Data Observatory

Statistical patterns gathered from fitting records worldwide — body proportions, ethnic differences, size distribution and bike-model coverage.

Global Distribution

LowHigh Bubble size ∝ records

Patterns in the Data

Height distribution

Frame size distribution

Ethnic-group body-ratio ladder

Inseam-to-height ratio by ethnic group, low to high; the dashed line is the global baseline.

Frame spread at the same height

Bike Frame Library

Frame geometry collected from official sites — cm / ° units, newest first.｜ We also keep older model years of many brands in our big-data corpus — fitting results match and recommend those too. Questions? Email: friends@fittinglab.ai

MOULTON THE HALL SE Folding

Source：www.moultonbicycles.co.uk Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
One Size	52.5	37.7	—	45	25.4	—	—

MOULTON FLYTE Folding

Source：www.moultonbicycles.co.uk Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
One Size	49.6	39.9	—	45	23	—	—

MOULTON XTB Folding

Source：www.moultonbicycles.co.uk Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
One Size	52.5	—	—	45	25.4	—	—

MOULTON SST Folding

Source：www.moultonbicycles.co.uk Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
One Size	52.5	—	—	45	25.4	—	—

MOULTON Jubilee Folding

Source：www.moultonbicycles.co.uk Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
One Size	46.5	—	—	38	21.8	—	—

MOULTON TSR Folding

Source：www.moultonbicycles.co.uk Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
One Size	52.5	—	—	45	25.4	—	—

BROMPTON G Line Folding

Source：be.brompton.com Collected 2026-09-27

Size	Stack	Reach	Top tube	Seat tube	Head tube	Head angle	Seat angle
Small	—	47.7	—	—	—	—	—
Medium	—	48.3	—	—	—	—	—
Large	—	50.4	—	—	—	—	—

Open API · Coming Soon

We are packaging this data into a self-serve, read-only API for developers working on bike-model matching, body profiling and regional trend analysis.

GET /api/public/statsGlobal / per-region record counts and coverage
GET /api/public/distributionHeight, frame size and other distribution histograms
GET /api/public/ratiosEthnic-group body ratios and averages

Sample response

Apply for access: Andata