هيسكيث V1000

دراجة هيسكيث V1000 هي دراجة نارية بمحرك ثنائي الأسطوانات على شكل V بسعة 992 سم مكعب (60.5 بوصة مكعبة) وعمود كامات علوي ، وأربعة صمامات لكل أسطوانة . صُممت وصُنعت في الأصل من قبل شركة هيسكيث للدراجات النارية في دافنتري ، نورثامبتونشاير . كانت مبيعاتها مخيبة للآمال نظرًا لارتفاع سعرها، وقوة محركها التي بلغت 86 حصانًا، والتي كانت تُعتبر ضعيفة نسبيًا بالنظر إلى وزنها الثقيل البالغ 244 كجم (538 رطلًا) .     

تم إنتاج حوالي 149 دراجة نارية من طراز V1000 قبل تصفية الشركة في أغسطس 1982، ^{[ 1 ]} وبعد ذلك واصل ميك بروم تطويرها وإنتاجها. ^{[ 2 ]} في عام 2010، استحوذ رجل الأعمال بول سليمان على أصول الشركة، وأعاد إحياء العلامة التجارية من خلال إنتاج محدود جديد.

ذكرت مراجعة لمجلة "موتور سايكل نيوز " أن "المحرك يتميز ببساطة كلاسيكية، حيث يُنتج قوة متواضعة تبلغ 86  حصانًا عند 6500  دورة في الدقيقة فقط"، مضيفةً أن المشترين الذين يرون دراجة هيسكيث V1000 على أنها نسخة من دراجة فينسنت ثنائية الأسطوانات من ثمانينيات القرن الماضي، يجب أن "يدركوا أنها دراجة نارية بريطانية كلاسيكية مصنوعة يدويًا وهادئة نسبيًا". ^{[ 3 ]}

كان اللورد ألكسندر هيسكث يخطط لإنتاج دراجة نارية جديدة منذ عام 1974، وبدأ محادثات مع شركة ويستليك المتخصصة في المحركات عام 1977 حول التطوير المقترح لمحرك V-twin كبير . تأسست شركة هيسكث للدراجات النارية (Hesketh Motorcycles PLC) عام 1981، وأُنشئ مصنع مخصص لتصنيع دراجة V1000 في دافنتري ، وبدأ الإنتاج في عام 1981.

Styled by John Mockett, who later went on to design the Triumph Rocket III, the Hesketh V1000 was conceived as a luxury sports machine that could save the British motorcycle industry.^[4] The engine was specially developed by Weslake as an air-cooled 90° V-twin with 95 mm (3.7 in) bore and 70 mm (2.8 in) stroke, giving a displacement of 992 cc. With a one piece cast crankshaft and aluminium jackets on iron cylinder barrels and alloy cylinder heads, the V1000 had four valves per cylinder and an overhead camshaft. The V1000 had electronic ignition and a Lucasalternator and starter motor. Lubrication was semi wet-sump^[5] and the gearbox was a five-speed constant mesh to a sealed roller chain final drive. Front suspension includes custom yokes machined from solid alloy billets, and conventional rear suspension is provided by twin Marzocchi shocks.^[6] The chain drive sprocket was coaxial with the swinging arm pivot, an arrangement to keep the drive chain tension constant, irrespective of the movement of the swinging arm. The alloy wheels, anodised either gold or black, were neither forged nor cast, but were made up from two sheet alloy pressings, riveted together. The frame was available either painted black or nickel-plated. Subsequently, the V1000 received several updates to address early problems, including digital engine management, and modification to suspension, brakes, wheels, engine and gearbox.^[7]

After the collapse of the Hesketh Motorcycle company, Lord Hesketh acquired most of the liquidated assets; and in 1983 he formed a new company, Hesleydon Ltd, to manufacture a revamped V1000 with a full fairing. This model, the Hesketh Vampire , was described by reviewers as "heavy and tall". The Vampire went into production prematurely, while still needing development. As well as gearbox problems such as false neutrals, the new fairing restricted turning and the Vampire did not sell well.^[1]

Broom Development Engineering was established in 1982 by Mick Broom, the Hesketh engineer and test rider.^[8] The company continued both to improve the V1000 engine and frame performance and to update earlier motorcycles to the latest specification. The company has annually produced about a dozen V1000 EN10 motorcycles, an updated V1000 with oil cooling improvements such as an oil radiator to cool the rear cylinder. Some fifty Hesketh Vampire tourers were built to customer specifications.^[2] Amendments to the Vulcan model include radial tyres, more modern suspension and brakes, digital engine management, a bigger engine, and changes to the running gear.

In 2006, after the failure of his business ventures, Lord Hesketh sold the family seat, Easton Neston, at Towcester in Northamptonshire. In September 2008, in a bid to attract much needed investment in the marque, Mick Broom put the Hesketh motorcycle business on the market.^[9] In 2010 the Hesketh brand was taken over by entrepreneur Paul Sleeman. In August 2011 Broom, who has built more than 300 Hesketh motorcycles, was badly burned in a petrol fire in a workshop.^[10]

• "Broom Engineering".{{cite web}}: CS1 maint: deprecated archival service (link)
• Classic Bike V1000 review
• Hesketh Motorcycles, Kingswood, SurreyArchived 18 July 2012 at the Wayback Machine