Zarnoff Bike Blog
20Nov/090

Tips To Understanding The Basics Of Mountain Bike Gears And How They Work

Remember when you didn't think about the gears on your bike? Your bike had a bike sprocket connected to the pedals and a small sprocket connected to the back wheel an that's all you needed. Then you got a little older and got your first 10-speed. That bike had two sprockets up front and five on the back. In all likelihood, the shifters were a pair of levers connected to your bike frame near the handlebars. As time went on the shifters moved to the handlebars themselves and then became advanced-looking dials right beside the grips. And next thing you knew, instead of a paltry ten speeds on your bike, you were riding a 27-speed mountain climbing machine!

Why all these gears? To make riding faster and easier, of course. Whatever the number of gears your bike has, if it has 2 or more then there's a basic set-up which almost every bike employs.

First of all you have your front and rear sprockets. These, along with the chain, form the most basic components of the gearing system. To determine your gear ratio you compare the number of teeth on the front sprocket to the number of teeth on the rear sprocket.

If your front sprocket has 52 teeth, and your rear sprocket has 20 teeth, then you're looking at a ratio of 2.6. The higher the ratio the faster the gear. Typically the gears on the front, starting from the inside, get larger as you move out. On the back wheel, though, the largest gear is typically the farthest inside and they get smaller as you move out.

The next key component for your mountain bikes gears is the derailleur, or derailer. The derailleur is what moves the bicycle chain from gear to gear. A typical shifting system employs both a front and rear derailleur. Without the derailleur you wouldn't be able to shift gears. The derailleur consists of pulleys and the cage, which is the part which actually comes into contact with the chain. The pulleys are attached to the gear cables. There are separate cables for the front and rear derailleurs. The gear cables connect to the gear shifters.

There are a variety of gear shifters available today and they cover a wide price range. The gear shifter is what allows you to change gears. The first type of shifters were levers known as friction shifters. These worked simply by pulling the cables attached to the derailleurs.

Friction shifters can be troubling because the way they're designed you can easily get caught between gears and accidentally damage your gears or even wreck. The more advanced variety of shifter is known as the index shifter.

Index shifters have specific stopping points and are calibrated to perfectly shift from gear to gear. They remedy the drawbacks of the older friction shifters. Gear shifters may be placed anywhere from the frame to the handlebar base to the grips to models which seem to be part of the brake levers.

Mountain bikes have multiple gears to make it easier for you to negotiate difficult terrain. Higher gears are there to help you speed downhill or across the flats, and lower gears are there to help you surmount those difficult inclines. Remember, it's best to shift gears when you're not putting a lot of stress on your pedals. Shifting when there's heavy pressure on the pedals can damage your shifting system.

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11Nov/090

Why Proper Lubrication Is Crucial In Mountain Bike Maintenance

More and more people are getting into mountain biking. Very few people, though, properly maintain their bikes. One of the most important aspects of mountain bike maintenance is lubrication. Keeping your bike's moving parts well-lubricated will help keep your bike in top shape for a long time. Failing to keep your bike properly lubed will lead to a shortened lifespan for your bike and its parts.

The most basic advice to heed when it comes to keeping your bike lubed, is that if there's a moving part, it needs to be lubricated. There are some parts which are best left to the experts. It's unlikely that you'll want to pull the bearings out of your headset or from inside the front crankshaft or hubs, but there are plenty of parts which are easy to access and which appreciate a regular and thorough lubing.

When purchasing lube for your bike, it's advised to buy a product specifically designed for bikes. They're perfectly formulated for the specific needs of bicycles. These lubricants typically come in drip or spray dispensers.

Now take a look at your mountain bike's derailleurs. If you're having trouble with shifting gears, then there's a good chance your derailleurs need some lubrication. In case you don't know, the derailleur is the part that moves the chain from gear to gear. Wherever there's a movable point on the derailleur, apply lubricant. This includes the little adjustment barrel. Some lube there will keep it from rusting and making it impossible to adjust.

Turn your bike upside down, move the pedals and shift gears. Wherever you see the derailleur moving and exposing sections, add some lubricant. Don't overdo it, though. Wipe up any excess drips.

Another important place to apply lube is the chain. A well-lubricated chain will last a long time and it will shift from gear to gear easier. Either turn the bike upside down or mount it on a rack if you have one, and slowly crank the pedals. As the chain cycles around, apply lubricant by either spraying it or dripping it on. Wipe off any lubricant which accidentally lands on the frame or anywhere else.

The pedals can also use a regular application of lubricant. Of course you don't want to put any on the pedal grips unless you have cartoon capers in mind, but you do want to apply some to where they attach to the cranks.

It may surprise you to hear that the brakes require lubrication. You don't want to get any grease on the brake shoes, though! Keep the lube away from the rims, too. Where you do want to apply lubricant is on the pivot points where the brakes move. Wherever there's a moving joint or metal on metal, you want to apply lubricant. The brake levers themselves can use some lube, too. Again, you'll want to apply it on the pivot points on the levers and not the lever itself.

A well-lubricated mountain bike will last longer than one that's neglected. It'll ride nicer, too. Remember to regularly lubricate the parts you can easily access and talk to your local bike shop about further mountain bike maintenance.

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22Aug/090

Why The Mountain Biking Phenomenon Is Growing In Popularity

Mountain biking has taken the cycling world by storm. It wasn't all that long ago when the phrase "mountain bike" would've elicited blank stares. Now you see them everywhere. Mountain bikes are made to handle almost every terrain imaginable, and that's why they've become so popular. Just like SUV's, most people who use them don't have a need for their full range of functions, but it's good to no the capability is there "just in case".

Mountain bikes are nice even for the urban rider because they eliminate the worries one might have when encountering potholes, gravel, and bad road conditions. Mountain bike riders utilize their bikes for a wide range of activities and competitions. A number of races and competitions have sprung up to make use of the mountain bike's many capabilities.

One such extreme mountain bike competition is known as cross-country (or XC) races. Cross-country mountain bike races usually cover about 30 miles and cover a variety of terrains. These races feature a mass start with all the riders taking off at the same time much like a marathon.

If cross-country races are too short for you, there's always endurance (or enduro) racing. These races cover in excess of 70 miles and climb to elevations of 8000 feet and more.

For the real maniacs out there, the only way to go is downhill racing. Downhill races typically have staggered starts to try to minimize crashing, but as you can imagine, crashes are a regular part of such events. The racers fly down the hill at breakneck speeds, the key being to have the fastest time down the slope. Many of these races are held on ski slopes during the warmer months. Such competitions demand that the riders have the utmost skill and experience as it can be an extremely dangerous endeavor. These races aren't for novices.

A competition rapidly growing in popularity is dirt jumping. This will be familiar to BMX enthusiasts as it's essentially the same sort of competition. Such events aren't races, of course. They're judged events wherein riders compete to accomplish the biggest, most amazing jumps involving spinning the bike in the air, doing flips, and even completely letting go of the bike and getting back on before it lands.

Another form of extreme mountain bike competition is bike trials. These events involve navigating unbelievable difficult terrain without touching your feet to the ground. Bike trials require riders to balance their mountain bikes on rails, boulders, posts, tree stumps, and any number of seemingly impossible obstacles. The goal is to finish the course quickly and without having to put your feet down.

If any of these extreme mountain biking competitions appeal to you, start practicing and getting into shape. These events are for skilled and experienced riders only. They're physically demanding and fairly dangerous. They are not for novices. Remember to wear a helmet and pads when attempting crazy stunts on your bike, and take care of yourself if you're going to attempt extremely arduous long-distance rides.

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18Jul/090

A Look At Some Of The More Common Mountain Bike Designs

Mountain bikes are designed for off-road riding. Whether made for racing or the more leisurely rider, there are four basic frame designs for mountain bikes: rigid, hard-tail, soft-tail, and full suspension.

The rigid (also commonly known as fully rigid) mountain bikes resemble a conventional sort of bike as you would imagine it. A rigid mountain bike has neither a rear suspension nor a front suspension. These used to be the most common kind of mountain bike but they are rapidly being replaced by the more comfortable models which feature some sort of suspension system. Fully rigid bikes tend to be lower-priced than models with a suspension. Many riders still prefer rigid bikes because it's what they're accustomed to, and the feel that the rigid design allows them greater control.

Another common mountain bike design is the hard-tail. Hard-tail mountain bikes are so named because they have a conventional rear end without a suspension. Hard-tails differ from fully rigid bikes in that they have a front suspension. The hard-tail is perhaps the most popular mountain bike design. Many professional riders prefer the feel of a hard-tail and the comfort of a front suspension.

The next kind of mountain bike design is the soft-tail. As you probably guessed, soft-tails employ a rear suspension. Rear suspensions are a more recent innovation than front suspension due to the complexities of the design. Soft-tails are often more expensive than hard-tails, but they also tend to be more forgiving.

Finally there's the full suspension mountain bike. Bikes with this design feature both front and rear suspensions. These bikes are the latest mountain bike design. For a long time riders avoided full suspension bikes because they were heavy and they tended to sag in the middle like an old swayback horse. It took years for engineers and riders to perfect a viable, functional full suspension mountain bike. It was in the 1990's when these bikes finally reached a point where they were marketable.

In addition to the frame and suspension, there are other differences in mountain bike designs. One key area where bikes differ is the brakes. Mountain bikes either have some form of caliper brakes, which are the kind of brakes typically associated with bikes. This kind of brake squeezes the rims to slow and stop the bike. The other type of brake is the drum brake. Drum brakes on bikes are similar to the braking system on automobiles. Drum brakes are more expensive than caliper brakes but they're also easier to maintain. Mountain bike braking systems have even been made which utilize hydraulic power.

Another area where you have some choice in mountain bike design is tire size. Mountain bike tires typically range in size from 24" to 29". Smaller tires are used when greater maneuverability is required as in stunt-riding and jumping. Larger tires are used when speed is the key.

As with any other important purchase, do your homework before buying a new mountain bike. Think about your needs and your budget. Mountain biking is a terrific past-time. It's a fun way to get some fresh air, enjoy the outdoors, and improve your health.

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3Jun/09Off

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13May/09Off

PACE BIANCHI CYCLING CAP HAT BIKE FIXED GEAR WHITE/BLUE

US $10.82
End Date: Thursday Jun-04-2009 16:30:37 PDT
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