◀ home

Bike Design Tools

Free browser tools from Creature Cycles: parametric frame geometry, flex-stay suspension kinematics, and a J-bend spoke length calculator. No install.

△
ready
Frame Designer
Parametric bicycle frame geometry tool. Adjust angles, lengths and stack/reach. Visualise your frame in real time.
Open tool
◎
ready
Spoke Length Calculator
Calculate J-bend spoke lengths for any wheel build. Supports 1×, 2× and 3× lacing with rim and hub presets.
Open tool
∿
ready
Suspension Designer
Four-bar suspension kinematics solver. Currently covers flex-stay full-suspension frames — drag pivots to see leverage ratio, anti-squat/rise and stay bending stress, validated against Linkage X3. More linkage types planned.
Open tool