Have you ever wondered what is the largest size chainring that will fit on your track bike?

We get asked this question a lot. The short answer is that the only way to tell is to test it out. Even two identical frames may allow for different sizes of chainrings due to the tolerance stack between components. 

Read more about optimising your chainline here

We developed this handy tool to do just that. Each tooth on the gauge represents a different size chainring from 49 to 70 teeth.

Note: This product is a digital download that you can then 3D print yourself.

How to measure:

  1. Bolt the gauge onto your crank.
  2. Rotate the crank to observe tooth clearances with the frames chain stay.
  3. Identify the optimum size chainring for your setup.
  4. Chainring or bottom bracket spacers may be used to offset the chainline to increase the chainring clearance.

Specifications:

  • 144 BCD
  • 49 to 70 teeth
  • Note: this is a sizing tool only, it is not designed to interface with a chain or be used to ride a bike

3D Printing Specifications:

  • STL 3D file 
  • 218mm x 111mm total size
  • Support material required for printing tooth overhangs
  • Recommended settings:
    • 0.4mm nozzle
    • 0.2mm layer height (or finer)

Chainring Clearance Gauge ©2021 by Velobike Innovation Limited is licensed under CC BY-ND 4.0 

Velobike Innovation Chainring Clearance Gauge

A 3D-printable STL file that helps determine maximum chainring size for bike frames. Customers said it's "really handy" and "saves you any guessing or expensive mistakes." Prints quickly (under 30 mins), though some needed to adjust for smaller print beds (180mm). Universally praised as sturdy and accurate, preventing costly purchases.

  • 5 stars: 17 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Andrii S.
3d printed components

This is a very useful tool, I printed one copy for myself and one for friends store, it would be cool to be able to download similar prototypes of other components for fitting before buying. By the way, I had to cut a part of the model a little to fit on the Bambulab a1 mini printer plate. It might make sense to add two models to the download to choose from

G
G.T.
works as expected

Just got this printed out super useful I was scared to buy anything above a 48t without it

R
Rögnvaldur K.
Fantastic product

Excellent and works exactly as it should. Very sturdy and well designed.

O
Oisin H.
Handy little tool

This is a really handy tool that prints pretty quickly and easily that saves you any guessing or expensive mistakes about what size of chainring you can fit on your bike.

C
Christopher B.
Almost there

U don’t own a printer so I’m waiting on a bud to print for me, after that I’ll let you know!!

P
Paul D.
Ultra pratique !

Cette jauge de plateau m'a permit de vérifier la taille maximum de plateau que mon cadre pouvait supporter. Ca m'a même permit de contredire le maximum communiqué par la marque.
Merci !

A
Antony O.
Ofcourse a chainring clerance gauge exists!

It was just thought, I'm sure someone has already thought about my problem. How big a chainring can my frame handle. I Googled in come uncertain terms and voilà, it's right there as the first result. Not clued into the 3D printing stuff... but my intrepid nephew was able to print one in no time. Great tool for Trackies, and mos def made by Trackies.

R
Ross B.
Easy print, did exactly as advertised

I actually had to adjust the print a little bit because my printing bed is 180mm x 180mm, but it does say the dimensions right there in the description so that’s my bad. I was still able to fit it onto the bed with all the sizes though and everything worked out. Print was under 30 mins - cheap, quick, and exactly what I needed

E
Emma J.
Chainring gauge

Awesome. So much fun to print and so handy to check chainrings will fit!!

T
Tayne A.
Performs as advertised

Was truly a perfect coincidence that my friend got a 3-D printer, while myself and a friend needed to check chainring clearance (before ordering from Velobike). Within 2 hrs the tool was put to use, confirmed clearance with no fuss. Truly appreciate that I didn't have to ship such a simple tool halfway across the world

Thank you for your comment! We are happy to hear that our Chainring Clearance Gauge was able to assist you and your friend with checking your chainring clearance without needing to ship the part around the world. Thank you for choosing our product and for your support!

M
Marc C.D.

Works as advertised. Printed in no time and takes the guesswork out.

E
Ethan F.
Love it

This is such a great tool without breaking the bank. Really easy to set up on my printer and without that much time have the gauge ready to go. I was always worried about my frames tolerance for different chainring sizes. Saves me time and money for my future purchase of a chainring.

S
Steven C.
Easy as

Download, print, check it couldn’t have been easier to see what chainring fitted my bike.

M
Muhammad S.
Really great innovation

Before this it's hard to know what's the limit of chainring on frame. Usually have to buy or borrow chainring to know can or cannot fit with the frame which cost a lot of time, but with this gauge, it save a lot of time and cost. You guys rock!

Q
Quinn F.
Saved me time from attempting to design it myself!

Totally worth it

O
Oleg B.
Great tool

It's very easy to print
Looks great, I glad to have this tool
Thank you!

A
Andrew
works great

I printed it easily on an Ender 3 sliced using Cura. Fits perfectly.
I put some paint on the top layer and sanded off the excess so the numbers and logo can be seen easier.
It saved me from buying a chainring that would have been too big.
Excellent tool.

h
han

What is the minimum clearance between the sprocket and the frame's chainstay? thank you.

Velobike

2mm is recommended

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