Frame Explorer
Compare road & gravel frame geometry, character and
verified specs · all numbers from manufacturer geometry charts and
independent lab tests (sources linked throughout)
CHARACTER PROFILE — FOUR INDEPENDENT AXES
Each axis draws on its own data source and expresses one
property: where the frame puts your body (Position), how it behaves
(Handling), what the structure weighs (Lightness), how fast the shape is
(Aero). Filled dot = measured · hollow dot + ~ = estimated ·
? = no data · dashed outline = at least one axis not fully measured.
How the axes are computed
Position (0 upright → 100 low & stretched): 100 −
stack-to-reach ratio normalised against the road spectrum 1.40–1.75.
Handling (0 calm → 100 quick): mean of inverted trail
(50–75), wheelbase (970–1100), chainstay (405–450)
and BB drop (60–85).
Lightness (0 heavy → 100 climbing-light): inverted frame
weight against 650–1100 g. Requires a verified weight.
Aero (0 round tubes → 100 fully optimised): inverted
wind-tunnel wattage against 200–230 W (Tour Magazin protocol,
45 km/h) where an independent measurement exists; otherwise a design
assessment, always flagged as estimated.
Normalisation ranges are fixed, so scores stay stable as frames are
added. An endurance bike shows up as the pattern low-Position +
low-Handling — not as its own axis.
SPECS — VERIFIED DATA, LAB TESTS AND MANUFACTURER CLAIMS
Tier 1 = objective, checkable specs · Lab data =
independent measurements (mainly Tour Magazin; “—” means
not found, not zero) · Carbon & claims = the manufacturer's own
statements, not comparable across brands · hover for notes,
↗ = source · Stiffness/weight* = Tour BB stiffness divided by
frame weight — the closest thing to a cross-brand carbon-quality
number.
MEASUREMENT COMPARISON
Bars show relative differences (not zero-based, so small
angle differences stay visible). Geometry comes from manufacturer charts;
trail is derived from head tube angle + fork rake + wheel radius (700c +
30 mm tyre); weights and tyre clearance come from the spec sheets above.