Let me introduce you: the different types of dental trays for bicycles

Tooth disk everyone is strange, is riding a bicycle when riding, to the pedal pressure through the crank to turn the sprocket blade, teeth (t) number is the main difference between different teeth disk. Different dental discs have different effects on the characteristics of the bike and the riding experience.

Most road bikes come with dual teeth discs, the larger discs give you a larger, harder to turn tooth ratio, allow you to move further with each turn, and it's good for sprints at higher speeds (which don't last as long). The smaller platter gives you an easier tooth ratio to turn, but the pedal moves a shorter distance per turn - so it is suitable for riding at lower speeds, including uphill.

Standard disk

The standard dental disc has 53 teeth (or 52 teeth) large disc and 39 teeth small disc. This used to be the norm for road cars and the choice of professional drivers (who used larger platters for time trials or flat road stages). 53/39 dental disc is now rare outside the professional drivers, so the standard dental disc is actually a past name, and now ordinary riders are not equipped with the so-called standard dental disc. Both Shimano and CP only offer standard dental trays in their premium kits.

Professional drivers have more power and need more speed, so in Shimano's latest DA package, a 54/40 option is offered.

Compact dental disc

The compact disc has a 50-tooth outer sprocket and a 34-tooth inner sprocket. Compact dental discs are very popular because they are easier to turn. And with the popularity of high-tempo riding, this smaller dental disc is more popular and puts less strain on the knee.

A compact disc can be knocked out during a quick descent.

The three largest kit manufacturers offer compact dental discs in all of their road kits, which reflects their popularity.

Semi-compact dental disc

The semi-compact disc, sometimes called the mid-compact or artificial Pro, has a 52-tooth outer sprocket and a 36-tooth inner sprocket.

The semi-compact dental disc has become popular in the last few years and it has helped many amateur drivers progress.

Shimano and CP offer semi-compact dentals on all kits except the entry-level road kit.

Small dental disc

Smaller than the 50/39 compact disk are the small disk, they are usually 48/32 or 46/30, can lower the overall gear ratio a little, making the climb easier.

Gravel trucks and some hardtail mountain bikes are the main users of this type of gear, suitable for more complex, steep sections.

Triple disk

As the name suggests, the triple disc consists of three sprockets, and Shimano offers the option of a triple disc for low-end kits clairs, Sora and tiagra, not 50\39\30t. CP has until recently started offering Athena with 3 double dentals (52\39\30) for road cars. Superlink doesn't have that kind of system.

The triple disc has a very small sprocket blade, which also means that it has more repetitive tooth ratios, which is a good choice for a climbing bicycle such as a station wagon.

Single tooth disc

Superlink is the only manufacturer to offer a single-disc road kit. This setup is simpler, the chains don't rub on non-existent front picks, and they're quieter on rough surfaces.

Speedlink also says that the contact between the chain and the sprocket blade is better because their specially designed sprocket blade has a high, square tooth edge that engages the chain earlier.

This 1x system is rare in road vehicles, but it has a good application effect in gravel and off-road vehicles.

Sprocket change

Today's die trays are relatively simple to replace (requires an Allen wrench), so make sure your new die trays are compatible with the drive system (sprockets have different bolt diameters (BCD) and bolt spacing), and you can turn a standard die tray into a compact die simply by replacing the die trays. Don't forget, if you change the sprocket, remember to adjust the position of the front wheel and the length of the chain.