RS400PRO

Four Wheel/Dual Laser Wheel Measurement System

Our most popular wheel measurement system for 10 years!  The RS400PRO is a four wheel, dual laser fully dynamic wheel measurement system.  With this system you can measure all four wheel locations both statically and dynamically.  No tape measures, framing squares, plumb bobs or string required.

How it Works:

1. Install the four wheel fixtures (Axle Alignment Fixture and Wheel T).  Front axle alignment fixtures thread onto the spindle.  Rear axle alignment fixtures mount to the hub drive flange, to the spindle or to the hub.  (Drive flange is the quickest, as the axle does not need to be removed.)  Wheel "T's" slide onto the axle alignment fixture and clamp down.  

2.   Install the two frame squares on the right (or left, your choice) side frame rail.  These fixtures are either magnetic or clamp-on.  

3. Install the laser stand on the chassis.  The laser stand clamps to the rear of the chassis, typically on the round tube fuel cell protection bar, a bumper bar or directly onto the rear clip behind the fuel cell.  Square and round tube mounts available.

4. Align the right side laser with the same marks on each frame square.  The laser adjusts with a thumb screw and moves inside the laser assembly.  Each laser projects a "laser wall" down the side of the car, creasting a line across each of the fixtures.  Next, place one of the 96" lay-out rulers on the floor in front of the rear tires, with the right side laser hitting the 1" mark.  Place the second lay-out ruler in front of the front tires. Now, adjust the left side laser to hit the same two marks on the lay-out rulers.

That's it.  Now you have two laser lines, parallel with each other and square with the chassis.  Walk around the car and instantly read toe and lateral wheel location on all four wheel fixtures.  Use a digital level and quickly measure camber.  Use a tape measure and quickly measure wheel base.  Turn the wheels and quicly measure Ackermann. Motion the chassis and quickly measure bump steer and rear steer.  Make an adjustment such as a trailing arm, panhard bar or tie rod sleeve and instantly see the result.

What it includes:

(4) Axle Alignment Fixtures, (4) Wheel Measurement Fixtures, (4) Collar Locks (2) Frame Squares, (1) RS-2 Dual Laser Stand Assembly with Chassis Attachment Kit, (2) Adjustable Laser Assemblies, (1) Caster Camber Gauge Adapter, (2) Billet Wall Mounts for Storing System Fixtures, (1) Instruction Manual, (1) Tool Set, (1) USB Drive with Real Square Set-Up Sheet and Calculator Program

Optional Accessories: Extended Right Side Frame Squares for Straight Rail Chassis, Center Line Laser, Left Side Frame Squares, Digital Toe Caliper

What it Measures:

Static* Measurements: Front Toe**, Front Camber***, Front Caster***, Ackermann, Rear End Housing Toe, Rear End Housing Camber***, Rear End Housing Squareness****, Lateral Rear End Location, Contact Patch Alignment, Wheel Base

Dynamic* Measurements: Front Bump Steer, Front Treadwidth Change, Front Camber, Front Caster, Ackermann, Rear Steer, Lateral Rear End Movement, Contct Patch Alignment

*Static = Car Sitting at Ride Height (In the shop/pits, etc.)  

*Dynamic = Car at Track Ride Height (Suspension Compressed or Extended as it is on the Track)

**Real Square Systems measure individual wheel toe, referenced back to the chasis, as wheel as total toe.

***Camber and Caster Requires Digital Level and/or Caster Camber Gauge.  CC Gauge Adapter is included with System.

****Rear End Housing Squareness is the position of the rear end, front to rear in relation to the chassis.  Also known as static rear steer.