Velopedia
Bicycle Knowledge,
Specifications & Tools
Velopedia brings historical bicycle specifications, technical references, practical guides, original archive research, private records for bicycles you own, and workshop tools together for riders and mechanics. Fit and geometry tools connect rider measurements with real bicycle geometry preserved in the Velopedia Archive.
Documentation that supports resale
Help protect your bike’s value with a documented history.
A well-maintained bike and an undocumented bike can look nearly identical in a listing. Bring its identity, upgrades, service and supporting evidence together so buyers can see the care behind the bicycle and better understand the asking price.
- Complete core report is free
- Private until you share
- Clear source labels
Optional private maintenance mileage Compatible with Strava, free to connect, and kept inside My Garage. Use cumulative bicycle mileage to time maintenance without putting ride details, Strava names or mileage into buyer reports.
A report presents source-labeled records; it is not an appraisal, proof of ownership, an independent mechanical inspection or a guarantee of condition or sale price.
Explore
Explore Velopedia
Research a bicycle
Search 50,000+ archived models, browse reviewed brand references, compare bicycles, and follow long-term technology trends.
Understand and work on it
Use technical references, practical guides, bicycle-specific inspection guidance, and workshop calculators built around real service questions.
Document the bike you own
Create a private record for any physical bicycle—even without an Archive match—track its setup, upgrades, inspections and service history, then share a free documented report. An optional one-time Report Plus package adds a protected photo gallery and supporting files.
Fit & Geometry
Start with the rider. Understand the bike.
Bike Fit Calculator
Build rider and position references, calculate transferable contact-point coordinates, and place the entered frame in modern Archive context.
Start with the rider Geometry & ArchiveGeometry Calculator & Analyzer
Calculate chassis geometry, interpret handling and proportions, and compare the result against real bicycles in the Velopedia Archive.
Understand the bikeBuild, set up and service the bike.
Five more transparent calculators for common workshop questions.
SpokeMaster
Calculate independent left and right spoke lengths.
→ Bike SetupTire Pressure
Estimate independent front and rear starting pressures.
→ DrivetrainGear Ratio
Compare gearing, cadence speed, range, and cassette jumps.
→ SuspensionSuspension Setup
Build fork and shock sag targets and troubleshoot ride feel.
→ Drivetrain ServiceChain Length
Turn drivetrain geometry and suspension growth into a cut-ready plan.
→Latest Entries
Split Pivot Suspension
Summary Split Pivot is a four-bar rear suspension system developed by David Weagle and identified by a linkage pivot concentric […]
Maestro Suspension
Summary Maestro is Giant Bicycles’ dual-short-link rear suspension system. A rigid rear triangle is connected to the main frame by […]
Four-Bar Suspension
Summary Four-bar suspension is a family of bicycle suspension systems built around four rigid members connected in a closed loop […]
ISCG
Summary ISCG is the original International Standard Chain Guide interface introduced in 2003. It defines the position of three threaded […]
ISCG-05
Summary ISCG-05 is a standardized frame interface for mounting chain guides, bash guards, and related drivetrain-protection devices near a bicycle’s […]
Chain Guide
Summary A chain guide is a drivetrain component that limits chain movement around the chainring to reduce the chance of […]
Velopedia connects technical explanations, practical guides, historical model data, original archive research, workshop tools, and private records for documenting the bicycle you actually own.