LAST YEAR, racers and enthusiasts in this country had a thrilling firsthand look at a world champion in action when reigning 250 motocross title-holder Torsten Hallman competed in several scrambles events on both of our nation's major coasts.
In your "Service Department" (March '67), you gave several tips concerning the Bridgestone 175 Dual Twin. I experienced much the same performance from my Bridgestone as Mr. McIntosh, so I replaced the 16-tooth countershaft sprocket with a 15-tooth one, which would be equivalent to adding 2 to 3 teeth to the rear sprocket (as you suggested).
IT WOULD APPEAR that the inevitable has finally happened — the FIM has issued Bulletin Number 107, threatening riders with suspension if they compete in nonFIM sanctioned races in the United States. frames that work since 1953, but now has almost unlimited facilities, including a computer, to help work out frame configurations.
As a driver of a Messerschmitt cabin scooter (in addition to riding my Triumph 21) I was interested in your reply to the "backwards running two-stroke" query in your April issue. It is with regret that one notes your use of the past tense when talking of the 'schmitt.
I have enclosed a clipping of the very latest in motorcycle safety devices. Actually, it would probably be very effective as the few who did not give up cycling when these "sailing masts" became mandatory would probably be killed on the first windy day.
FOURTH ANNUAL, International, CYCLE WORLD Motorcycle Show, is the official title, an appropriate name for what has become the largest motorcycle show in the United States, rivaled only in attendance by the gigantic Earls Court in London.
THE THREE-FIFTY CLASS MOTORCYCLE, traditional stepchild of the sport, continues its gain in stature with the unveiling of the new 21-inch Bridgestone. Until recently, the expression "three-fifty" provoked such images as the Junior TT, or a "fun" class in AMA Sportsman scrambles, or a military courier's mount, or an essential element to an ISDT team.
SOME MONTHS AGO, on a Friday — that wonderful day of the week when we receive the British motorcycling weeklies that provide us with so much entertaining reading — the early morning first-cup quiet of the CYCLE WORLD offices were rent with shouts of "He's got our bike!
A MERGER CUTS THE COST OF THIS VERSATILE RACING UNIT
THE UNITED STATES has never been noted for an overabundance of men capable of designing effective competition motor-cycle frames, let alone any frame. In recent years, perhaps due to foreign influence, the situation has bettered itself.
HE TELLS US ABOUT A JOB WITH LONG HOURS, LOTS OF TRAVEL, AND NO FRINGE BENEFITS - SAVE BUILT-IN BUTTERFLIES. ANY TAKERS?
YOU'RE SITTING AT THE BAR of your favorite beverage house, sipping a single Beefeater marty on your way home from some late hours at the office, when the fellow sitting next to you leans over, blisters the lacquer around your glass with his breath and confides that he is going to jump the Grand Canvon on a motorcycle.
RACING IS A FANTASY sort of thing, albeit serious, in that it is a game, or contest, set apart from the "real world." The rider's concentration obliterates all other more prosaic considerations to the extent that except for the job at hand, he doesn't have a care in the world.
THE ORIGINAL INTENT behind building up a Rickman road racer was to see firsthand just how much has changed in frame design during the past five years. It is exactly that time span, to the month since the last of the famous Manx Nortons, AJSs and Matchlesses were built for sale.
FOR SOME, AN ISDT WARM-UP; FOR ARTHUR B., "A BIT TYME"
EVER SINCE THAT unknown caveman invented the wheel, man has been trying to prove himself faster than his fellow man. At times, a strong feeling of nationalism has caused the people from one area to challenge those from other areas.
MOTORCYCLES AND CAMERAS go together like ham and eggs, and I suppose the problem of how to transport the latter on the former first came up about the time Harley met Davidson. Cameras are extremely allergic to vibration, dirt, moisture, dust and bumps and thumps — just the things that come naturally to motorcycles.
An Historical Tribute to a Great Single Cylinder Motorcycle
THE MOTORCYCLE IS by nature a rather sporting method of transportation, and it is only natural that afficionados of the game hold the sports type of machine in high esteem. One such thoroughbred is the BSA "Gold Star" — a 350 and 500cc single that has endeared itself to motorcyclists the world over.
SUNBURNED, LIKE LAST YEAR, some 180,000 spectators at Germany's new Hockenheim Motodrome saw only one of six winners in this year's second WorldChampionship meeting take his laurels virtually unchallenged. In his first outing on Honda's latest title-contender, a six of more than 250cc capacity, Mike Hailwood demoralized his Italian 350cc opposition — Giacomo Agostini on his second-best MVthree and Renzo Pasolini, the former Aermacchi teamster, who had munched up his new Benelli four's rear wheel rim in an effort to keep up with Agostini, hanging out left and right of the bike, to squeeze a bit more cornering power out of the light, well-handling frame.
IT'S A PRETTY far-fetched notion that anyone would travel as far as the Saudi-Arabian desert in search of a motorcycle speed secret. But, that's just about what has happened, although we doubt at the time explorer-inventor Charles Rocheville discovered the combination of inorganic materials that was to become the basis for his solid lubricant process, that he was looking for something to improve the performance of motorcycle engines.
IT WAS THE SOGGY month of November that I sat in my Seal Beach hovel listening to the rain pounding incessantly on the roof, dripping through the holes that I meant to patch last month. Sipping from a freshly opened jug of Red Mountain, I rotated a small two-bit globe that stood on my desk.
TWO-WHEELED SPORT seems to run in cycles, if the pun is pardonable. In road racing we have the Duke era, the Surtees era and now the Hailwood age. Machinery wise, there were English, Italian and now Japanese periods of dominance. And now, the motocross world is going through perhaps its most critical and momentous change.
IT'S NO BIG SECRET that successful racing projects are invariably guided by successful racers, and a simple rule of thumb says that the greater the experience of the racer, the greater the chance for success of the project. The Yetman Corporation, builders of ultra-lightweight racing frames, have a new project underway, and if we are to consider the rule of thumb as gospel, we know for certain that their project is assured of success, because Yetman is collaborating with one of the most experienced scrambles riders in the country — Joe Bolger.
Be the first on your block to own a custom-tailored Jack Emmott grass-tracker — or if you find that the scheduling of grass-track events is too uncertain for the investment, Mr. Emmott will build you a machine more suited to American types of racing. When Jack says that he tailors a bike to a rider, he isn't kidding; in addition to such general information as intended use, engine type and size, type of carburetion, he requires specific data on rider weight — fully suited up — height of rider, leg measurements, length of arm, and distance, center-to-center, between outstretched arms. Political affiliation is unimportant. As an indication of the mechanical variations available, the grass-tracker shown is available with either one-half or one-gallon fuel tank; Amal Concentric, Track or GP carburetor (depending on engine and fuel used); BSA Goldstar 350 or 500, ESO DT6, JAP 350 or 500, Matchless 350 or 500, or Emmott-Matchless G85CS engines. Emmott sells his machines for $900, FOB England, and will build a reasonably modified stateside version for the same money. He can be contacted by writing Jack Emmott Ltd., Dept. CW, 5 Dupree Road, Charlton, London, S.E.7, England.
Jack Emmott Ltd.
CYCLE-TUNE ENGINE ANALYZER
If anyone has doubts about the vanishing shade-tree mechanics and the growth of sophisticated motorcycle servicing, he need only take a look at the ever-increasing number of pieces of servicing equipment tailored to the care and feeding of two-wheelers. Latest addition to this field is the CycleTune Engine Analyzer, a self-contained, professional tester featuring two multipurpose meters. The first of these measures rpm in two ranges: 0 to 2,000 for setting idle and balancing carburetion; 0 to 10,000 for high-speed testing, checking current output from generator and coil. This meter also measures percent of dwell, which provides an accurate method of setting ignition points on dual-ignition engines, and ignition point resistance. The second meter is a volt-ohm meter reading ohms in three scales: 0 to 500 for checking continuity of generator, alternator, regulator, primary coil windings and setting ignition timing; 0 to 5,000 for checking system resistance and continuity; and 0 to 50,000 for checking wiring insulation leakage, high-tension leads and secondary coil windings. This meter will also check dc voltage; kv output to spark plugs, coil output and coil load, and can be used to trace troubles in an engine that won't start; and will measure both current draw and charging system ampere output. The analyzer has a simple three-wire hookup and can be used on either twoor four-cycle engines, with either 6or 12-volt systems. Additional information can be obtained by writing Marquette Corp., Dept. CW, 5075 Wayzata Blvd., Minneapolis, Minn. 55416.
Jack Emmott Ltd.
The Spooky View Gas Gazer, made of "plastic glass," eliminates the guesswork in setting correct float levels in Amal Monobloc carburetors. The Gas Gazer replaces the standard float chamber cover, and when it is installed and the carburetor is mounted on the engine, a horizontal line must be scribed across the transparent face, \V4 inches from the bottom of the bowl casting, regardless of the angle of the carburetor. This line, then, will correspond to the correct gas level in the bowl. Other than facilitating float adjustment, the Gas Gazer permits visual observation to detect fuel contaminants, frothing or fuel line blockage. The Gas Gazer retails for $1.50 and is available from motorcycle dealers handling PABATCO accessories.
Jack Emmott Ltd.
With 184 different styles and types of gloves in their line, the Weber Glove Co. was bound to have something for the motorcycle rider, and sure enough, they do. The handsome gauntlet-type, shown ($7.95) with a special thermal liner ($1.00), is not only equal to the rigors of motorcycling, but offers a feature found in few gloves: a winged thumb (in glove-trade parlance) that eliminates seams from pressure points and thus eliminates blistering at the base of the thumb. The removable, washable thermal liner insulates in the same manner as does Scandinavian-type thermal underwear — the mesh creates a network of "air cells" that trap body-heated air. One feature we particularly like about the Weber gloves, and one that is no doubt carried over from their line of stylish ladies' and men's dress gloves, is that they are available in true half-sizes. For more info and prices on their complete line, write Weber Glove Co., Dept. CW, 836 San Julian St.. Los Angeles, Calif. 90014.
Jack Emmott Ltd.
The Triumph Corporation, in Baltimore, has just released a new accessory catalog which, we regret, is available only through Triumph dealers in the East. Nevertheless, for those Triumph owners in that half of the country, the catalog is an essential element to the motorcycling library, featuring all sorts of bits to make Triumphs faster, more comfortable, better looking, or just keep them in good running order. In addition to including a lot of standard Triumph parts, the catalog presents the complete Castrol, Amal, Dunlop and Bell-Toptex lines which Tri-Cor distributes. For the serious rider-mechanic there is a complete line of special shop tools that permits even the most difficult of work to be carried out — including wheel lacing. Drop by your local Triumph dealer and ask for a copy.
Jack Emmott Ltd.
Another new item to the growing and specialized field of motorcycle clothing, the Vestiti one-piece oversuit offers a solution to the motorcycle commuters' problems of keeping tidy during and after the ride. Sized small, medium and large, the suit is made of a combination of Fortrel and cotton, is waterproof, won't shrink, and is permanent pressed for continued neatness. Offered in five colors — yellow, red, gold, white and blue — the Vestiti retails for $26.00. Write Vestiti, P.O. Box 645, Dept. CW, Times Square Station. 340 W. 42nd Street. New York, N. Y. 10036.
Jack Emmott Ltd.
SUZUKI FUN CENTER CATALOG
One would imagine that a catalog from Suzuki Fun Center would include only "fun" accessories and parts, but fun pieces are only a part of the line offered. The catalog contains a complete line of essentials for all Suzuki models, presented in illustrated parts breakdowns like a dealer's service book. So complete is the parts selection, in fact, that it would be possible to build a Suzuki from the ground up with the items offered in this catalog. If you already have a Suzuki that you would like to modify for racing or fast playing in the dirt, the catalog is an excellent source for speed equipment ranging all the way from individual components to complete, balanced racing kits. Required reading for the Suzuki-phile, the catalog sells for $1.00 through Suzuki Fun Center, Dept. CW, 515 N. Victory Blvd., Burbank. Calif. 91502.
Jack Emmott Ltd.
A product has to be pretty good when a man is willing to stake his life on it, and from what we're told, Dri-SIide must be quite good indeed; for thousands of infantrymen in Viet Nam daily depend on this lubricant to keep their weapons in firing order. There's nothing magic about Dri-SIide; it's simply molybdenum disulfide suspended in light penetrating oil and solvents that evaporate soon after it has been applied, leaving a dry, slick surface. Dri-SIide has numerous applications on a motorcycle — carburetor slide, control cables, throttle control, brake arm pivot, and the final drive chain on competition bikes. At $1.25 per can, it's available from Jerry Bases, Dept. CW, 11029 Sarah St., No. Hollywood, Calif. 91602.
A visitor to historic Williamsburg, the colonial capital of Virginia, might have gotten stoked about a certain poster on the wall there. A 3-Star Half Mile at Langley Field, 40 miles south. My oh my. Three stars. Well, one of our correspondents got stoked.
STARTING OFF this month with the bog-wheelers, it was a foregone conclusion that Samuel Hamilton Miller would be lord and master of the Highlands in the annual classic Scottish Six Days trial, and just as the experts predicted, Sammy did, indeed, show complete mastery with his 252cc Bultaco.
ONE OF THE BIGGEST national events in post war years was the "Tour of Italy" for sports machines up to 175cc, racing on open roads (some days, 250 to 300 miles had to be covered, with the event lasting one week) like the "Carrera Mexicana" for cars.
JAPAN'S MOTORCYCLE manufacturers are delighted with the agreements reached in Geneva during the "Kennedy round" talks to reduce tariffs on imported goods around the world. As a result of the agreements, it will be easier to export Japanese motorcycles to most nations in the free world and perhaps to reduce prices as well.
THE MOTORCYCLE has been receiving some bad press of late in the nation's dailies. In the interest of fair play, my city editor ordered me to find a motorcyclist and interview him. "Find out what these nuts think," the editor said. My subject was easily found, but preferred to remain anonymous because of the increasing adverse publicity against his clan.