If you're on a fixie bike, if you start riding,"Gear ratio"and"Skid point"Is the knowledge that you want to remember first.

First, "gear ratio"

This indicates "how many rotations the rear wheel rotation when the pedal is turned one rotation" is "number of teeth in the chainring / number of cogs = gear ratio". For example, in the case of a chain ring (48t), a cog (16T), → 48 ÷ 16 = "3.00", and when the pedal is turned once, the rear wheels are perfectly 3 turns.

It is also a common "weight when you step on a pedal".

Even if you feel the same gear ratio, each person is different, soFinding the best gear ratio for you begins to associate with a fixie bike.The gear ratio of general city riding is about 2.7-3.1, but if the gear ratio is too large for your leg strength, it is not enough even if it is too small.

It's important to find the right gear ratio for yourself. The gear ratio is attached below, so please check your gear ratio.

And "skid point"

First, a skid is a drift -like trick that makes use of the nature of the fixing gear unique to the fist.

"Skid point""How many tires can be cut when skids at the same pedal position?" The gear ratio above 3.00 is perfect for the pedal one turn, so the skid point is "1". Only one tire can be cut. The more skid points, the more you consume the tires, so you can use the life of the tires as much as you want. in shortSkid points are simply better.

The calculation of skid points is a bit confusing, so please refer to the quick reference table below.

The table summarizes the above -mentioned "combination of chainring and cog with more than 10 skid points in the gear ratio (2.7-3.1) suitable for town riding".

The place where it turns blue is the recommended gear ratio.

The 17t cog is the most convenient and easy to find the optimal gear ratioDo you understand that?

Finding a "gear ratio that is just right for yourself" needs to change parts several times.

To finish with as little trouble as possible

① Cog to 17T

② Chain ring enlarged (small)

I think this order is good.

By the way, the combination of the gear ratio "48T/16T", which is common in the finished car of a fixie bike, is 3.00 gear and a skid point. If you are riding a completed car with this gear ratio as it isFirst, change the cog to 17T.

Then the combination48t/17t. The gear ratio is 2.82 and the skid point is 17. To get a skid tips, you'll have a slightly lighter gear ratio, and you can use up the life of the tires. And once you get a 17t cog, you won't have to change it in the future. It is extremely likely to keep using it forever. So, I want you to use something a little good for a long time.

Here are some recommended cogs.

EURO-ASIA DLX

It is a standard cog. The lineup of the number of teeth is eg.

EURO-ASIA SUPERSTAR

It is a model with chrome plating on DLX. The price is doubled, but many people use it more than DLX. By plating, the durability is of course better, and the chain will move smoothly.

EURO-ASIA GOLDMEDAL

It is a model that has a gold plating on DLX. The price is tripled, but please think that it is 3 times better. This is a special version with a different color ink depending on the number of teeth.

Digiriit Track Carbon COG

A brand Digirit carbon trackcog that appears in the truck world like a comet and quickly made its name in the world. According to the manufacturer, the track competition player practiced and continued to row tens of thousands of kilometers in the setting of gear ratio 5 and did not wear it. And silence.

NovaCorona Titan COG

It is a popular titanium cog recently. The weight removed to the limit is less than half of EURO-ASIA GOLDMEDAL.

A dedicated tool is required to attach the cog. One of the must -have for fixing rides.

Velobike Track Sprocket

A brand "Velobike" from New Zealand, which develops parts from the athlete's perspective.

The price is reasonable and the quality is high. It is a very good cog with a very good cost performance.

If you want to change the gear ratio into a trial, this cog is recommended.

SHIMANO SPROCKET REMOVAL TOOL TL-SR22

Those who are used to fixed gears and want to try skids, or those who have tried but can't do well. Also, those who are not enough or too heavy now.Even bicycles bought at other stores are welcome at all, so please feel free to contact us.

Junki