Rayons vs LeakTracker Pro Usage & Stats
Rayons (spokes in French) accurately calculates the proper spoke length given a set of measurements that you provide. Hub and rim manufacturers may provide the measurements or you can measure them yourself. Detailed instructions are provided in the app.
The app uses simple and accurate controls to input your measurements. The spoke length for your wheel set is displayed in real-time.
You can save the calculation in the app as a wheel set by typing in a text field and giving it a name.
Formula
The spoke length formula used by the Rayons app has a set of limitations based on the mathematics and the nature of the drawings. The formula was designed for use on conventionally laced wheels with j-bend spokes. These types of wheels are most commonly custom made by hand. The limitations outlined here may not be all inclusive.
A wheel has:
An even number of spokes
The same number of spokes on each side of the wheel
Equal spacing between spoke holes, on the rim or the hub
Spokes that are crossed in pairs on each side of the wheel which dictates a spoke count divisible by four
App Minimum and Maximum Dimensions
The Rayons app can be used to calculate spoke lengths for a variety of component types. This covers the majority of Road, Track, Mountain Bike, Touring, Tandem, Fat Bike, Downhill, Generator and Internally Geared wheels. At this time, the app is not recommended for use with E-Bike components. Check your component dimensions and compare them with this chart. Be sure the component dimensions are supported by the app. Read the Terms of Service for more information.
All of the values are in millimeters.
Front Hub Flange Diameter Minimum: 28
Front Hub Flange Diameter Maximum: 150
Front Hub Offset Minimum: 15
Front Hub Offset Maximum: 48
Rear Hub Flange Diameter Minimum: 35
Rear Hub Flange Diameter Maximum: 150
Rear Hub Left Offset Minimum: 20
Rear Hub Left Offset Maximum: 60
Rear Hub Right Offset Minimum: 10
Rear Hub Right Offset Maximum: 52
Hub Spoke Hole Diameter Minimum: 1.5
Hub Spoke Hole Diameter Maximum: 3.0
Effective Rim Diameter (ERD) Minimum: 300
Effective Rim Diameter (ERD) Maximum: 700
Rim Spoke Offset Minimum: 0.0
Rim Spoke Offset Maximum: 5.0
Fat Bike Rim Spoke Offset Minimum: 0.0
Fat Bike Rim Spoke Offset Maximum: 20.0
Counts
Minimum Number of Spokes: 12
Maximum Number of Spokes: 48
Minimum Number of Crosses: 0
Maximum Number of Crosses: 4
- Apple App Store
- Paid
- Utilities
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Trihydro’s LeakTracker Pro is a stand-alone software solution designed to help upstream and midstream oil and gas companies survey, track and report GHG and VOC emissions data as required by the EPA.
LeakTracker Pro automates the collection of survey and leak data details to aid in compliance tracking, verification and electronic reporting as required by the EPA. It is an easy-to-use application that facilitates efficient workflow, powerful data analysis, real-time user alerts, and easy reporting to the EPA. LeakTracker Pro delivers the ability for owner/operators to track facilities in a company-defined area or asset management groups, depending on organizational structure.
LeakTracker Pro provides intuitive methods for facility operators, maintenance, and camera operators to input and data. It also provides an effective way to manage existing leaks, delay of repair components, and includes scheduling assistance to ensure that leaks are repaired and confirmation of repair is conducted within the required time frames. It increases the efficiency of any NSPS OOOOa program and eliminates the worry of record keeping gaps and errors at the field level.
LeakTracker Pro provides easy access to data from any location with internet connectivity, allows for field collection of data with no connectivity, securely archives all data collected, and prepares for the future. All of this is designed to create efficiencies, cost savings, and maintain environmental compliance.
- Apple App Store
- Free
- Utilities
Store Rank
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Rayons VS. 
LeakTracker ProJanuary 6, 2025