Maximum temperature yesterday: 59 Â°F (at 8:54 am) Minimum temperature yesterday: 45 Â°F (at 12:54 am) Average temperature yesterday: 55 Â°F. Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals...
Four popular bicycle frame materials are steel, aluminum, titanium and carbon fiber. Beryllium, Metal Matrix Composites and other materials have so far demonstrated limited practicality in bicycle frames. Mysterious and seemingly miraculous beryllium is one-third the weight of aluminum and six times as stiff as steel.his is another reason to look for metal frame parts (such as dropouts) that are made of titanium rather than aluminum if you are shopping for a carbon fiber bike. Discontinuity of materials can create stress-risers where the carbon fiber meets the other material. The stress-risers can lead to failure.
They usually have 20-inch wheels (24-inch-wheel cruisers are the exception), knobby tires, upright handlebars with crossbars, small saddles, long cranks and rear hand brakes. The frames are light and sturdy, and the higher the price, the lighter they get. BMX bikes are generally made of chromoly steel or aluminum.