The MK1 Norton Commando

The Norton Commando was the last twin piston-engined motorcycle produced by the Norton Motorcycle company.
During the 10 years it was in production it was popular all over the world. In the UK it won the MCN "Machine of the Year" competition for five successive years from 1968-1972
Some regard it as the British Motorcycle Industry's swansong, selling well from its introduction in 1967 through the end of the British bike industry as a commercial concern in the mid 1970s
The origins of the Norton Commando can be traced back from the late 1940s 497cc Norton Model 7 Twin,which was designed by Bert Hopwood.The twin cylinder design evolved into the 650 cc Norton Dominator and 750 cc Norton Atlas before being launched as the 750 cc Commando in 1967.
Mk1 750cc
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 production racer 'S Type' which had a high level left-side exhaust and a 2.5 gallon petrol tank.
The machine was produced with parts from all over England,with the engines from Wolverhampton, frames from Manchester, while the 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.
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 750cc 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.
The ‘Combat’ engine was introduced in January 1972 saw the appearance of the ‘Mk4 Fastback’, updated ‘Roadster’ and the ‘750 Interstate’. The ‘Combat’ delivered 65b.h.p. at 6500r.p.m. with a 10 to 1 compression ratio, but the stressed 750cc twin proved extremely unreliable, with main bearing failures and broken pistons common.
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.
Dave Burton
www.bargain-motors.com