The first step in tuning the pilot circuit is, or any, carburetor is to get the idle circuit correctly adjusted. That means adjusting the idle mixture screw for the best idle. Keihin carburetors sets the idle mixture screw during assembly and seals the screw under aluminum plug to prevent an owner from changing the setting.
If the aluminum plug is removed, which can be done by carefully drilling a small hole in the plug, threading in a small screw, and then pulling out the plug, gently turn the adjusting screw all the way in until it bottoms. Then turn it two and a half turns out from the fully closed position.
Next, start the engine and bring it up to operating temperature. With the bike in the vertical position and the idle near 1000rpm, turn the idle mixture screw in slowly until the idle either slows or becomes irregular. Now turn the screw out until the engine again slows or begins an irregular idle, counting the number of turns between the too rich and too lean positions.
For things with a engine, Thailand is will known for two products around the world, the first is the amount of small motorcycles the second is the quantity of pickup trucks you see, it sometimes looks like everybody has a pickup truck.
Small engine motorcycles or scooters are great for transport in the cities, but are not that comfortable doing intercity travel.
So why not load the motorcycle in the back of the pickup truck, true but even if a small motorcycle doesn't weight as much as there big brothers, they still can be an uncomfortable load to get in the back of the pickup truck.
With two motorcycles in the back, driving upcountry on a highway, which seems endless to European standards.
There is an important axiom of performance work that many novice engine modifiers or builders seem to overlook: Once you've made an engine a performance fire-breather, some of the bike's engine mechanical components may need to be beefed up to handle the extra power, with the clutch usually being the first weak link.
Make no mistake: the OEM/standard clutch pack does an excellent job handling stock power levels, as well as quite a bit more. It has an easy lever pull, smoothly controls the engine's power, and sends all of it to the transmission.
Today Yamaha Motors informs us that whatever else you maybe doing on Monday 10 September, make sure you are ready to see the first looks of the introduction of the new 'European' motorcycles and scooters models.
Why this is so important, Europe is for motorcycles and scooters designs one of the most important markets for motorcycles manufacturers, it is simple if the design is not accepted in Europe its introduction is almost useless in most territories of the world.
Yamaha who not to long ago blessed us with the O so popular remake of the '50's retro style scooter model the Vino or for Thailand the Fino. Is expected to follow this success story world wide.
There are several ways to make something out of metal. The part can be stamped, cast, forged or machined. In fact, most motorcycle parts are a combination of more than one of these operations.
The chosen methods of metal working for a given part are usually based on economy of scale. If you are going to make a lot of a given part it is usually less expensive to have a set of dies made and cast it or forge it than it would be if you where machining it from a solid chunk of metal.
On the other hand, if you are operating in custom or small lot sizes then the CNC machines make a fully machined part not only possible but also cost effective. There is another reason to fully machine a part: if you need or want to possibly make changes to it design later on.
So what does all of this theory of metal production have to do with motorcycles? It explains why some would make billet heads and cylinders for their custom highly modified motorcycle engines.
When riding a motorcycle, we have to rely on one type of bearing or another. There are a few different styles of bearings employed in the smooth operation of any motorcycle. For instance, there are engine bearings - roller, ball and needle - that keep the internal components spinning in harmony. Wheel bearings allow the bike to roll down the road, and bearings on the front end allow the bike to turn.
The setup and maintenance of any bearing can extend or shorten its life, but especially so when it comes to the steering stem bearings of your motorcycle's front forks.
For the sake of this publication, we will limit our focus to the tapered roller bearing most commonly used since the introduction of the hydraulic front forks in 1949.
In 1885 Gottlieb Daimler patents what is generally considered to be the first true motorcycle.
Daimler, the automotive pioneer usually associated with building the world's first successful internal combustion engine (and, subsequently, the first automobile), staked his claim of priority in the two-wheeler world a year before developing his famous auto.
However, the idea of a motor-driven, two-wheeled vehicle did not originate with Daimler, nor was his the first such contraption to see the road. Sylvester Roper, who spent the U.S. Civil War working in a Union armory, built a primitive motorcycle as early as 1867. Roper's supporters - and he has more than a few - argue that he should be credited with building the world's first motorcycle.
Hundreds maybe close over thousand people lined up at Laan Kon Muang (the Civic Ground) outside Bangkok City Hall yesterday to get queue cards to buy discounted Royal yellow crash helmets bearing the emblem of His Majesty the King.
The first 10,000 helmets will be sold for the special price of 80 Baht per piece.
The Kawasaki Eliminator 125 embodies classic cruiser styling in a lightweight motorcycle with a low seat height and a friendly powerband. This makes it an excellent choice for new riders or anyone seeking an easy reach to the pavement.
Powered by an air-cooled, 125cc, four-stroke, SOHC, single-cylinder engine specially tuned for low and mid-range torque, the Eliminator 125 is perfect for around-town riding. The electric starter makes getting underway easy, and a convenient five-speed transmission allows the rider to use the engine's full potential.
The all new Suzuki Smash Revo, official this model is called the FK110SD-E model. I will agree that Smash Revo sounds commercially much better.
The weight and handling of the Suzuki Smash Revo is what you can expect from a 95 kilo, and a wheelbase of 1.23 meter. Nothing special about the handling of the bike, all we had the feeling that the 110cc engine was a bit more powerful then the average 110cc. Maybe the source for this extra power is the Mikuni VM-18 carburetor, the Mikuni VM-18 carburetor is often used in racing motorcycles. There are also special racing kits available for this Mikuni carburetor.