perjantai 3. elokuuta 2012

Norton 750 Commando

Veteraanimoottoripyöräklubin Veteraaniralli 3-5.8.2012 Rauha
  Norton on brittiläinen moottoripyörämerkki. Se on perustettu 1898 Birminghamissa. Alkuun se valmisti "kaksipyöräisten kauppaan tarvikkeita ja osia". 1902 yrityksen omistaja James Lansdowne Norton alkoi valmistaa moottoripyöriä, joihin se osti moottorit muualta. Omien moottorien valmistus alkoi 1908. Siitä alkoi ensin yksi-, sitten kaksisylinteristen pyörien tuotannon pitkä sarja, samoin osallistuminen kilpailutoimintaan. Toisen maailmansodan aikana yritys osallistui sotaponnistuksiin kahdella sotilasmallilla 16h- ja Big4-moottoripyörällä, joissa oli sivuventtiilimoottori. 1913 yritys meni konkurssiin, mutta pian Norton jatkoi toimintaa Bob Shelleyn kanssa, ja yrityksen nimi oli silloin Norton Motors. Ltd.Kun merkittävimmät osakkeenomistajat hylkäsivät Nortonin 1953, yritys alkoi heiketä, ja se joutui Associated Motor Cycles -yhtiön omistukseen. Moottoripyörillä oli 1950-luvulla laskukausi, ja Norton oli pieni valmistaja, mutta se pärjäsi hyvin. Sen myynti oli vilkasta etenkin Yhdysvaltojen myynnin ansiosta.1968 tuli markkinoille Norton Commando, joka myi erinomaisessti, ja se oli monta kertaa Britanniassa Vuoden moottoripyörä.
Norton 750 Commando
Norton 750 Commando
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Norton 750 Commando

Mk1 750 cc
Norton Commando 750 Interstate model with its distinctive large touring size petrol tank.

The Norton Commando was introduced in 1967 at the Earls Court Show. The first production machines completed in April 1968 had bending frame problems, removed with the introduction of a new frame in January 1969. The original model, called the 'Fastback' was joined by the scrambler style 'S Type' which had a high level left-side exhaust and a 2.5 gallon petrol tank. The first Commandos had a twin-leading-shoe front drum brake.
Norton 750 Commando

Production of the machine was initially complex and located across different parts of England, with the engines produced in Wolverhampton, frames in Manchester, while components and final assembly was at Burrage Grove, Plumstead. In late 1968 Plumstead works was subject to a Greater London Council compulsory purchase order, and closed in July 1969. With assistance of a Government subsidy, the assembly line was moved to North Way, Andover; with the Test Department in an aircraft hangar on Thruxton Airfield. Frame manufacturing was transferred to Wolverhampton, where a second production line produced about 80 complete machines each week. Components and complete engines and gearboxes were also shipped overnight, from Wolverhampton to the Andover assembly line.



Norton 750 Commando

The production racer, featuring an OHV tuned engine, front disk brake and was finished in bright yellow - known as the 'Yellow Peril'. In March to June 1970 the updated S called the 'Roadster' had the 750 cc OHV engine, low-level exhaust, upward angled silencers with reverse cones. September 1970 saw the introduction of the classic 'Fastback Mk2', which had alloy levers with modified stands and chain guards. The ‘Street Scrambler’ and the ‘Hi Rider’ were launched in May 1971, with the ‘Fastback Long Range’ with increased petrol tank capacity from July 1971.
Norton 750 Commando

The ‘Combat’ engine was introduced in January 1972 saw the appearance of the ‘Mk4 Fastback’, updated ‘Roadster’ and the ‘750 Interstate’. The ‘Combat’ delivered 65 brake horsepower (48 kW) at 6500 rpm[citation needed] with a 10:1 compression ratio, but the stressed 750 cc twin proved extremely unreliable, with main bearing failures and broken pistons common.
Norton 750 Commando

The 'Combat' engine combined with quality control problems gave the company a bad reputation, which was highly covered in the press. By the middle of 1972 BSA Triumph group were in serious financial trouble. The UK Government decided to bail the company out with a financial rescue package, providing it would agree to merge with Norton Villiers. Norton Villiers Triumph was duly formed and the new company got off to a shaky start.

The last of the 750 series, the MkV was produced from November 1972 to mid-1973 as a 1973 model and featured improved crank bearings and the standard grind camshaft. Compression was reduced to 9.4:1.


Norton 750 Commando

Interpol

After some police forces expressed interest in the Commando, Neale Shilton was recruited from Triumph to produce a Commando to police specifications. The end result was the 'Interpol' machine, which sold well to police forces, both at home and abroad. The 750 cc machine was fitted with panniers, top box, fairing, radio mountings, police lights, and auxiliary equipment. The 'Interpol' name was retained for Norton's later Norton Interpol 2 rotary engined Police motorcycle.


Norton 750 Commando






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