Toolbox
Crawl Ratio
Link Force
Sagitta
Spring Rate
COG
Tire Size
Fastener Shear
Transmission Ratio
Ratio 1
Ratio 2
Ratio 3
Differential Ratio
Portal Ratio
Input Torque (ft-lbs)
Tire Diameter (in)
Update
crawl_ratio = trans × R1 × R2 × R3 × diff × portal output_torque = input_torque × crawl_ratio tire_force = output_torque × 24 / diameter
Radius
Chord
Update
sagitta = radius − √(radius² − (chord/2)²)
Radius (Link Length)
Chord (Travel Window)
Sagitta
Spring Angle
Update
series_rate = 1 / Σ(1/kᵢ) axial_force = 1000 / cos(θ) effective_vertical = series_rate × cos²(θ)
Spring 1
Spring 2
Spring Axis
Track Width
Wheelbase
Left Rear
Right Rear
Left Front
Right Front
Update
cog_x = track × (rr + rf) / total cog_y = wheelbase × (lf + rf) / total
Tires
COG
Width (mm)
Aspect
Rim Diameter
Update
sidewall = (width_mm × aspect/100) / 25.4 diameter = 2 × (rim/2 + sidewall)
Bolt Diameter (in)
Tensile Strength (psi)
Update
shear = tensile / √3 (Von Mises) area = π × (diameter / 2)² single_shear = shear_strength × area double_shear = 2 × single_shear
Theta
Force (Lateral)
Update
isolated = force / sin(θ) shared = isolated / 4
0° — Frame reference
Axle
Link