LOT 713 - 1975 NORTON-COSWORTH CHALLENGE P86 750CC RACING скачать в хорошем качестве

LOT 713 - 1975 NORTON-COSWORTH CHALLENGE P86 750CC RACING

This motorcycle is to be auctioned at the Bonhams Summer Sale, The International Classic MotorCycle Show, Stafford , 2 – 4 July 2021 SALE TIMES Friday 2 July Collectors’ Motorcycles (Lots 1 - 127) Midday Saturday 3 July Spares and Memorabilia (Lots 201 - 551) 10am Sunday 4 July Motorcycles (Lot 601 - 811) 10am VIEWING Friday 2 July 9am to 5pm Saturday 3 July 9am to 5pm Sunday 4 July from 9am ADMISSION TO THE INTERNATIONAL CLASSIC MOTORCYCLE SHOW Admission is not included in the price of the catalogue. Tickets can be purchased in advance from classicbikeshows.com. REGISTER TO BID Bid online or via the Bonhams app. Register to bid online by visiting www.bonhams.com/26514 Contact our Client Services department on: +44 (0) 207 447 7447 or bids@bonhams.com COLLECTION OF PURCHASED LOTS All purchased lots must be cleared from the sale venue by 7pm Sunday 4 July. Limited collection is available until 11am Monday 5 July, by appointment only, and purchasers must advise Bonhams Motorcycle Department via email no later than 7pm Sunday 4 July if they intend to collect Monday. Please email ukmotorcycles@bonhams. com with your collection or transport instructions as soon as possible following your successful bid. Failure to instruct Bonhams by the given time will result in your vehicle being uplifted to Moving Motorcycle’s Northamptonshire store at your expense. Buyers should satisfy themselves that they have collected all relevant logbooks, documents and keys relating to their Lot(s) at time of collection. AUCTION ADDRESS Bonhams Sandylands Centre Staffordshire County Showground Weston Road Stafford ST18 0BD GENERAL ENQUIRIES - GUIDE FOR BUYERS – BUYER CHARGES Please contact Bonhams Motorcycles. OFFERED FROM THE NATIONAL MOTORCYCLE MUSEUM COLLECTION 1975 NORTON-COSWORTH CHALLENGE P86 750CC RACING MOTORCYCLE FRAME NO. JN 1 ENGINE NO. NONE VISIBLE • Ultra-rare Norton works racer • No engine/gearbox internals • For display purposes only The urgent need to replace its ageing Commando twin with something more modern for both road and track prompted NVT to commission a new engine design from Cosworth Engineering. First shown in 1975, the Challenge water-cooled twin borrowed heavily from Cosworth's 3.0-litre DFV V8 Formula 1 engine, yet despite a claimed maximum power output of 115-120bhp the racer's handful of outings were disappointing, rider Dave Croxford being unable to match his old Commando-powered machine's lap times. With NVT on the point of collapse, the project was shelved in 1976. Writing in Classic Bike magazine (December 1981 issue) Alan Cathcart states that of the four bikes constructed, two were sent to the USA while two remained in the UK until sold to a German entrepreneur. The latter then sold "two engines and enough chassis bits to make a compete bike" to Norton collector Ian Sutherland, and the resulting machine was ridden by Cathcart at Donington Park's 50th Anniversary meeting in August 1981. Cathcart's Challenge looked the same as the one last ridden by Croxford, complete with Norton's own leading-axle front fork and cast-aluminium, twin-shock swinging arm. Sutherland continued with development and ridden by Rob Sewell, a revised version up-dated with Harris cycle parts came close to a 100mph lap at the Isle of Man TT. The design's full potential would not be realised until 1988 however, when Roger Marshall won Daytona's Pro Twins race on Bob Graves' Challenge-based Quantel. The Challenge offered here lacks engine/gearbox internals and thus is offered for display purposes only. Nevertheless, given that in recent years Messrs Crosthwaite & Gardiner have built pre-war Auto Union Grand Prix cars from scratch, and various individuals have recreated the legendary Moto Guzzi V8, re-manufacturing engine components for the twin-cylinder Challenge should prove comparatively straightforward should the next owner so desire. The machine's mechanical condition is not known; accordingly, prospective purchasers must satisfy themselves with regard to its condition, completeness, correctness, or otherwise prior to bidding. GBP20,000 - 30,000 €23,000 - 35,000