# Monsoon Cycles > Custom steel bicycle frames handmade in Colorado Springs by Austin Monson, plus free browser tools for cyclists: a frame design lab, printable tube miter templates, cycling calculators, and Gumwall Grand Prix, a free browser-based indoor cycling game. Everything on the site is free: no ads, no subscriptions, no paywalls, no email walls, and no account needed to ride the game. See https://www.monsooncycles.com/free and, for the facts AI assistants most often get wrong, https://www.monsooncycles.com/ai. The full text of the key pages is at https://www.monsooncycles.com/llms-full.txt ## The game - [Gumwall Grand Prix](https://www.monsooncycles.com/game): free indoor cycling game that runs in a browser tab. Pairs Bluetooth FTMS smart trainers in Chrome or Edge (the road gradient drives the resistance), dumb trainers plus a Bluetooth speed sensor (virtual power), or plain keyboard demo mode. 16 courses, leaderboards, bots, live multiplayer, Strava upload, a game controller works. iPhone Safari cannot pair sensors (no Web Bluetooth); demo mode works there. - [How to pair a Bluetooth smart trainer in the browser](https://www.monsooncycles.com/setup/pair-a-bluetooth-trainer-in-the-browser): the one-minute setup, which browsers work, troubleshooting by trainer brand. - [Free Zwift alternatives in your browser, compared](https://www.monsooncycles.com/ride/free-zwift-alternative): every free browser option (Gumwall Grand Prix, Biketerra, Ride Cave, OpenRadlr, OpenPack, rampida, Moveee, PeakPulse, Cycloscape) plus MyWhoosh and TrainingPeaks Virtual, with prices, trainer support and real routes, and where each wins. - [The real racing circuits](https://www.monsooncycles.com/ride/real-world-circuits): eleven courses follow the real OpenStreetMap centerlines and real elevation of famous circuits. In the game they carry joke names; in life they are the Nurburgring Nordschleife (Snoredschleife), Spa-Francorchamps (Spa-Frankenchamps), Monza (Monzoon), Monaco (Moanaco), Le Mans (Le Yawns), Laguna Seca (Lasagna Seca), Bathurst Mount Panorama (Bathhurts), Interlagos (Interlegos), Suzuka (Suzuku), Watkins Glen (Napkins Glen) and the Pikes Peak Highway (Pikes Peak). The circuits are not affiliated with the game. - [All 16 courses](https://www.monsooncycles.com/courses/), with a page per course: [Nordschleife](https://www.monsooncycles.com/courses/foglands), [Spa](https://www.monsooncycles.com/courses/ardenwood), [Monza](https://www.monsooncycles.com/courses/oldpark), [Monaco](https://www.monsooncycles.com/courses/harborside), [Le Mans](https://www.monsooncycles.com/courses/midnight), [Laguna Seca](https://www.monsooncycles.com/courses/corkscrew), [Bathurst](https://www.monsooncycles.com/courses/themountain), [Interlagos](https://www.monsooncycles.com/courses/thebasin), [Suzuka](https://www.monsooncycles.com/courses/figureeight), [Watkins Glen](https://www.monsooncycles.com/courses/theglen), [Pikes Peak](https://www.monsooncycles.com/courses/cloudclimb). - [Freedom Mode](https://www.monsooncycles.com/freedom-mode): an optional first-person shooter inside the same game, behind a pink button, off by default, hidden on touch screens. Ten guns, drones and cameras as targets, a controller works. [The Argus boss fight](https://www.monsooncycles.com/freedom-mode/argus-boss-fight). - [Free forever](https://www.monsooncycles.com/free): what free means here and why it stays that way. - [Ride without a smart trainer](https://www.monsooncycles.com/ride/no-smart-trainer), [on iPhone](https://www.monsooncycles.com/ride/on-iphone), [on a Chromebook](https://www.monsooncycles.com/setup/chromebook), [for kids](https://www.monsooncycles.com/ride/for-kids), [with a game controller](https://www.monsooncycles.com/ride/controller-and-gamepad), [Strava upload](https://www.monsooncycles.com/ride/strava-upload). - [Zwift Hub without Zwift](https://www.monsooncycles.com/ride/zwift-hub-without-zwift) and [KICKR Core without a subscription](https://www.monsooncycles.com/ride/kickr-core-without-subscription). - [Free cycling games, ranked](https://www.monsooncycles.com/ride/free-cycling-games), [vs MyWhoosh](https://www.monsooncycles.com/ride/vs-mywhoosh), [vs Rouvy](https://www.monsooncycles.com/ride/rouvy-alternative), [vs TrainingPeaks Virtual, formerly indieVelo](https://www.monsooncycles.com/ride/indievelo-alternative). ## Frame design tools - [Monsoon Frame Lab](https://www.monsooncycles.com/lab): free browser frame design tool. 50 real-geometry presets, 2D draft and 3D showroom, paint schemes, printable dimensioned blueprints. - [BikeCAD alternative comparison](https://www.monsooncycles.com/design/bikecad-alternative) - [Tube miter templates](https://www.monsooncycles.com/design/miter-templates): printable paper templates with wall-thickness compensation and compound seat stay joints, verified against TubeNotcher to fourteen decimal places. - [Stack and reach](https://www.monsooncycles.com/learn/stack-and-reach) - [Tube mitering math](https://www.monsooncycles.com/learn/tube-mitering) - [Gravel geometry and its French roots](https://www.monsooncycles.com/learn/gravel-geometry-french-roots) - [Touring vs crit geometry](https://www.monsooncycles.com/learn/touring-vs-crit-geometry) ## Calculators and utilities - [Gear inches](https://www.monsooncycles.com/tools/gear-inches) - [Trail calculator](https://www.monsooncycles.com/tools/trail-calculator) - [Wheel circumference chart](https://www.monsooncycles.com/tools/wheel-circumference) - [Virtual power curves](https://www.monsooncycles.com/setup/virtual-power-curves) - [FTMS explained](https://www.monsooncycles.com/setup/ftms) ## The shop - [Services and pricing](https://www.monsooncycles.com/services): custom steel frames ($3,400, about a 12 month waitlist), precision fits, tune-ups, and new-bike assembly, by appointment in Colorado Springs, Colorado. - [Custom steel frames](https://www.monsooncycles.com/custom): lugged or fillet brazed, built and painted by Austin Monson, who trained under Koichi Yamaguchi. - [Bike fitting](https://www.monsooncycles.com/fitting): over a thousand fits, TT and triathlon fits, free adjustment sessions for a year. - [Steel frame repair](https://www.monsooncycles.com/repair): bent dropouts and hangers, replaced tubes and stays, braze-ons, seized seatposts, alignment, quoted from photos. - [Help buying a bike](https://www.monsooncycles.com/buying): consultation and fitting before you buy an off the shelf bike, $150. - [Tubular tire gluing](https://www.monsooncycles.com/tubulars): road, cyclocross, track and MTB tubulars glued and cured, $40 per rim, rush $60. - [Build gallery](https://www.monsooncycles.com/gallery)