Rayons vs Absolute Humidity

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

Humidity Manager is the app that helps you manage indoor humidity in a smart way, providing personalized advice on the best time to ventilate your rooms. HOW IT WORKS The app compares indoor and outdoor absolute humidity to determine whether opening windows will reduce or increase indoor humidity. Simply enter temperature and relative humidity for indoor and outdoor environments, and the app automatically calculates absolute humidity and provides clear, detailed guidance. KEY FEATURES • Automatic Calculation: Uses the scientific Magnus formula to accurately calculate absolute humidity in grams per cubic meter. • Smart Advice: Personalized recommendations that clearly indicate when to ventilate, with urgency levels to highlight the importance of action. • Weather Integration: Automatically retrieves outdoor temperature and humidity based on your location using WeatherKit, or allows manual input. • Intuitive Interface: Modern, easy-to-use design with clear visualizations for immediate understanding. • Best Practices: Dedicated section with practical tips on optimal indoor humidity management, including ventilation duration and frequency, ideal relative humidity, and seasonal advice. WHY IT MATTERS Ideal indoor humidity should be between 40% and 60%. Excess humidity can promote mold growth and health issues, while air that is too dry may cause dry mucous membranes and respiratory discomfort. Ventilating at the right time is essential: opening windows when outdoor air is more humid than indoor air worsens the situation, while ventilating when outdoor air is drier improves indoor comfort. WHO CAN BENEFIT • People who care about indoor air quality • Those with respiratory issues or allergies • Families with children • People living in humid or condensation-prone areas • Anyone looking to prevent mold growth • Homeowners aiming to optimize energy efficiency TECHNICAL FEATURES • Calculations based on recognized scientific formulas • Support for manual input and automatic weather data • Intuitive visualizations with graphic bars • Haptic feedback for enhanced user experience • Free version with limited daily calculations • Premium version with unlimited calculations FREE & PREMIUM VERSIONS The free version allows 2 calculations per day, enough for daily home monitoring. The Premium version unlocks unlimited calculations, enabling frequent checks or monitoring multiple rooms without restrictions. GET STARTED TODAY Download Humidity Manager and start improving your indoor air quality. A simple yet powerful app designed to help you make informed ventilation decisions and maintain a healthy, comfortable home.