Methodology & limitations
Understand what is calculated, what is entered, and what remains unknown.
Calculation rules
Measure rider limb lengths and the seat-relative handlebar and footpeg coordinates for the exact motorcycle and setup.
Choose a torso-lean assumption and solve the arm and leg triangles using the law of cosines. Mark physically unreachable endpoints explicitly.
Use the schematic to compare input scenarios, not to infer comfort, flat-footing, or safe control. Validate the real motorcycle in person.
Limits that matter
A two-dimensional diagram cannot guarantee comfort, footing, control reach, clearance, or safe operation. A real-world fit check is essential.
Examples, imports, and source evidence
Example records are illustrative and are not a current public database. CSV and JSON imports are processed locally. A source URL supplied by a user does not mean that the publisher or this tool has independently audited that record. Missing specifications remain unknown. Inspect source dates and revisions before acting.
Reproducible results
Export a JSON plan to preserve the inputs and method version. Table exports contain the complete result, not just the currently displayed page. The printable report includes all result rows. A saved plan stays on this browser until you delete it or clear browser storage. Calendar exports create a snapshot of dates, not continuously updated alerts.
Corrections and commercial independence
Report calculation issues through the linked public source repository using an anonymized reproducible example. Do not include private addresses, serial numbers, personnel records, financial statements, or license-restricted data in a public issue. Advertising cannot change calculations, compatibility warnings, organic order, or source interpretation.