It is impossible to turn a bike with two asterisks in the sports multi-speed. However, a simple upgrade at home will help improve the speed performance of even the most simple of bike.
Replace the wheel of the bike on easier. Pick a convenient for you lightweight seat. Try not to give up wings. In dry warm weather they are not needed, and the mud and slush you will be able to return the wings into place. These changes will increase the speed of a Bicycle by reducing its weight.
Put in place common contact of the pedal. This will allow you to overclock the bike is not only pressure on the pedal, but pushing the pedal as it moves upward. However, to use these pedals will have to buy special shoes.
The sprocket on the front wheel of the bike try to replace the asterisk with an increased number of teeth and a sprocket of a back sprocket to replace the sprocket with a reduced number of teeth. Usually on a sport bikex forward put the gear on fifty-four prong and back — in thirty-six teeth. When this upgrade is harder to pedal when going uphill, but can increase the speed of the bike.
The diameters of Bicycle wheels vary from 20 inches to 28 inches. Large wheels allow you to increase the speed of the bike, but pedaling will be heavier. In addition, a Bicycle with large wheels are more stable. Large wheels provide better maneuverability, as the wheel can overcome the obstacle of no more than 1/3 of the wheel diameter.
You can go ahead and completely self-assemble a Bicycle, choosing the most suitable to your requirements accessories. It is important to know what bike you want to get a result. Maybe like in the song Dolsky with a triangular wheel from Picasso and van Gogh's provençal bell?