Rayons

Bike spoke length calculator

Education

Utilities

$4.99

Rating summary

Details about Rayons

Released
Updated
iOS Version
Age Rating
Size
Devices
Languages

December 15, 2020
October 6, 2024
16.2+
4+
3.38MB
iPhone, iPad
American English
French (France)

Developer of Rayons

Timothy P Miller

⭐️0 / 5

Rating↘︎

🙌0

Ratings

📼9 scs

Media↘︎

📦w/o updates

Updates frequency↘︎

🗣❌ unsupported

Your locale

🖼️Download

Icons↘︎

Versions
Price History
Description
FAQ

Version History of Rayons

1.5.2

December 31, 2022

Fixed crash when a configuration is deleted from Wheel Sets list. Update documentation.

1.5

June 30, 2022

The Wheel Sets screen now has a search bar to help find configurations. Text entered in the search bar will match any part of a configuration name. The list will be filtered based on the text entered. The search is case insensitive. Tap an entry in the filtered list to make a selection. A checkmark will appear on the row selected. This becomes the current configuration. Tapping the Cancel button will dismiss the keyboard and remove the filter. Navigating to another screen will also remove the filter.

1.4.1

March 21, 2022

Fix Wheel Sets problem where last item in list was not selectable.

1.4

January 12, 2022

Minor layout and color fixes.

1.3

December 19, 2021

Native support for the French language. Minor improvements.

1.2

March 24, 2021

Support for Fat Bike rims in Front/Rear Rims. Fat Bike rim offset range is 0-20 mm. Asymmetric control is hidden for Fat Bike rims. Rim offset range automatically changes from 0-5 mm to 0-20 mm as required. Rim offset is now shown as a dimension on Front/Rear Rims. Tap the rim offset dimension for the stepper control. Spoke Hole (diameter) is now shown on Front/Rear Hubs. Updates to technical documentation.

1.1

February 6, 2021

Wider ranges for hub flange diameters and hub flange offsets. Update technical documentation. Minor enhancements.

1.0.1

January 6, 2021

Minor updates and fixes.

1.0

December 3, 2020

Price History of Rayons

Description of Rayons

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

Show less