NCAA - DUAL CHAMPIONS!
Join Date: Mar 2000
Location: From Sarasota, FL sitting in front of a computer spewing random thoughts!
Bikes: Intense Uzzi SL, Masi Speciale, Trek 3700 Nashbar Single Speed, Old Cilo Road frame
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Just like road bikes or mtn bikes, there are many genre's of BMX bikes.
Dirt Jumpers, are super beefy and heavy, usually only a rear brake and built to handle serious abuse.
Freestyle and Flatland bikes are also heavy with 48 spoke wheels, axle pegs...etc. Geometries are different than a DJ bike.
BMX race bikes, are built light and nimble.
The two most common materials for BMX bikes are Chromoly Steel and Aluminum. Chromo bikes are much heavier and chromo is the choice for a frame that is designed for some serious abuse.
Aluminum is becoming more popular, even for some DJ bikes with the addition of huge gussets welded at critical areas. For lighter weight BMX race bikes, they are predominantly Aluminum, and now a trend towards Titanium (high modulus of elasticity and good strength to weight ratio)
Similarly, there are many genre's of mtn biking these days;
cross country (XC), Freeriding (FR), Dual Slalom (DS), Downhill (DH), Dirt Jumping (DJ) and even Singlespeed versions of these (SS).
With mtn bikes, you will see frames of Aluminum (majority), steel (chromo), Titanium, Carbon Fibre,....etc.
The big difference b/t a BMX and a Mtn bike is one, the size of wheels. BMX has 20" and 24" wheels. Mtn has 26" mostly, some DJ, and DS are using 24" and a few XC folks are trying out 29" wheels.
A newer mtn bike usually has gears (usually 24 or 27 speed), and some form of suspension (front or/and rear). With a BMX bike your rider position is more upright, with mtn (XC for instance) is more stretched out. However, the FR and DH also requires a more upright postion.
O.k., getting confusing.
A BMX bike is smaller and built for shorter rides, sprint races, or tricks.
A mtn bike is designed for longer rides, climbing and descending and usually bigger!
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger