Scale vehicle differential

I designed a 3.5:1 rear differential and integrated its SolidWorks model into a team 1:10 vehicle assembly.

3.5:1 final drive design

15.95° pinion; 74.05° ring pitch angles

Integrated into team CAD assembly

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Project brief

ProblemCreate the rear differential within a team vehicle design.

ConstraintFit the bevel gear geometry into the shared platform.

My responsibilityI calculated the ratio and pitch angles and modeled the differential.

Project scopeTeammates designed the suspension and steering.

I derived the 3.5:1 ratio and pitch angles for pinion and ring gear.

I modeled the rear differential in SolidWorks and incorporated it into the team vehicle assembly.

The overall CAD assembly includes teammate-designed SLA front suspension, Hotchkiss rear suspension, and Ackerman rack-and-pinion steering.

This coursework ended at design calculations and CAD integration. Building and driving the vehicle would be a separate stage.

Differential geometry

The differential gear ratio is 3.5:1. Calculated pitch angles are 15.95° for the pinion and 74.05° for the ring gear.

Team CAD interfaces

I integrated the differential into the SolidWorks assembly with the team’s suspension and steering designs.

Project values and components