Frequently asked questions

Frequently asked questions

-What is the color of "At choise"?
-This means that the item is stored no painted, and we anodize it in the color you want on demand. This can take up to an additional couple days. The desired color is necessary to specify in the comments to the order. If the item is available in a particular color, it means it is ready for shipment.

-Can I use 10s chainring with 9s drivetrain?
-Yes, you can. 9s chain will have somewhat more freedom, but the difference will only be noticeable when riding hard. You can use 10s chain with 9s cassette - works without problems. 9s chainrings can not be used with 10s drivetrains.

- How to choose the size of the chainring?
- Chainring size should be selected on the basis of the fastest gear you use - it should be the last cog in the cassette. Many do not use 11t cog - it is said that the chainring should choose smaller. For MTB 26 "popular stars 32 and 34, 36-11 is already very fast gear, 38-11 spins on good roads. At 29" uses and 28t, and 26t.

- What are the Narrow Wide tooth chainrings?
- This is a tooth for a better hold of chain on chainring. Also the teeth have optimized profile and height, so this chainrings can be used successfully without a chain guide. The chain does not fall off even when used in Dh, proven! For a better chain tension is desirable to use an rear derailleur with medium (y Shimano called GS) or short cage depending on the cassette range. Using a derailleur with clutch (Shimano Shadow + and Sram Type 2) also reduces the срфтсу of the chain fall off, but this is not mandatory.

- Can I use the Narrow Wide chainring with front derailleur?
- No. These chainrings are created to best holding of chain on the chainring, so use them with the front derailleur is impossible. Attempts to use them with a derailleur may cause damage to the chainring or chain.

- Why oval chainrings?
- Legs do not force evenly over the turnover of the crank arm, at the top and at the bottom there is a "dead point", even with clipless pedals, even with good pedaling technique . In oval chainring radius varies depending on the position of crank arm, the "dead point" pass easier, and pedaling becomes more efficient and monotonous. At first it seems that the "pedal fail", but soon cease to notice it. If you have a lot of pedaling, especially in the hills, it is worth trying, it works.

- Why does your chairning ovality is only 15%, other manufacturers make 10-12%?
- Feelings of chainring depend not only on ovality, but also on the specific shape. Our chainrings have complex shapes with axes of the "oval" is not at 90 degrees. For our chainrings, we believe 15% is the optimum ovality, it does not have drawbacks. With less ovality less pronounced advantages oval chainring.

- Can I use the oval chainring with a rear derailleur with clutch (Shimano Shadow + and Sram Type 2)?
- Yes, you can, cage is moved slightly.

- How long should be the derailleur cage when using cassette extender?
- When using a single chainring is recommended to use the rear derailleur with medium cage (Shimano GS). Capacity of derailleurs with medium cage usually 35 teeth, range of 11-42 cassette is 31 tooth, so just.

- What is the difference between the one cog and three cogs cassette extenders?
- Three stars extenders: suitable for XT and SLX cassette, but not suitable for XTR because there on the spider two cogs. No big jumps between stars. XT cassette becomes lighter by 90 grams.
One star extenders: SLX cassette will have to unrivet. There is a significant gear jump on the place of removed cog, installling the 16t cog partially solves this problem. Cheaper than three cogs.