Skip to content
LW9.5 wheel force transducer

LW9.5 wheel force transducer LW series

Six-axis wheel force transducer for ATVs, utility and other lightweight vehicles, 35.6 kN radial and 17.8 kN lateral, in stainless steel, with amplifier and slip ring.

35.6 kN
Fx, Fz capacity
17.8 kN
Fy capacity
5.4 kN·m
Moment capacity
≤ 0.25 % FS
Non-linearity
  • OutputsFx Fy Fz · Mx My Mz
  • Also measuredX and Z acceleration (X, Y, Z on the LW50) · wheel speed and angle
  • Signal outputanalog · CAN · Ethernet · CAN FD and EtherCAT on the CT3

Wheel force transducer for ATVs and small vehicles, 35.6 kN

The LW9.5 measures all the wheel forces and moments on ATVs, utility and other lightweight vehicles: vertical, lateral and longitudinal forces, and camber, steer and torque moments. Its 4-arm strain gage bridges are rated 35.6 kN (8,000 lb) on Fx and Fz, 17.8 kN (4,000 lb) on Fy and 5.4 kN·m on all three moments, with non-linearity of 0.25 % of full scale or less. The stainless steel transducer is weatherproof and temperature compensated, operates from −40 to 125 °C and adapts to 10 in and larger wheels. A matching amplifier adds X and Z accelerations and digitizes the signals before the slip ring; angular resolution is 0.17°.

The hub adapter bolts to the transducer with thirty-two 1/4-20 screws and the rim adapter with twenty-four, torqued crosswise to 13 N·m; four more hold the amplifier, sealed by O-rings and matched to its transducer. The slip ring, with a 512-pulse encoder, stays on the amplifier; a magnetic restraint and rod hold its stator on non-steered wheels, a stator angle corrector on steered ones. The CT2 box, powered at 9 to 36 V DC, zeroes the transducer on a hoist or on the road, runs the shunt calibration and gives the loads in vehicle coordinates.

The Michigan Tech Blizzard Baja team fitted an LW9.5 to its off-road car on custom adapters. On a utility vehicle, it records the force falling to zero in flight and peaking at landing after a ramp.

Wheel force transducer with amplifier and slip ring assembly
Transducer, amplifier and slip ring. The slip ring and the telemetry package are swappable.

Specifications

LW9.5
Measured quantitiesFx · Fy · Fz · Mx · My · Mz
Force capacityFx 35.6 · Fy 17.8 · Fz 35.6 kN
Moment capacityMx 5 400 · My 5 400 · Mz 5 400 N·m
Non-linearity≤ 0.25 % FS
Hysteresis≤ 0.5 % FS
Crosstalk≤ 1 % FS (after correction)
Angle resolution0.17°
Axes6
Sensing principleStrain gage (4-arm bridges)
Accelerometer range55 g (X and Z)
OutputAnalog voltage · CAN · Ethernet
Signal transmissionSlip ring
MaterialStainless steel
Operating temperature−40 to 125 °C
Interface boxCT2
VehiclesATVs · Utility vehicles · Lightweight vehicles
Rim size10 in (and larger)
Shown: LW9.5. Download the files

Request a quote

Signal transmission

By wire: amplifier, slip ring and encoder on the wheel. Not on the LW-MC-3.5K and LW12.8-50-TEL.

Options
Accessories
Your request

Unusual bolt pattern, motorsport hub, agricultural wheel: we build it around your wheel.

Resources

A question on this product?

Vehicle, wheel size, expected loads. An application engineer answers.

More details to give? Use the full contact form.

Contact us

An application engineer replies within 24 hours on working days. Use the full contact form.