IN JUNE I TRAVELED to Europe to call upon various motorcycle manufacturers and find out what they are up to. This June I called on the CZ factory in Czechoslovakia, the Puch factory in Graz, Austria, and the Sachs/ Hercules plant in Nuremburg, West Germany.
In the Letters section of the July issue of CYCLE WORLD, after reading the Editor's reply to Dr. Botway's letter ("9-mm Argument"), I couldn't help but feel that the Editor failed to realize that acting "like (sic) a human being"— however that is—often does not convince determined people.
IF there is an Olympics of motorcycling, it must surely be the International Six Days Trial. For almost a week, men and machines are faced with rugged terrain, tight time schedules, and tests to prove rider mechanical ability and motorcycle durability.
technical: THE FLOW THEORY WAY TO MAKE A SPORTSTER GO!
A Discussion Of The Principles Involved, And A Practical Demonstration.
IN THE OLD DAYS, they called it porting and polishing. Now they call it flow theory. More has changed than just the name. Before an accurate method of testing the effects of port work was commercially available, much of this work actually reduced horsepower—exactly the opposite of the intended result.
Suzuki's Entry In The "Superbike" Field Just Happens To Be An Excellent Touring Bike.
"CAN'T BE BUILT," the skeptics said. "It wouldn't be possible to cool it enough to keep it from seizing, what with two such large pistons so close together. And besides, the fuel economy would be atrocious!" So the 500-cc Suzuki Twin-a two-stroke-must be an "impossible" motorcycle.
WITH AN OUTPUT of more than 35,000 machines for the year 1913, the Hendee Mfg. Co. of Springfield, Mass., makers of America's oldest motorcycle, the Indian, clinched its claim to be the world's largest producer of motorcycles. Its two chief competitors, HarleyDavidson of Milwaukee and Excelsior of Chicago, had also exceeded all their previous production figures, for these were the palmy days of American motorcycling, with the motorcycle widely accepted for transport and pleasure—a happy state of affairs which unfortunately gradually waned until, 30 years later, motorcycling was at a very low ebb indeed.
IT WAS JUST FINE. The track was in unusually good shape this year, and there was even room to get two motorcycles side by side on the groove." ...says Jim Rice. Cheerily. Because he won. Any of his competition who listened probably responded with silent, obscene mutterings.
Does Anyone Remember Buck Rogers. . . Anyone At All?
BUCK ROGERS FLYS again. Only this time he would probably wear an "Easy Rider" helmet, as it would go quite well with the vroom-whoosh styling of Bridgestone's 350 GTO. The effect is quite jarring, for the GTO is only a minor variation of the 350 GTR which first made its appearance in 1967 and has changed little since.
"Schorsch' Still Bubbly as Ever, Recalls His Great Racing Days With BMW
MENTION "Schorsch Meier" around any motorcycle crowd and the automatic response comes rolling back in chorus: Remember ’39 when he was the first foreigner to win the sacred Senior TT for BMW! In point of fact, this Bavarian legend won a good many other motorcycle grands prix, Six-Day golds and 1200mile trials as well.
IN A COMPLETE no-nonsense fashion, Finland's Heikki Mikkola dominated the Firecracker Grand Prix in a most devastating manner. The event, held again at Saddleback Park, Calif., is part of the midsummer Viking motocross series that draws several of Europe’s very best riders during the three-week lull in the world championship rounds.
High Temperatures, Hot Competition And Near Misses Highlighted This Year's Dutch TT.
HEINZ J. SCHNEIDER
IT WAS THE SATURDAY of near misses this year on the Drenthe Circuit of Assen, annual scene of the Dutch TT. Only Giacomo Agostini and his three-cylinder MVs scored their predictable wins in the big solo classes, and Angel Nieto narrowly beat his Dutch opponent Jan de Vries to take the little 50-cc Derbi to another win and increase his championship lead.
While the Costa Mesa Fairgrounds mini-track, owned by the triumvirate of Jack Milne, Harry Oxley and Gene Rhyne, continues in its second year as a Fort Knox financially, with crowds of some 5000 in attendance regularly, the Class A speedway game on the Pacific Coast has not developed into a circuit as it did in the 1930’s.
D-A Lubricant Co., Inc., announces the availability of new D-A Speed-Sport Multi-Viscosity Motor Oil for high-per formance street and over-highway en gines. D-A is the nation's leading inde pendent manufacturer and marketer of heavy-duty lubricants, as well as D-A Speed-Sport Motor Oil, which was de veloped for high-performance and pro fessional racing engines. Unsurpassed-though not recom mended in racing engines-this multiviscosity lubricant cannot be outdone for street and over-highway operation. This lubricant contains the same ability as D-A smgle-viscosity motor oil to eliminate power-robbing deposits and formations created by many conven tional motor oils. Available in SAE 1OW-40, this new motor oil is recommended for all two cycle and four-cycle, air-cooled and water-cooled engines, where a multi viscosity oil is recommended by the manufacturer. For further information about any of D-A's range of lubricants, contact your D-A dealer or write to D-A Lubricant Co., Inc., Dept. CW-1O, 1331 West 29th Street, Indianapolis, IN 46208.
D-A Lubricant Co., Inc.
Speed is a new quarter-turn throttle from Tommaselli of Italy which has all the features of lightweight throttles and a few which aren’t so common. Speed combines the self-lubricating properties of nylon with the un breakability of “Avional” alloy. The drum design cuts down on the possibilities of throttle cable breakage, and the unit features an adjustable throttle stop. Cables can be changed without removing the twistgrip from the handlebars. Weight is a mere SV2 oz. Speed is available from Grizzly, Dept. CW-10, 812 S. Missouri, Waterford, CA 95386. Price is $8 including grips for 7/8-in. bars only.
D-A Lubricant Co., Inc.
CF100 Custom Flake Paint
Walifrin Industries, Inc. announces its new CF100 Custom Flake Paint. This revolutionary one-step brilliant metallic paint requires no base coat. All machines can now have the custom show look with this magnificent metallic finish. It is available in a wide variety of colors including silver and gold.
D-A Lubricant Co., Inc.
Universal Electronics has developed, and is now marketing, a new alarm device that is designed to protect most cycles from use by unauthorized persons. The unit is equipped with a key that allows the owner to turn the alarm on and off. When the alarm is activated, and the cycle is moved, the unit detects the movement and sounds the cycle’s horn. A sensitivity control is available for controlling the angle of engagement. The unit sells for $29.95 and is available for immediate delivery. Write to Universal Electronics, Dept. CW-10, 667 West Avenue I, Lancaster, CA 93534. Indicate make and model of cycle when ordering.
D-A Lubricant Co., Inc.
Maurice Arden’s world-famous “Big John” boots are now available from U.S. Racers, Dept. CW-10, P.O. Box 163, Downey, CA 90241. The new “Super Cross” boot has all the features that have made Big Johns the world’s standard for motocross racers, but now has a new instep strap that incorporates an ankle pad and new, smooth-finish leather. Other outstanding features are a one-piece sole of solid leather which is nailed and sewn and contoured for peg grip, yet is slidable over rocks and the ground without snag. Reinforced toe and heel are complemented by a full length tongue which keeps out dirt, dust and water as well as any sewn leather boot can. Six buckles are strategically located for support and are adjustable for fit and comfort. 21/2-mm thick leather is used throughout and lapped in front of the shin area. Rot-proof Terylene thread is used exclusively. Big John boots are available from the distributor and cost $48 a pair.
D-A Lubricant Co., Inc.
Baroni racing forks and shocks are now available in the United States. Manufactured by a former Italian racing star, they are possibly the most highly developed suspension units in the indus try. The forks feature a unique "double damping" system, controlling the travel progressively in both directions. A "cap tive" oil reservoir makes them impos sible to bottom. The last 3/4 in. of extension travel is hydraulically safety damped to prevent unnecessary shock and stress to the lower fork legs. Stan chion tubes are Swedish chrome-moly steel and are hard chrome plated. Crowns and fork legs are pressure molded from avunol R, developed for the new Concorde supersonic airplane. The legs are cast and precision machined to reveal any subsurface flaws.
My Bridgestone 350 GTR is giving me a slight problem, and from what I’ve seen, it is the common curse of owning any two-stroke. I use Sta-lube, and the oil pump is cut back about 1/8 in. from specs. It only smokes at starting and low speeds. It runs very hot to the touch but does not seize, and it is very, very quick.
With the death of the Irish rider Brian Steenson on the Wednesday following the Senior TT, the toll of this year’s TT races reached six and provided the abolitionists much ammunition in their campaign to stop motorcycle racing because of the danger involved.
Klakkety klak go the assembly lines. Boom boom go the sales. People in Japan are riding, and buying, motorcycles more than ever before, and all export markets are going strong. A very interesting publicity brochure released by a firm doing promotion for Honda reports that production of Japanese machines was up to 2,610,000 in 1969, from 2,410,000 in 1968, and that 1970 looks to be a three million machine year.
Free from the political troubles and unmarred by the bad weather which hampered last year’s event, the XXII “Bergamo Valleys” run was held in brilliant sunshine on June 28-29 with headquarters at Lovere for the first time. Lovere is Giacomo Agostini’s home town and is located on the shores of Lake Iseo in Northern Italy.