CAR

THE 2022 CWRU MOTORSPORTS COMPETITION VEHICLE

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THE CWRU MOTORSPORTS SR22

The 2022 CWRU Motorsports competition vehicle, the SR22, is the culmination of twelve months of continuous work by the team and has been developed to compete in the 2022 Baja SAE Collegiate Design Series competitions.  Work on the SR22 began in June 2021, immediately after the end of the last 2021 Baja SAE competition, and involved significant changes to CWRU Motorsports vehicle's suspension, drivetrain, and more.

The SR22 features several new and innovative design features, notably a completely redesigned front suspension geometry. The most significant change in design from the 2021 competition vehicle was the 4WD system and frame, which was fully re-designed to optimize the system in the first frame designed with 4WD in mind.  The drivetrain features an optimized gearbox and a re-tuned CVT that results in appreciably faster acceleration. Refinements were made to the braking system to improve performance and reliability, and a new shock damping setup was developed to improve stability over large obstacles.

The result of these improvements is the lightest, fastest, and most nimble 4WD car the team has made.  Hundreds of hours were dedicated by team members to this project, and several personal sacrifices were made to make this accomplishment possible.  Browse the gallery below to appreciate the effort that the team has put into this vehicle.

GALLERY

TECHNICAL SPECIFICATIONS

FRAME

Material:

4130N CrMo tubular structure with carbon-fiber composite tubes used for additional bracing in select locations

Joining Method:

Body Panels:

GTAW with ER70S-2 filler material at CNC-notched joints

Molded carbon-fiber and carbon-Kevlar composite body panels with aluminum firewall and front skid plate

FRONT SUSPENSION

Suspension System:

Double wishbone with carbon-fiber composite upper control arm, steel lower control arm, and CNC-machined aluminum upright and hub

Springs and Dampers:

Steering System:

FOX Float 3 adjustable air springs with custom-valved damping

Unassisted rack and pinion steering with carbon-fiber composite tie rods and steering wheel

Wheels:

DWT A5 aluminum wheels

REAR SUSPENSION

Suspension System:

Suspension integrated into drivetrain with upper "A" arm and axial load-bearing half-shaft connected to CNC-machined aluminum upright and hub

Springs and Dampers:

Wheels:

FOX Float 3 adjustable air springs with custom-valved damping

DWT A5 aluminum wheels

BRAKING SYSTEM

Braking System:

Unassisted hydraulic disc braking system with dedicated front/rear Tilton master cylinders operating dual outboard front brakes and single inboard rear brake

Calipers:

Pads and Rotors:

CNC-machined aluminum fixed dual-piston calipers

EBC brake pads and coated steel slotted rotors

POWER AND DRIVETRAIN

Engine:

Power Transmission:

Briggs and Stratton Model 19, in stock configuration as mandated by Baja SAE

Gaged Engineering CVT outputting power to final drive gearbox

Gearbox:

Final drive reduction gearset with spooled output to rear wheels cased in a CNC-machined aluminum shell

Axles:

Axle Joints:

Aluminum axles with CNC-machined aluminum end yokes

Dana Spicer universal joints

OVERALL DIMENSIONS

Weight:

Length:

285 pounds

Less than 80 inches

Width:

Height:

Less than 60 inches

52.75 inches at normal ride height