Vincent HRD - 90 TT replica
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Vincent HRD D2-492-49-17
Photo ou archives : F-M. Dumas

Capacity : 500
Model : 90 TT replica
Production : 1926 -
Category : (R) Racing


500cc Model 90 TT Replica - 1926

A winning double

Though the initials "HRD" are more usually associated with the name Vincent-HRD, the Wolverhampton-based marque had a distinguished history before Phil Vincent rescued it from financial difficulties in 1928.

Race against Time

The marque was founded in 1924 by WWI flying ace Howard R. Davies (HRD), who in his days as racing manager of AJS had made racing history by being the only man ever to win both Senior (500cc) and Junior (350cc) TTs with the same engine, a 350 AJS. Convinced that he could build a better machine, "HRD" unveiled his three-model range at the 1924 London Motor Cycle Show after a race against time to get them ready for the opening day (he had to bribe a night watchman to open up the Olympia exhibition building after hours to get the machines on the HRD stand in time).

Ultra-Modem Sensation

They caused a sensation, with their ultramodern design with loop cradle frames and the pioneering use of a saddle tank. The range all had JAP engines: the Howard Davies 90 was a race-tuned ohv 500, the 80 was a supersports ohv 350, and the 70/S was a side-valve 500 intended for sidecar use. The marque had a record of sports success: H.R. Davies himself won the 1925 Senior TT (his "racing special" engine used a single-port cylinder from a 1000cc JAP V-twin) and came second in the Junior, while ace JAP tuner and record-breaker Bert Le Vack lapped the Brooklands circuit at over 104 mph before the 1925 Olympia Show, and set new flying kilometer and mile and 5-kilometer and 5-mile records.


Engine: 488cc (85.5x85mm) air-cooled JAP racing single-cylinder four-stroke

Valves: overhead

Fuel System: Binks carburetor

Transmission: 3-speed hand shift, chain final drive

Suspension: Webb girder forks (front); rigid (rear)

Brakes: 7 inch drum (front); 8 inch drum (rear)

Wheels: 700x80mm clincher (front & rear)

Weight: 300 lb

Maximum Speed: 93 mph

This rare 1926 HRD 90 TT Replica is a customer competition version of the machine on which Howard Davies won the 1927 Senior TT.

Motorcycle encyclopedia Moto Passion, realised by François-Marie Dumas, include almost 2000 photos presented with an exhaustive history of the motorcycles exhibited.

This unique collection has been realised with the participation of many specialists. With many thanks in particular to Yves Campion, Michael Dregni, Didier Ganneau, Jean Goyard, Helmut Krackowizer, Michel Montange, Christian Rey, Bernard Salvat, Mick Woollett, etc

One can order here

  • Original cards on paper (in french)
  • High resolution scans or original documents presented and signed with my name.

Please contact me at for conditions and copyright.

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François-Marie Dumas

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