CalculatorsPedal Load Cell Rig Stiffness
Pedal Load Cell Rig Stiffness
A 90 kg load cell is a number on the pedal, not a number the uprights feel until you include how high the face sits. Force in newtons times that height is the moment the pedal deck has to hold.
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- 40-series aluminium profile
Match the second dimension to the moment instead of buying the thinnest extrusion that looks like a rig.
$80–$250
How the number is made
Force (N) = kilograms × 9.80665. Moment (Nm) = force × pedal-face height in metres. Under 80 Nm suggests a 40×40 profile, under 160 Nm a 40×80, under 250 Nm a 40×120, and above that a 40×160.
This treats the pedal face height as the lever arm about the rig base. A pedal with its own cell ratio can be higher or lower than the kilograms you type. It is not a finite-element check of a branded cockpit.
- Profile code. 40, 80, 120 or 160 — the second dimension of a 40-series profile.
Where the moment goes
The pedal deck and the front crossmember see this moment first. A thick upright does not help if the pedal plate is a single 20-series rail.
Related calculators
- Direct Drive Torque and Rig Strain
Pedal moment and wheel torque load different ends of the same cockpit.
- Aluminium Extrusion Cut List
Once the profile series is chosen, height sets the millimetres to order.
- Sim Seating Position
The seating layout is what puts the pedal face at the height you just typed.
Questions
Is 80 kg the load-cell rating or my foot?
Type the force you expect at the pedal face. A 90 kg cell that you only use at 60 kg should be entered as 60.
Why does height change the profile?
The same force higher off the base makes a larger moment. A low pedal on a thick deck is a different problem from a tall heel plate.
Does this include the wheelbase?
No. Wheel torque is a separate moment at the wheel deck. Add that check before you order uprights.