Norton Challenge P86

Norton Challenge P86
ManufacturerNorton Motorcycle Company
Also calledNorton Cosworth
Parent companyNVT
ClassRacing motorcycle
EngineCosworth 748 cc (45.6 cu in) DOHC, four-valves per cylinder, water cooled parallel twin
Bore / stroke85.67 mm × 64.9 mm (3.373 in × 2.555 in)
Power95 bhp (71 kW) @ 9,750 rpm
Ignition typeLucas RITA CDI
Frame typeStressed engine member
SuspensionFront: telescopic forks
Rear: swinging arm with twin shocks
BrakesFront: Twin discs
Rear: Single disc
Footnotes / references
[1][2]

The Norton Challenge P86, also known as the Norton Cosworth, is a racing motorcycle designed in 1973 by Keith Duckworth of Cosworth Engineering for Norton Motorcycles. The 750 cc (46 cu in) DOHC vertical twin was essentially two cylinders from Cosworth's world championship winning V8 DFV Formula One engine. A road going version was intended to be a replacement for the Norton Commando. Four complete machines[3] and around 30 engines[4] were made before the project was cancelled due to the financial collapse of NVT.

  1. ^ Cameron 2009, pp. 22, 26, 30–31.
  2. ^ Aynsley 2018.
  3. ^ Cathcart 1981.
  4. ^ Robson 2017, p. 217.