Attaching your chainring to the crank arm: the best options for single chainring setup

Rotor Bike Components
1st July 2020

If in the previous ROTOR blog post we explained all the options for choosing the best combinations of single chainrings for mountain biking, this time we want to go a little further, so that you also know some of the most important mounting options for ROTOR, if you want to change to a single oval chainring or not, or simply want to change the one you currently use.

It is one thing to choose the right number of chainring teeth for your transmission and another is to know what types of mounting options you have available through ROTOR. You may already be using some of our multiple crank systems with or without a powermeter, or you may already know the virtues of the ROTOR oval chainrings and need to change yours.

OVAL CHAINRING MOUNTING OPTIONS

One of the most interesting and versatile options from ROTOR is the direct mount system DM (OCP Mount) without bolts, which mounts directly to the crank arm, and that in addition to the oval shape of the chainring itself, the micro adjustment system allows you to have more control over the adjustment, in ranges of 0.25 degrees until reaching 0.75 degrees. This will help you fine-tune where you want to position the maximum point of ovalization when pedaling. These types of chainrings are offered for mountain bikes in tooth combinations from 26 to 40 in two-tooth increments and for road and gravel from 38 to 54, also in two-tooth increments.

In this system you also have the DM spider with a 110×5 BCD available, which allows you to adapt your chainrings with this BCD size to the OCP Mount system using an extra spider.

But if you also use another brand of cranks, but want to use our oval chainrings, at ROTOR we give you a lot of options. In direct mount you have oval chainrings for ROTOR REX cranks, for Race Face Cinch, SRAM GXP, BB30 and Boost systems and for Shimano 12-speed cranks.

Also within the options of single oval chainrings, you have two more options; On the one hand, the Q Rings QXI BCD 76×4 chainrings with three-position OCP system with compatible spider option for ROTOR, SRAM, Specialized and Cannondale F-SI Ai cranks. From 30 to 38 teeth in increments of two teeth. On the other hand, you can opt for the Q rings Spider Mount 110×4 MTB IX chainrings, perfect for mountain biking and compatible with all ROTOR, INSPIDER, KAPIC, KAPIC CARBON, RHAWK and RRAPTOR modular cranks. They are available in sizes of 34, 36 and 38 teeth.

STANDARD CHAINRING MOUNTING OPTIONS

And although you know that at ROTOR we defend our star product, the oval chainring, we also want to offer you alternatives if you continue to use standard (round) chainrings.

The ROTOR chainrings with 0% ovalization made of 7075-T6 CNC aluminum are available in direct mount from 26 to 40 for MTB, compatible with ROTOR RHAWK and RRAPTOR cranks. In the same way you have them available for road and gravel from 38 to 54 and compatible with 2INpower DM Road, 2INpower DM Road, ALDHU, VEGAST and VEGAST models. In addition, for all modalities, you have the same options available as our oval Chainrings, the DM spider with a 110×5 BCD, which allows you to adapt your chainrings with this BCD measure to the OCP Mount system by means of an extra spider.

Other options are a direct inheritance of oval chainrings to offer you, in the same BCD measurements as oval versions, for round chainrings. On the one hand, the NO QXI 76 BCD chainrings compatible with spiders for ROTOR, SRAM, Specialized and Cannondale F-SI Ai cranks. In 32, 34 and 38 teeth. On the other hand, you can opt for the Q Rings Spider Mount 110×4 MTB IX chainrings, perfect for mountain biking and compatible with all ROTOR, INSPIDER, KAPIC, KAPIC CARBON, RHAWK and RRAPTOR modular cranks. They are available in sizes of 34, 36 and 38 teeth, always using a 110×4 spider.

At ROTOR we always try to offer all possible options for any type of user, both using ROTOR crank systems and those of other manufacturers, so we encourage you to visit our website where you can find out in detail the rest of the mounting options for single chainrings. You can mount our single rings, in addition to mountain bike and gravel models where they have more presence, but also road, triathlon and time trial models. All products and info can be found on our website: www.rotorbike.com

Would you like to know more about the ROTOR chainrings?

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