CYC EBIKE & EMTB CONVERSION KIT CHAINRING OPTIONS

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CYC Motor offers 3 different chainring options for the X1 PRO and 2 options for the X1 Stealth ebike and emtb mid drive conversion kits. These options are the 11/53T, the 11/63T, and the 12/72T. Now the big question comes in... which one is right for you?

When choosing your chainring option, keep your desired ground clearance in mind as the primary consideration. We also recommend that you choose a chainring option that is close to your current bike’s set-up at the cassette provided that you are happy with the ground clearance your bike currently has. So, if you currently have an 32T chainring before converting it to an e-bike, we recommend going for the 11/53T option with a 32T inner chainring. The same goes for an 42T chainring - the 12/72T option with 42T inner chainring will suit nicely.

 

This is, of course, just our recommendation, but you are free to choose whatever option you see fit for your desired goals as you will see the technical differences explained below. 

53T chainring top view.jpg

11/53T

Compatibility:
X1 PRO & X1 Stealth

Inner bike chainring:

32T

Diameter:

136mm

Chainguard:

Aluminum

63T chainring top view.jpg

11/63T

Compatibility:
X1 PRO & X1 Stealth

Inner bike chainring:

38T

Diameter:

160mm

Chainguard:

Aluminum

12/72T

Compatibility:
X1 PRO (excluding BB92)

Inner bike chainring:

42T

Diameter:

176mm

Chainguard:

Aluminum

THE CHAINRING OPTIONS AFFECT THE CADENCE

The misconception is that the chainring has a large impact on your ebike's top speed, when in fact, the chainring only has a real impact on the cadence and the ground clearance you want to achieve on your ride.

 

When you change to a larger chainring, let’s say from a 53T to a 72T, the cadence RPM will decrease, but at the same time, your gear ratio to the rear wheel will increase in overdrive, canceling each other out. Keep in mind that you will need to stay in the same gear on the rear cassette. The real difference in the X1 PRO chainring sizes is what gear ratio you want from human input power to the rear cassette, i.e. how hard are you willing to pedal in PAS mode.

 

A smaller chainring will have more torque, but you will have to maintain a higher cadence in the same gear to achieve the same speed. The same goes the other way around. If you have a larger chainring you will have less torque, but less cadence is required to drive at a higher speed. 

 

It is important to note that it is not always about the cadence rating but also the actual size of the chainring. For bikes that use BB92, the 72T chainring will clash with the chainstay of the bike. In which case, the rider will need to choose a smaller chainring. The second-largest option (11/63T with 38T inner chainring) will work just fine. The X1 Stealth conversion kit also does not offer the 12/72T option for the same reason - physical space available.

CYC Ebike top speeds at the crank

TOP SPEEDS AT THE CRANK

The top speed at the crank will vary with the chainring options you choose but as we mentioned, your overall top speed will stay the same. This graph shows the various outputs possible at the crank according to the chainring size.

If you are uncertain about which option to pick after reading this article, contact us at technical_support@cycmotor.com or refer back to the FAQ's page.
 

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