mark (more in racing and rallying).

5th
for de Peyrecave’s Duo at Amiens, 13 July 1913, on one belt for the last three laps.source 8
70 mph
in practice for the Jappic at Easter 1925, billed as the world’s smallest racing car.source 17
April 1926
Kay Don, driving a 500 cc Jappic, lowered the five-mile and ten-mile international records.source 17

Survivors and collecting

Today

The Humberettes of 1903–⁠05 survive in numbers and are regulars on the annual veteran run from London to Brighton.source 5 Grace’s Guide photographs a GWK registered HO 7192, and only one Blériot-Whippet is known to survive.source 6source 11 No survivor of the Duo, the Dewcar, the Bantam, the Wooler, the Black Prince or the Xtra has been found.

Sources

Numbered as in the text

Most of this page rests on Grace’s Guide’s maker pages and on two issues of The Cyclecar; for several makers only one short entry was found. Sources are given as plain text; the links are on the Credits page.

  1. The Cyclecar, first issue, 27 November 1912: the Olympia exhibitors, technical survey and specification tables, read from Grace’s Guide’s scan.
  2. Grace’s Guide, “Cyclecar Club”, citing Gareth Rogers, 100 Years of the British Automobile Racing Club (2011).
  3. Grace’s Guide, contents of The Cyclecar for 2, 16 and 23 July 1913.
  4. The Cyclecar, 2 July 1913, a note on Dr A. M. Low, read from Grace’s Guide’s scan.
  5. Grace’s Guide, “Humberette”, read in full.
  6. Grace’s Guide, “GWK”, read in full.
  7. Grace’s Guide, “Duo Cyclecars”, read in full.
  8. The Cyclecar, 16 July 1913: the Amiens race report, read from Grace’s Guide’s scan.
  9. Grace’s Guide, “Slack and Harrison”, read in full.
  10. Grace’s Guide, “D. E. W. Engineering Co”, read in full.
  11. English Wikipedia, Blériot-Whippet, read in full. Used as a lead; it cites Culshaw and Horrobin (1974), Georgano (2000), Worthington-Williams and Baldwin.
  12. Grace’s Guide, “Wooler Engineering Co”, citing Bacon and Hallworth, read in full.
  13. Grace’s Guide, “Black Prince Motors”, quoting The Motor Cycle, 11 December 1919, read in full.
  14. Grace’s Guide, “Air Navigation and Engineering Co”, read in full.
  15. Grace’s Guide, “Xtra Cars”, citing Baldwin (1994), read in full.
  16. English Wikipedia, Xtra (automobile), read in full. Used as a lead; it cites Baldwin, Worthington-Williams and The Motor Cycle (1921).
  17. Grace’s Guide, “Jappic”, quoting newspapers of 1925–⁠26, read in full.