ON YAMAHA DIRT DAYS AND A NOTABLE SAFETY FILM ENTITLED “THE EXPERT RIDER.”
IN RECENT HISTORY, the motorcycle industry has managed to grow a considerable amount each year. But as I recall it, the industry has done little in the way of promotion. It was the enthusiasm of the people riding that turned public attention toward two wheels.
Up here in the frozen waste (at least temporarily), motorcyclists find themselves with a great deal of time on their hands. This time is usually spent polishing and polishing and polishing their machines and wistfully awaiting the spring thaw.
DH Enterprises manufactures an unusual “performance” accessory for Yamaha RD250s and 350s. The company’s reed spacer kit is not designed to pump more power into the already potent Twins, but rather to make them easier to ride on the street.
I would like to commend Yamaha on the 1974 DT175A enduro motorcycle. I bought mine in March 1974 and I have to say that I have had nothing but good luck with the machine. After 7000 miles on it I have just changed the rear sprocket, countershaft sprocket and chain, which were the original parts on it.
THE FIRST-ever World Trials Championship got off to a good start with three different winners in the first three rounds. The first was held outside of Belfast, Ireland, and, considering the strife in that area, it was not surprising that many Europeans did not compete.
Many more improvements than just those that meet the eye.
THIS YEAR it wasn’t so easy. Public pressure dictated to the manufacturers that they had to do something to the rear suspension of the ‘75 bikes if they ever expected to sell them. Just about everyone has given in. Long-travel rear suspension is here to stay.
Speed, concentration and dedication are the ingredients...
8000. . .9000. . .10,000. . .15,500; shunch, third gear; 8000. . .9000. . . 10,000. . .10,500; shunch, fourth gear; 8000. . .9000. . .approaching the end of the straightaway, got to get past the number three man, otherwise you’ll be stuck in the semi-main.
AUTOMOTIVE ENTHUSIASTS won’t have any trouble remembering what was done to some of their favorite marques under the guise of plushness, comfort and luxury. . . not to mention federal emission laws. We watched classics like the two-seater T-Bird turn into lumbering rhinos carting their heart-attack-prone, paunchy owners back and forth to their high-level office buildings.
Look out, Cosell, we may be in for Monday Night Motocross.
Act I—The Happening
Act II—The Place
Act III—The Finale
Super Series II
Michael A. Brown
THE EUROPEANS invented motocross, but the Americans, with their penchant for comfort in an “easy chair” fashion, have created the first predominantly indoor motocross series—the Yamaha Super Series of Motocross. Last year there were two parts, Daytona and the Houston Astrodome; this year, Texas Stadium in Dallas-Fort Worth was added.
PIERRE KARSMAKERS is much more than just a very successful American motocrosser. Pierre's life has been full of controversy since he left his native Holland in 1972, came to America to live, and called himself exactly what he now is-an American motocrosser.
I suppose it was sometime last year that I began thinking about riding in an ISDT qualifier. Enduro riding had become somewhat of a passion with me because of the varied offerings of terrain and new trails. But the timekeeping aspect of the typical enduro was a big fat zero; I didn’t like to keep time when I started riding enduros, and I like it even less now.
BULTACO’S ALPINA MODELS are peculiar in a way, peculiar because they are Bultacos. If that sounds like a strange statement, let us explain. Senor Bulto is in the habit of building motorcycles for a very specific purpose: like trials, motocross or enduros.
No word yet on whether the 250 and 400 Suzukis will receive the same engine and suspension treatments that the 125 did. Certainly couldn’t hurt the bigger bikes, 'cause it sure works neat on the smaller one. Got our Yamaha 125 Monoshock test bike about two weeks before deadline.
An enduro machine that lets you concentrate on the terrain.
ROKON 340 AUTOMATIC
ROKON IS A NAME none too prominent in the motorcyclist’s vocabulary. Even so, it is the second largest of American bike makers. Harley-Davidson is, of course, the biggie. But unlike H-D, Rokon limits all of its production and development efforts to the off-road market.
YAMAHA'S DT400 IS as bullet-proof as they come. But it, just like any mechanical device, requires periodic maintenance, as well as an occasional major service. The amount of time spent on this service varies not only from bike to bike, but also has a great deal to do with the type of riding that the bike is called upon to do.
ILC Dover announces a new Flip-Band that converts all popular five- and three-snap face shields to flip shields. The ILC Flip-Band features rugged construction, quality engineering and adjustable snaps to fit all popular commercial helmets and face shields. The Flip-Band provides a solid fit with the ease of a self-lubricating flip-up action. The positive two-position stop action locks the shield up or down. ...no rattling. Constructed of strong aluminum bands, the ILC Flip-Band will retail for a suggested $4.95. Contact ILC Dover, Dept. CW-7, 350 Pear St., Dover, DE 19901, for further info.
The latest thing from Jacwal, the Superchain people, is the first “bolt-on” cast alloy wheel set. Now you can save $150 or more off the cost of fitting a set of light alloy wheels to your superbike. There’s no need to buy a rear disc brake system to fit such wheels. The Jacwal 18-in.-spoke “Mags” bolt right on to Honda 750s, Kawasaki Z1s or 750 Suzukis. The rear brake hub fits the existing brake backing plate and sprocket drive. The front wheel accepts either single- or dual-disc systems. For more information and prices, write to: Jacwal Corporation, Dept. CW-7, 13310 Mapledale St., Norwalk, CA 90650.
The first of Goodyear’s Eagle line of motorcycle tires built specifically for the growing sport of motocross is the Eagle MX. The MX’s four-ply construction is designed to give a flexing side wall that results in maximum traction on the twisting, up-and-down motocross courses. The six-pointed lug tread, more than a half-inch deep, is designed to grip in dirt, mud or gravel and to self-clean. A look-alike companion to the MX is the Eagle D/S tire for desert racing. While the tread pattern is the same as the MX’s, the D/S tire has six plies of nylon that make it better suited to withstand the tire torture terrain of Baja. The D/S has been on the winning bikes in such endurance runs as the Baja 1000 and the Mint 400. The MX is produced in five sizes: 3.50-18, 4.00-18, 4.50-18, 3.00-21 and 3.50-21. The D/S is available in three: 4.00-18, 4.50-18 and 3.50-21.
A newly formulated fork fluid has been announced by Freedom Industries. The new product has been scientifically formulated to give consistently smooth fork action in all weather and temperatures and under all riding conditions. There is no viscosity change and no foaming. The formula is said to contain additives to protect and preserve seals and virtually eliminate leaking year after year. It’s race proven. Freedom Fork Lube contains silicone and moly in colloidal suspension. It will not settle out and dry up in the bottom of fork sliders. Available in a 16-oz. can with a graduated lid, Freedom Fork Lube goes for a suggested retail of $2.98. For more information on this and other Freedom products, contact Freedom Industries, Dept. CW-7, 13930 Stansbury, Detroit, MI 48227.
Trim Leathers and Buco helmets
American Pro, a division of CBM Inc., has introduced complete, color-coordinated rider accessory outfits that feature Norstar/Munari boots, Trim Leathers and Buco helmets, plus jerseys, socks and even a protective boot bag. Both MX and enduro type boots are being offered in this new American Pro rider accessory package. The Trim Leathers have the exclusive “expandex” vacuum system and are double-stitched for durability. The pants also feature plastic knee cups, elasticized waist band and full padding at the hips. American Pro helmets have a matching, screw-on duckbill that is easily replaceable. A foam lining between duckbill and helmet keeps dirt from falling through. The helmet also has a double-vector strap and removable protective mouth guard. Also included with the rider accessory outfits are open-weave-knit, moisture-absorbing, 50-percent cotton jerseys and 25-in., double-cushion socks. American Pro offers a choice of two color-coordinated combinations: black, yellow and red, or white and black. For complete details, write American Pro, Dept. CW-7, Emerald St., Keene, NH 03431.
Bassani Manufacturing announces its new quiet pipes for Yamaha RD350 and 250 models. These downswept pipes look similar to the TZ350 Road Racing pipes and fit close to the machine, giving added cornering clearance. They are designed to fit between frame tubes, not through the footpegs. It is claimed that you will gain 12 to 15 percent hp and anywhere from 6000 on up to 10,000 rpm—plus a quiet exhaust note of 85 to 86 db—with this Bassani system. The pipes are easily installed to your motorcycle. To extract maximum performance, some tuning or rejetting may be required. Available in hi-temp black finish, this new Bassani system sells for a suggested retail of $130 at your motorcycle dealer or from Bassani Manufacturing. Contact them at: 3726 E. Miraloma, Dept. CW-7, Anaheim, CA 92806.
His and hers tank tops and halters by N.B.C. are now available for motorcycle enthusiasts of all ages. They’re a great way to survive a sizzling summer. Both tops are of 50/50 cotton polyester jersey and are available in light blue or yellow. Each shirt is emblazoned with a striking multi-color design and any one of 18 motorcycle names. Tank tops are available in adult sizes S, M, L and XL; halters come in one size that fits all. The price is $4.75 for tank tops, $4.95 for halters, or $9.50 for both. Order yours from N.B.C. Motorcycles Import Inc., Dept. CW-7, P.O. Box K, 111 Rt. 50, Mays Landing, NJ 08330.
ILC Dover announces a new Flip-Band that converts all popular five- and three-snap face shields to flip shields. The ILC Flip-Band features rugged construction, quality engineering and adjustable snaps to fit all popular commercial helmets and face shields.
Emergencies in which you need to quickly turn a bike are rare. They tend to catch you by surprise. You may already be in a turn, just entering one, coming out of one, or going straight. Whatever the case, you either have to turn a little, a lot, or merely change the degree to which you’re already turning.