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Welcome to the coaching page. We hope to publish useful tips, tricks and links here that will help you become a better BMX Racer.
BMX in Canada typically runs from late spring to early fall (unless your lucky enough to have an indoor winter track you can ride). If you're serious about BMX racing and want to win more races then you need to keep training in the off-season. There are many ways to keep fit during the winter months, some better than others, and some depend on age. We'll start with some things that riders of all ages can do:
Not all riders are created equal. While BMX racing rules say you must ride a bike with 20" wheels (or 24" for the Cruiser class), that doesn't mean a 4 year-old would ride the same bike as a 19 year-old pro. To compensate for this, bikes (and their components) are built differently for different size riders. We'll concentrate on 20" bikes for the purpose of this article. The biggest differences are in the size of the frame, handlebars and the width of the wheels. There are actually 4 different common wheel widths that can all be classified as 20" wheels (the 20" refers to the height of the wheel). A mini BMX bike has wheels with a width of 1 1/8". A junior bike will have 1 3/8" width wheels. An Expert bike will have either 1 1/2" or 1 3/4" wheels. A pro size bike has 1 3/4" wheels. As you might have guessed, there are 4 different sizes or levels of BMX frames: Mini, Junior, Expert, and Pro. As a rider grows in size so will the frame size. The idea in sizing is to have a bike that the rider can handle easily and that is as light as the riders weight and skill will allow (thus the smaller and lighter wheels on the smaller bikes). A beginner or novice rider won't notice the differences as much and may be better off learning on a heavier, sturdier bike, but as their skill and experience grow a properly sized bike will make a huge difference. There are some general guidelines to follow when sizing a bike and it's components (remember these are only general guidelines), and the charts can be viewed below:
Gearing your bike can be an important component in bike setup. A shorter track (such as an indoor) may be better raced with a slightly lower gear (easier to pedal). When you want to get to that all important first corner with the lead proper gearing can help! A longer or faster track may require a taller gear. For every gear ratio (front gear to rear gear) there is a calculation that tells us how far we'll travel for each complete crank revolution. The formula changes with different wheel sizes, so a certain gear ratio (for example 44:16) will have a different result on a 20" wheeled bike than it will on a 24" wheeled bike. On your standard 20" BMX bike the standard gearing is a 44 tooth front gear and a 16 tooth rear gear. This gives us a gear ratio of 53.625. This ratio actually means that on a 20" bike with 44:16 gearing you will travel 53.625" for every complete revolution of your crank. To get the same ratio with a 24" BMX Cruiser you would need the following gear ratio: 41:18. This gives us 54.67" of travel (the closest you can get to the 53.625" of a 20" wheel). So what does all this math mumbo jumbo really mean? You might think, "If I can move farther using a taller gear, why shouldn't I just use like a 75:16 ratio and then I could move 93.75" for every crank and get to the first corner twice as fast?" The reason is this: As you increase your gear size the power required to turn the crank also increases. A rider can turn a single revolution of a crankset running 44:16 much easier and therefore much faster than even a 46:16 ratio, let alone a 75:16 ratio. You know what else? Crank length also plays a factor. The longer a crank is the easier it is to push a gear (get it started) but then you can't spin the cranks as fast as a shorter length. What about the rider themselves? A taller rider (with longer legs) can handle a longer crank. A stronger rider can push a taller gear easier. As you can see, it is a very complex issue! What it really comes down to is this: Most 20" BMX bikes come standard with 44:16 gearing. Many top riders use 44:16 gearing. Experiment! Not all tracks are designed the same so should you always use the same gearing on every track you race? It's up to you. If you're looking to gain an advantage over the next guy (or gal) you might want to think about gearing instead of that new set of $400 sealed bearing hubs. Click here for a printable gearing chart
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