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MV Agusta
 Yamaha TZ 250 de 1986
Moteur Honda 6 cylindres de course, Japon
Kawasaki 500 H1R
Jaarno Shaarinen sur as Yamaha 350 en course
Norton 750 John Player Special
Motocyclette de course Honda 6 cylindres de 1967
Triumph 750 endurance
Yamaha AS1
Harley Davidson 750 de course
Motos de courses de légendesPilotes de motos de légendesDaytonaTourist TrophyIntenational Sixt Days Trial
 
Honda 6 cylindres 250 cm2
Motocyclette de course Kawasaki 500 moteur 3 cylindres 2 temps
Soichiro Honda had decided, in the begining of the fifties, that one day he would compete in the famous TT of Man, and in 1954 a 220cc single cylinder prototype racer was developed In that same year, Soichiro took a trip to Europe, watched the TT, and was very disappointed: the then European 250cc racing bikes had on average more than double the power of his prototype. He also used his trip to go on a buying spree; he bought rev counters, carburettors, rims, spark plugs and what have you. The story goes that, upon arrival at the airport for his return flight to Japan, his luggage was overweight and he was not allowed to check in. Honda opened his suitcases, took out all his clothing, put on as much as possible on top of each other, filled his pockets with parts, and that did the trick, whereupon he remarked to the airport personnel: "You are idiots! Now I'm allowed in, but the total weight in the plane is exactly the same!" He was quite right, of course; they should set a limit to the weight of passengers together with their luggage, not to luggage alone.A couple of years later, Honda had developed 250 and 305cc twins with a single OHC, used in national eventsBy 1959, Honda decided he was ready to take on the rest of the world, and the first Japanese team arrived on the Isle of Man.Honda arrives on Man with 5 riders, 4 Japanese and one American. They bring along five 125cc racing motorcycles and four training bikes, plus enough spares and tools to set up a self sufficient workshop - a very professional approach.
The racers, with the type designation RC-142, have open spine frames, in which the engine is a stress bearing part, with leading link front and swing arm rear suspension. The engine is a four stroke twin with the cylinders slightly inclined forward under 6 degrees, with DOHC, driven by a vertical shaft with bevel gears on the left hand side of the engine, and from there with gears to the camshafts.There are two valves per cylinder, as can be clearly seen from the position of the spark plugs in the picture. When during practice it becomes clear that the bikes are lacking in power, four-valve heads are flown in from Japan. Bore and stroke are 44 x 41 mm for a capacity of 124.6 cc, and with a compression ratio of 10.5 : 1, 18.5 bhp is developed at 13,000 rpm; maximum rpm is 14,000. The valve angle is 40 degrees for the inlet valves and 44 degrees for the exhaust valves; spark plugs for the four-valve heads are 10 mm. Carburation is by flat-slided Kei-hin carburettors with remote float chambers. Ignition is by magneto, driven by the inlet-camshaft. Lubrication is by wet-sump system, carrying 2 litres of oil. The gearbox contains 6 speeds, and the total weight of the bike is 87 kg. The wheelbase is 1265 mm. In the TT, the bikes finish 6th, 7th, 8th and 11th, earning Honda the team prize. The American rider drops his bike and doesn't finish.The race proved that the Honda's were reliable, but not yet fast enough, although the results no doubt would have been better if top European riders, well acquainted with the TT course, would have ridden the bikes. After the race, Honda's team returned to Japan, having spent on this one trip as much as most factories would spend on a whole season of racing.
Motocyclette Honda 125 cm2 , 5 cylindres 1966
Honda 750 Daytona
Mike Haillewood devant Phil Read
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It all started with a music factory called Nippon Gakki which later grew into the Yamaha company. It was founded in 1955 by Torakusu Yamaha who was actually a clock maker. The factory was filled with machines used to make propellers during the second World War, but now the first motorcycle was built called the Red Dragonfly YA-1 (still an airplane name ;o)
Yamaha had a good name for light, two stroke bikes, especially the 1960 YD models from 250cc YDS and later the 350cc YR1. A whole series of models was developed with the super popular YR5 from 1970 being light, fast, reliable and nicely priced. Another famous model was the YPVS from 1983 which had an exhaust valve which improved the output by 50 percent.
Yamaha stepped into the four stroke market around 1969 with the introduction of the XS-1, a 650cc English styled road bike. The XS was so popular that the producing kept going up until the 1980s. Especially the different model choices which Yamaha introduced was a great success for the American market.
Yamaha for some time dominated the super bike market in the late eighties with the FZR1000 which was a step up from the earlier FZR750. This super bike could match the best at its time and Yamaha had once again developed a bike which was a huge market success.
Yamaha, known to keep developing their successful models improved the FZR with a bigger engine, an exhaust value system, new chassis and upside down front fork over the years which kept its success guaranteed.
Yamaha had a try at building a heavy strong 1100cc bike in 1978 called the XS but the frame, weight and huge engine didn't do anything for the handling and the bike never became popular.
However the FJ1100 made up for that after being launched in 1984. Originally built as a super sports bike it became popular as a sports tour bike which later got an upgrade to the 1200cc in 1986. With improvements ongoing the FJ stayed poplar up until the 1990s.
A raw and huge impact into the world of bikes was the 1998 introduction of the YZF-R1. Powered by a 998cc engine, sharp handling, light weight and nice styling the R1 was unstoppable and grew very popular. Yamaha improved its success model and added styling changes and more to keep the R1 a huge hit in the super bike market. Yamaha used the success of the R1 to also introduce the YZF-R6 in 1996 a smaller engine based on the same design series as the R1. And in 2001 the roadbike version YZS1000 Fraiser was also introduced which a the same R1 engine but was slightly detuned.
Moteur Honda 6 cylindres 297 cc, courrait en 350
Motocyclette Honda 50 Cm2 twin le moteur tourne à 19000 tours minute
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Blue Pearl is Yellow Peril's big brother and was the last of three bikes built by Bill Bragg in the early sixties. It followed the same basic layout as the earlier bikes except that it had rear suspension to cope with problems of bumpy tracks and a super-charger to improve the power output. Even the innovator, Bragg, was among the first to super-charge Triumph twin engines, and the Allard Car Company helped him to sort out the blower set-up. The bike went on to record 11.19 seconds for the quarter mile, very much on the pace for 1962. Once again a 650cc Triumph engine is used, driving through a Norton gearbox and clutch. This super-charger is a Shorrocks unit and the methane fuel is fed through a hugh SU carb.
The most celebrated Triumph racer of all time, the only machine ever to win five TT races in the Isle of Mann in five consecutive years. Slippery Sam was one of three similar models built for the 1970Production TT, one of which, ridden by Malcolm Uphill, won the race at 97.71 mph. Tom Dickie was Sam's rider and, unused to Sam's ways, fumbled the Le Mans start and was last away. He rode to finish fourth.
The fastest lap was Alex George in 1975 at 102.82mph
The Slippery Sam nickname was coined during the 1970 Bol d'Or 24 Hour Race in France when a malfunctioning oil pump plastered the bike- and riders Tait and Jolly with oil.
This machine is No. 3 out of a batch of three production racing Triumph Tridents prepared by the experimental department at Triumph. It was first used on 6.6.70 for the Isle of Man Production TT race with Paul Smart riding. Paul had to retire on the second lap due to a faulty inner tube valve on the front wheel but not before he recorded a speed of 99.30mph on his first lap.
On 16th July 1970 this machine along with its sister bikes were rebuilt using frames specially altered with lifted bottom frame rails. This was to facilitate better handling with increased ground clearance.
On 8th August 1970 the machine was entered in the 24 hour Bol d'Or endurance race, the last to be held on the Montlhery circuit. The riders Paul Smart and Ton Dickie won at an average over 70.50mph, a race distance of 1838 miles, 469 laps, beating their nearest rivals by 9 laps. The riders averaged 20mpg, went through 4 rear chains and broke 1 throttle cable.
On 7th July 1971 the machine was overhauled after previous year's Bol d'Or, then on 8th August 1971 Paul Smart was placed 2nd overall at the Hutchinson 100 and on 21st-22nd September 1971 Smart was again placed 2nd in the Production Race at Silverstone.
The first motorcycle racing team to be backed by a major brand name was the John Player Norton equipe, which contested Formula 750 events from 1972 to 1974 with sponsorship from Imperial Tobacco, maker of Player's cigarettes. It was also the first Norton factory team seen in action for decades, revitalising the marque and taking on stiff foreign opposition.
Based in ex-military buildings at the Thruxton race circuit in Hampshire, the JPN team was set up by Norton Villiers in November 1971 and managed by ex-grand prix racer Frank Perris. After a winter of intensive work it wheeled out sleek, low-slung Formula 750 racers.
Their design was overseen by Peter Williams, a top-flight road racerand talented engineer whose father Jack ran AMC's race shop in the fifties. In 1971, Peter had created an effective racer around the Norton Commando roadster's power unit and it formed the basis for the more refined 1972 contender.
Williams knew other F750 teams has more engine power, so he concentrated on achieving superior handling and aerodynamics using a mini version of the Commando tubular frame, a pannier fule tank to keep weight low and wind tunnel-designed fairings.
The team's number one rider was Phil Read, who took promising fourth places at Daytona in the USA and Imola in Italy. He was also the second highest point scorer for the victorious British team in the Transatlantic Match Races. Later in 1972, outright wins were scored by Williams in the Brands Hatch Huntchinson 100 and Mick Grant at the Scarborough International.
Based in Australia during 1991, Brian Crighton's breakaway Roton team made strong impression, winning a national Superbike race and taking 15th place in the nation's GP with Steve Spray in the saddle. In 1992, Crighton fielded his rotaries in the UK and by mid-season he had gained backing from the Duckhams oil brand. The Crighton Norton team manged by Colin Seeley recruited Mark Farmer as rider and began getting results to outshine the fading JPS team, whih withdrew at the end of the year.
Over the next two seasons, Duckhams Crighton Nortons achieved a fantastic run of Superbike successes against the toughest possible opposition on UK circuits. Farmer moved on and his replacement Jim Moodie took second and third places in major 1993 championships. For 1994, the team riders were Phil Borley amd Ian Simpson, who both rode brilliantly to rack up no fewer that 52 hard-fought rostrum finishes, with Simpson clinching ultimate victory in the 1994 HEAT British Supercup series.
Based on the Roton machine, the Crighton Norton has a twin-spar aluminium Sppondon frame with the twin shock type of rear suspension preferred by Crighton. Engine development had raised output to 150 hp, transmitted via a six-speed close-ratio gearbox and weight was pared down to below 300lb. The Crighton Nortons retired at the end of 1994, while they were still the fastest in their class.
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