BSA Rocket 3/Triumph Trident brought to you by MadaboutMotorcycles

7 Июн 2015 | Author: | Комментарии к записи BSA Rocket 3/Triumph Trident brought to you by MadaboutMotorcycles отключены
BSA A 75 Rocket 3
BSA A 75 Rocket 3

BSA Rocket 3/Triumph Trident



The BSA Rocket / Triumph Trident was the first modern superbike and the last motorcycle developed by the original Engineering Co Ltd) Triumph It was badge-engineered to be sold under the Triumph and BSA marques.

The Rocket3/Trident was the development of Triumph Motorcycles’ to move on from the basic twin. The engine was to give the power required by the US market avoiding the vibration associated an increase in capacity of the existing design.

During its production run BSA into financial troubles, and the course of the official seven model run approximately 27,480 were produced. By comparison, a quarter of a million Honda motorcycles were manufactured its first seven years.

Although designed in the mid-1960s, the of the BSA Rocket3/Triumph Trident was based on Edward Turner’s Triumph 500 cc Speed Twin of and the next year’s sports Tiger. Because of this, the Trident is sometimes known as the 100 and a half”.

However, when the and … are considered it is actually like three C15 engines: the T100 has a short …, the triple’s 67 × 70 mm (2.6 × 2.8 in) The pre-unit 500 was 63 × 80 mm (2.5 × 3.1 in), as was P1 the first prototype Triple. the rest of the engine layout is the T100 claim does genuine. The separate camshafts the Triumph engine are in evidence.

basic design was one of the most in motorcycling history, being for over 40 years in Triumph’s range of vertical twins, the Triumph Bonneville.

The three-cylinder was started in 1962 by Bert and Doug Hele. While progressed, test engineers the handling of the chassis by loading weights onto a standard 650 With the first prototype replica of which is now owned by the and Rocket 3 Owners Club TR3OC) running by 1965, it that Triumph could a machine in production by 1967.

However, the decision to produce a BSA with sloping cylinders and to Ogle Design to give the Trident/Rocket3’s their modern look, not only robbed the of its ‘lean’ looks and added (18 kg) of weight, but also production by 18 months. During a P2 prototype was produced with a production-based Trident engine, changed bore and … and improved cooling. Later, Hele obtained 90 bhp from a Trident engine, that if development had sped up in a 140 mph (230 km/h) British would have been a in 1972.

First modern era

The Rocket 3 / Trident were in the summer of 1968. They the first modern-era mass-produced production motorcycles. British magazine Motorcycle Mechanics What a fantastic machine! a claim they held on to for weeks before the introduction of the CB750K.

The British triple did not the five-speed gearbox, overhead electric start and disc of the CB750 and in 1970 Triumph export versions with the ‘classic’ look to try to revive sales.

Although all the three-cylinder and the Rocket 3 motorcycle, were at BSA’s Small Heath final assembly of the Triumph model was carried out at Meriden in The major differences were the and frame: a double loop engine mounted at a slant for the BSA and downtube with engine vertically for the Triumph. The rest was cosmetic: badging and painting.

Racing success allowed the to continue with a four-speed as models A75R and T150T. By of their better riding Triumphs sold better in the US BSA’s Daytona racing of the early 70. BSA’s sold better in the UK/Europe.

However did not meet expectations, and for the 1971 year a fifth gear was creating the models BSA A75RV and T150V . With mounting pressure, about 205 genuine Rocket3s came off the assembly before production ceased The Triumph Trident continued the 5-speed gearbox for the 1973 and model years, now with a disk brake replacing the drum, resulting in the final of the T150V. Tom Mellor set four new speed records at the Bonneville Flats in September 2008 a 1969 Triumph Trident

For the 1975 model year the was updated to the T160 — as below.

Slippery Sam

Doug development work of the Rocket3/Trident in working with frame Rob North, produced works 750 machines that were successful on the race track. probably the most famous bike was Slippery Sam, a class Trident prepared by Les and his team. Slippery Sam won consecutive TT races at the Isle of Man five running from 1971 1975.

Bert Hopwood recommended making a production of the racing triple, producing (63 kW) at 8,250 rpm — but his was ignored, partly due to financial

Racing development in the US was carried out at the CA facility under Racing Dan Macias. US BSA/Triumph dealers had for access to factory race and due to difficulties in obtaining race from the UK, Dan built his own jig and the frames manufactured by Wenco. The main from the factory North were TIG welding instead of flat plate rear mounts instead of built-up sheet and 4130 Cro-Mo material.

Dick Mann’s win at Daytona in was on a US specification bike.

Triumph X75

Main article: Triumph Hurricane

When the Triples designed, the original look was and defined with a rounded tank. However, to compete the newer designs, BSA/Triumph to redesign the look using the design company. This an 18 month delay and resulted in a look and less traditional look — only the BSA was by sloped cylinders and ‘RayGun’

When the Triples were to the American vice-presidents of BSA and Triumph in they were disappointed. knew Honda had a bike along, and felt the price of (£895) was too high and technical like vertically split cases ill-thought — meant continuing oil leaks. they did respect the fact the bike was fast, and the BSA team led by US VP Don (Vice President, General and Director BSA, Inc.

to 1969; reassigned as Vice National BSA Sales; resigned 8 1970); decided to set some at Daytona with a stock A75 for of the bike — they later only broken in 1971 by the Kawasaki Z1.

Brown home to America, and felt the needed a different look to A custom bike enthusiast, he designer Craig Vetter to the BSA A75 a face-lift. Vetter flew to New Jersey for the job interview, and returned on an BSA A75 with the brief to make it more balanced and with a look.

Brown had no agreement BSA group to undertake the redesign, Vetter he would only get his fee as hours when the project was for production, and swore Vetter to secrecy. Consequently Vetter had getting his $12,000 fee, but because Brown paid lawyers to create the contract, and was Vetter’s expenses out of petty Vetter rode the BSA A75 back to and described it as a great bike, but riding a board.

In his 1,000-mile (1,600 km) ride, he a few designs sketched onto his own postcards for his existing fairing

Brown now had to reveal his project to his Peter Thornton — of BSA/Triumph North America, whom he didn’t get along. had decided to resign from but when Thornton heard the design, he demanded that reveal the details to him or be fired. was called from Illinois at the 1969 Sales Conference, and eight hours in a stockroom.

people came by and looked in, Vetter getting more — until finally walked in. There was an audible and he then blurted out, My God a Bloody phallus! Wrap it up and it to England!

BSA A 75 Rocket 3
BSA A 75 Rocket 3

The bike arrived in just as the BSA marque was about to be Also, BSA-Triumph had set up a design at Umberslade Hall, and the design was as too trendy by chief designer Hopwood.

It was only after a positive reaction by the public to the as it appeared on the front of US magazine World in October 1970 BSA-Triumph realised it had a whole of scrap BSA parts that now be turned into a premium-priced a young engineer Steve got the job of supervising production for the 1972/3 The Vetter BSA Rocket3 became the X75 Hurricane.

Vetter was paid his $12,000 fee for his in March 1971, but had a difficult collecting it and it took several 1,183 engines were put for X75 production.

The prototype BSA Hurricane, for a time by Craig Vetter, is now on at the AMA Motorcycle Hall of Fame in Pickerington, Ohio.


In November 1974, production of the ceased, production had switched to the model. The T160 was the result of a of changes; some due to market to the earlier Tridents and some due to changes (mainly in the USA).

forward sloping cylinders (à la BSA electric start and gear-shift to the left hand side to with American safety NVT made a last ditch to save large scale and reduce the gap between the Trident and the CB750K. The T160 was produced for more than a year, at time NVT collapsed completely. The batch of T160’s came off the line the week before 1975.

In all, 7,000 were built and sold in


Model Years: (although some were in early 1976 and the last were finally sold in 1977). Numbers: about — the final 130 or so were as the Cardinal.

Significant Details

In December 1975, a last 288 bikes were destined for and another 224 for the USA. However, NVT them from those competitive markets to fulfil an of Tridents for the Saudi Arabian force. Police forces in the UK had switched to BMW motorcycles, but some the Yorkshire Constabulary still Tridents.

Five shipments, totalling 450 were sent to Saudi but the last 130 were still in the UK the Saudis cancelled the order so NVT Motorcycles decided to sell in the UK as the Triumph Cardinal. At the time the price of a stock T160 was The accessories were worth £150 — including bars, spotlamps, air horns, screen, panniers, single and radio rack — but NVT the Cardinal for £1,522.80.

In 1982, in the UK began bringing the bikes from Saudi — two dealers in Sweden and Finland back 180 bikes. The bikes had low but were poorly maintained and encrusted in sand. They restored, and sold out as ‘stock’

Thunderbird III

The end

Severe financial and problems at BSA, along the rapid disintegration of the entire motorcycle industry in the early led to a government sponsored merger in 1973 with Norton. the re-structuring plans announced by the formed Norton-Villiers-Triumph Ltd. resulted in a workers blockade of home Meriden works in Production of the Trident was eventually to BSA’s Small Heath in March 1974, but this disruption resulted in relatively few Tridents being produced.

BSA A 75 Rocket 3
BSA A 75 Rocket 3
BSA A 75 Rocket 3
BSA A 75 Rocket 3
BSA A 75 Rocket 3
BSA A 75 Rocket 3


Tagged as:

Other articles of the category "BSA":

Our partners
Follow us
Contact us
Our contacts

Born in the USSR


About this site

For all questions about advertising, please contact listed on the site.

Motorcycles catalog with specifications, pictures, ratings, reviews and discusssions about Motorcycles.