Road Bike Gear Sets Explained

A road bike s groupset or gruppo refers to any mechanical or electronic parts that are involved in braking changing gear or the running of the drivetrain. Part of the problem of a hub gear is that it adds weight at one end of the bike which can lead to unbalanced handling. Instead a gearbox is integrated directly into the frame with the weight.

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A bike with only 11 gears can potentially have the same high and low span as a bike with 30 gears.

Road bike gear sets explained. The tiagra is the 4600 you are talking about but was upgraded to the 4700 tiagra in 2015 after a much needed overhaul. If you are a keen time trial rider then you may want to opt for a standard crankset as it will give you a higher top gear. The gear range refers to the span from the very hardest high to the easiest low gear. For a full explanation of how the different systems change gear read our detailed article on how to change gear on a road bike.

The 2400 is a claris groupset which is on the bottom of the hierarchy for the road components offered. The shimano road bike groupset hierarchy is as follows. One full revolution of the pedals will result in one full revolution of the wheel. Claris 2400 8 speed only sora 3500 9 speed only.

Up until the early 1990 s gear shift levers were normally located on the downtube of the bike and relied on friction and a fair amount of rider skill and feel to select the appropriate gear. Now shifters are incorporated into the brake hoods on road bikes and trigger style systems on mountain bikes and hybrids and use a ratchet mechanism that controls cable tension and means that one click. Road bike buying guide it s easy to switch off and just ride with whatever gearing came on the bike and you can do that you ll probably get on just fine with a standard issue set up. My first bike had an 11 28 but i really like keeping a high cadence on the hills so on my new bike i have opted for 11 32.

This means i still have a nice fast high gear but the lowest gear is significantly easier to pedal. In simple terms a gear ratio on a bike refers to how many times the back wheel will rotate for each full turn of the crank arms pedals. Road bike brakes explained. The number of gears is calculated by multiplying the number of cogs at the back wheel cassette with the number of cogs chainrings at the front crank.

If we have a chainring with 30 teeth and a sprocket with 30 teeth there is no difference between the two. Road bike wheels buyer s guide videos a high gear sometimes referred to by cyclists as a big gear is optimal when descending or riding at high speeds. However making changes can make a big difference for your enjoyment and performance either transforming your ride if you struggle on hills or making your cycling more efficient. Road bike shifters explained.