The final event in the 1972 Trans-AMA International Motocross series will be held Dec. 3rd, at Saddleback Park. The series begins in September in Ontario, Canada. The Saddleback purse will be $16,000 this year. Top motocross stars of the world will again compete, but of course it is too early to give any names as yet, because the riders rarely commit themselves very far in advance.
I just finished reading J. G. Krol’s article, “The Helmet Man,” in the June issue of CYCLE WORLD. This is most certainly an outstanding article on a most controversial subject which has been too long neglected. Recently, several other publications have attempted to deal with this subject only to provide no useful information other than a partial listing of safety helmet manufacturers.
I’ve heard about Feedback and I think it’s time the bikes get to tell you their point of view. My name is Gilbert 3153 and I’m a 1970 350 Yamaha. I’m getting Smith to write this letter, and if I sound a little smug at times, I’m just telling it like it is.
In reference to Reid Sprague’s letter in your March 1972 issue concerning the advisability of swapping rear end ratios in his BMW R69S, let me say that I owned an R50S for some 40,000 miles and had similar thoughts, but in the opposite direction.
EARLY THIS year I devoted this column to observed trials, and the fact that it is our next boom sport in motorcycling. During my recent trip to Japan, I was pleasantly surprised to learn that the manufacturers are going ahead with trials development programs.
THE REPACKAGING of the motorcycle for the mass market is of great benefit, I suppose, but sometimes has resulted in a decline of brand individuality. There is a right way to do things, I know. Trouble is, when the masses are involved, manufacturers seem to use the same way even when it is different.
JIM RICE would not be denied his San Jose, even though it had been lengthened to a mile. Running fourth in the main event of the 25-mile AMA National, he clipped the inside rail with his shoulder. The impact pulled his arm from its socket. From then on, limited to one hand, he survived challenges from Kenny Roberts, Rex Beauchamp, and Dick Mann.
BANG WENT tradition in the 1972 TT races. Early morning practice sessions were abolished so riders and residents were able to sleep instead of rising for the 4:45 a.m. start which had become almost as much a part of the TT as the mountain course itself.
There Are Signs Of An Emerging Consensus That Plausible Indications Suggest The Tentative, Preliminary Hypothesis That Due Consideration Be Given To The Potential Propaedeutic Value Of A...
It has come to my attention that, with the rapid growth of motorcycling in recent years, there are many beginning cyclists who struggle along in innocent unawareness of even the most rudimentary elements of their sport, e.g., that much of the rigid body motion of a motorcycle can be understood in terms of the simple model provided by the rolling of the polhode in the vehicle's ellipsoid of inertia on the herpolhode lying in the invariable plane without, of course, slipping.
England's Big Bore Contender In The Dirt Racing Market Leaves A Fat Power Band And Good Handling As Its Calling Card.
WE TESTED the first AJS Y4 250cc motocross machine early in 1970. Certainly an impressive machine; our publisher, Joe Parkhurst, bought one for himself and has spent the past two years trying to wear it out. It's true that he doesn't ride it a great deal, but the Y4 has been very reliable and a pleasure to own.
...From The (Barring Further Changes) Site Of The Olympics Of Off-Road Motorcycling
LONG BEFORE Russ March and the AMA got interested in the International Six Days Trial, and long before any American would dare to publicly express the idea that Americans could do well in that prestigious event, there was Al Eames. Ai thought we may be could do something on an international scale, if we had experienced riders.
ONE OF the most important, yet most taken for granted parts of a motorcycle rider’s gear is his boots. Boots aren’t necessary to ride a motorcycle, but in competition they are required for safety. Even if they weren’t mandatory apparel, to try to race in anything but the proper type of boot would be foolish.
TWO NEW Yamahas, based on the highly successful 250cc TD3 and 350cc TR3 production racers, have recently been unveiled in Japan. The biggest difference in these machines is the incorporation of water cooling, a subject which is not new to Yamaha.
Or, How To Get There Safely, Quickly, Economically, And As Cleanly As If You’d Driven Your Car
PREPARING YOUR BIKE
MOST MOTORCYCLE enthusiasts require some form of dependable, daily transportation to get them to their place of employment. Why not turn this daily driving duty into fun by using your bike? I’ve been doing it for nearly five years. What can you gain from motorcycle commuting?
Watch Out, Yamaha, A New 250/350 Machine Is On Its Way To AMA Privateers
CARLO PER ELLI
THE 250 & 350 Aermacchi/H-D two-stroke Twins, which performed so well at the 50th Italian Grand Prix at Imola with Pasolini in the saddle, will be offered for sale in limited quantities. The Varese factory is famous for its support of the private rider and its successful over the counter 250,350 and 420cc pushrod Singles (now discontinued) and the 125cc two-stroke Single, the Golden Wing, have all done well in competition.
From The People Who Brought you Robert And Decoster, An "Unfactory" Motorcrosser For You, The Privateer
WINNING. THE NAME Suzuki is practically synonymous with that word when it comes to world championship motocross. And, it should be, because Joel Robert and Roger DeCoster neatly sewed up both the 250 and 500 classes last season. Winning, though, means a lot more than trophies and prestige.
ENTER THE Mazda-Mazda and the Ford-Mazda. Mazda calls theirs the Sport Truck and it’s all Mazda. Ford calls theirs the Courier and it’s all Mazda, too. They are like peas in a pod, with only minute differences in detail and engine specs. And both are a good deal for the motorcyclist who doesn’t want to invest three or four megabucks in a basic van or full-sized pickup.
FRANK COOPER got in on the ground floor of American motorcycling. 1946 was the year. Bikes were rigid in those days; mostly big Singles and Twins. In later years advanced technology made telescopic forks and swinging arm frames possible.
A custom contour diamond pattern seat for the Honda CB750 now is available from Suzuki Fun Center, 515 N. Victory Blvd., Dept. CW-9, Burbank, CA 91502. The seat is constructed on a 12-ga. steel plate with polyurethane foam padding, covered in black naugahyde. Felt undercover is utilized on the bottom plate to prevent frame scratches. The seat is available in 2-in. thickness for $39.50 or 4-in. for $49.50.
The new Gibraltar Cycle-Locker attaches to all makes of motorcycles, and features weatherproof locks and hinges. An optional 3-in, foam backrest also is available. The padded interior is large enough to hold two helmets and jackets or an assortment of other neces sities for the traveler. It's available in red, black or white, for $39.95, or $47.95 with backrest, from Gibraltar Plastic Products Corp., 12885 Foothill Blvd., Dept. CW-9, San Fernando, CA 91340.
Machined of top quality steel and featuring a distinctive 4-hole custom design, this new kick pedal for H-D 74s and Sportsters is chrome-plated and retails for $8.95. The pedal may be obtained from Wheel Specialties, 2131 S. Dupont Dr., Dept. CW-9, Anaheim, CA 92806.
THEFT-RESISTANT LOCK & CHAIN
Mountain West Alarm has developed a theft-resistant lock and chain for motorcycles. The chain is 4-ft. long, high carbon, 9/32-in. steel. Each link is wèlded from case hardened steel specially formulated to resist cutting with bolt cutters or hack saws. The blue-chromed chain is covered with tough plastic sleeving. The padlock is secured with a round key, 7-pin “pick resistant” cylinder. The hardened steel shackle and case are triple chrome-plated for maximum anti-drilling protection, lasting finish, and corrosion resistance. Hardened steel locking balls secure the deadbolt shackle at both heel and toe. Another hardened ball is incorporated in the keyway to foil circular drilling. The MW-015 security set retails for $16 from Mountain West Alarm, Dept. CW-9, 4215 N. 16th St., Phoenix, AZ 85016.
A transistorized emergency unit that switches on a powerful amber light when triggered by the headlight of an approaching vehicle has been developed by Pittari’s. The light keeps flashing until the vehicle has passed. It also features a built-in, white, steady beam, torch light and a magnetic clip attachment. The Blinki Lux is priced at $13.95 from Pittari’s of New York, 63-17 74th St., Dept. CW-9, Queens, NY 1 1379.
TWIST GRIP LEVERAGE
S&S Engineering has developed a grip which is said to provide more leverage for motorcycle throttles. The black ano dized, non-glare finish lever is clamped into place on the end of the throttle grip with a single screw. Priced at $1.95, the Twist Grip Lever is sold at most motorcycle dealers. Catalog No. 201-SF, available from S&S Engineering, Box 1646, Dept. CW-9, Thousand Oaks, CA 91360, shows its entire line of accessory and performance items.
An accessory panel for Honda 750s, 500s and 450s recently introduced by Big River Bike Products contains the ignition switch and a cigarette lighter. The unit mounts to the front handlebars using two bottom stock bolts. The cast aluminum panel is 8-in. across and a hole is predrilled for the stock ignition switch. No rewiring is necessary. A satin-finished raised area in the center of the panel for engraving, decals, or mounting switches is optional. The aluminum panel is finished in flat black and textured to prevent glare. Big River Bike Products, P.O. Box 4798, Dept. CW-9, Panorama City, CA 91412, sells the unit for $ 11.95.
AFS Distributors has just released a new catalog featuring a complete line of motorcycle accessories. Details may be obtained from AFS Distributors, Dept. CW-9, Lewistown, PA 17044.
Cycle Craft is offering a new line of accessories made from high-quality steel and fabricated to rigid tolerance controls, then chrome-plated with four coats of plating. Items shown include a motorcycle chain belt with buckle, dog bone, struts, tee mount, aluminum twig bar, and highway bar. Prices and information are available from Cycle Craft, P.O. Box 88, Dept. CW-9, East Hartford, CT 06108.
This solo saddle designed by CorbinGentry is for rigid or hardtail motorcycles. It is available with matching sculptured pillion for the fender. The saddle comes with bolts in the bottom for easy adaptation to any T-shape bracket kit. Details on the Dragoon Mark 2 saddle may be obtained from Corbin-Gentry, Inc., Route 83, Dept. CW-9, Ellington, CT 06029.
The Twist-Assist is a throttle helper device which mounts in the end of the right handlebar. The handlebar conceals everything except two washers and nuts, which cap a small shaft protruding from the end of the twistgrip. The unit is held in place by tightening a tapered expander ring into the tubular body while the Twist-Assist is inside the handlebar. When the unit is employed, less drag friction is said to be required to hold the throttle in place and it will maintain a constant position. The Twist-Assist is designed to fit all standard 7/8-in. handlebars and will adapt to small variances in inside diameter. It is available from CMB Mfg. Co., Box 57, Dept. CW-9, Tempe, AZ 85281, for $7.95 postpaid.
Dixie Tool & Die Co. has designed an enclosed chain guard to catch oil used for lubrication and eliminate the oil slinging problem. The guard is made of Cycolac and is said to be easily installed in minutes. The unit is priced at $32.50. Details are available from Dixie Tool & Die Co., Dept. CW-9, 1054 Douglas Ave., Aurora, II 60538.
Motocross shin and knee guards, molded of high tensile polyethlene, are being offered by Lynn Wilson Motorcycle Specialties, Dept. CW-9, Box 653, Chatsworth, CA 91311, for $ 15.95. The vented shin section is backed with blue felt padding, while the heavy-duty canvas leg sling has three adjustable elastic web straps. There’s also a leather antichafe guard for the ankle. A catalog featuring the guards and other motorcycle equipment sells for 50 cents.
WEIGHT WATCHER SPROCKETS
Circle Industries has developed the “Weight Watcher” aluminum alloy sprocket, with lightening holes to reduce the weight by a third. The sprockets are said to improve handling characteristics on the road, track or in loose sand. More information is available from Circle Industries, Dept. CW-9, 2636 Seaman Ave., South El Monte, CA 91733.
DIRT RIDER SPORTSWEAR
Wheat colored jackets and jeans made of tightly woven, heavy twill, 50 percent polyester and 50 percent cotton now are manufactured by Parr of Arizona. The washable material is said to provide great abrasion resistance while allowing the body to breathe. The jacket is available in chest sizes 36-44 regular and extra long for $16, while the jeans come in 28-36 waist sizes, uncuffed, for $16, or $1 more for finished bottoms, from Parr of Arizona, Dept. CW-9, 3803 N. 16th St., Phoenix, AZ 85016.
Casler’s new handlebar line offers both black oxide and chromed finishes and a standard cross brace. The bars are available in eight different combinations of rise, crown and width, and without the cross brace if desired. Details and prices may be obtained from Casier Motorcycle Accessories, 1031 W. Brooks, Dept. CW-9, Ontario, CA 91762.
Hercules Distributing, Ltd. now of fers the Preston Petty lightweight, plas tic number-plate tool box. The unit fastens to a bike's forks in seconds with non-slip plastic strips. Hinges on the sides allow the number plate to be flipped open for access to a tool kit. A foam block is provided to prevent the tools from rattling around. The unit sells for $9.95 and is available through local dealers.
Danner has introduced a motocrossstyle boot featuring Sieberling full composition soles with special heels for maximum gripping power. The 16-in. uppers are made of black, full-grained, oil-tanned leather with double vamps. There are no buckles or protrusions to catch on things. Available in two styles, the unlined model sells for $53 while the garment tanned cowhide lined model is $58 from Danner Shoe Manufacturing Co., 110 S.E. 82nd Ave., Portland, OR 97216.
FULL COVERAGE HELMETS
Buco has developed the full-coverage “Racing GT” helmet, featuring special colors and styling. A specially-designed “flare-out” scoop at the bottom of the face shield is said to make it aerodynamically sound, permitting high speeds without air pressure pushing the helmet up on the head. The custom design interior is fully lined and padded, with molded crown pad and ear-cheek protection. The helmet is certified to MS&ATA and Z90 standards and is AMA and SHCA approved. More information may be obtained from Buco Products, 7652 Burnet Ave., Dept. CW-9, Van Nuys, CA 91405.
Circle Industries is manufacturing quick change, tear-off lensed goggles allowing racers to have three lens changes during a race. The goggles feature automatic molded-in venturi ventilation, which is said to ensure fog-free vision. They come in regular and super wide models, or with an inner carrier for insertion of prescription lenses for those who wear glasses. Additional information is available from Circle Industries, 2536 Seaman Ave., Dept. CW-9, South El Monte, CA 91733.
A driving rain which forced a oneday postponement of the American Motorcycle Association sanctioned half-mile National Championship at Louisville, Ky., did little to distract from the excitement of the event as the California brother combination of Mark and Scott Brelsford flashed to impressive wins in the Expert and Junior final races, respectively.
Being a works rider is hell and paradise together, especially with MV. Take Ago, for example. After 10 world crowns, this year he didn’t start winning the “classic events” as usual. Saarinen, on the new water-cooled 350 Yamaha, had, in fact, beaten him (and his threecylinder mount) in West Germany and France.
It is a well-known jinx in Japan that no race is won by Honda in the presence of Mr. Soichiro Honda, the supreme leader of mighty Honda Motor. But, it was not the case with this year’s Japan Motocross GP which was part of the national championship series.