1. KAR Quick Shift for FSAE Vehicle EML 4551
Kai Vecchio
Andrew Sauer
Robert Esperon

2. FSAE Paddle Shift System
Problem Statement
Motivation / Objectives
Design Intent
Initial Cost Analysis

3. Problem Statement
Traditional Shift Method slow and inefficient in fast paced enviornment.
- Design a quick shift system that allows driver to maintain both hands on the steering wheel.

4. Motivation Increased driver concentration and safety.
Better control of the vehicle and faster reaction times.
First for FIU FSAE, and hope to set the standard.

5. Motivation

6. Objectives
Match the reliability of standard shift lever and clutch pedal set up.
Match the weight of previous shifter set up.
Shift time under 1 second
Cost under $1,000
Quick, and clean shifts.

7. Design - Paddles

8. Design - Paddles Shows the distance allowable for the paddles
Prototype uses a conductive cord or could be modified to use a wire fed design

9. Design - Paddles
Displays an in depth look at a new design using a snap action lever switch
Modified positioning of the paddles and modified the bracket

10. Design - Paddles Latest design with a push button switch
Renovated paddle and lever bracket
Difficulty surrounding positioning of the system

11. Design – Gear Shift
Pneumatic cylinders to drive gear shift
Double acting cylinder
20lbf required in push or pull direction
Choice of Bimba because “Bimba Manufacturing Company is an ISO 9001: 2008 certified company.”
¾ cylinder allows more flexibility for pressure loss, design error, etc (Cost difference minimal)
Bimba 9/16
Bimba 3/4
Working Pressures(PSI)
Thrust
Pull
lbf 40 60 80
100
120
140

12. Design – Gear Shift
Cylinder mounted to reduce risk of piston rod buckling
TBD – Clutch Actuation – linked to pneumatic assembly or separate electric actuator

13. Design – Pneumatic Assembly
Solenoids used to control flow
Normally closed – 12v rated
Flow through Polyurethane Clear Tubing
(Min.) Durometer 80A – Rated PSI – 220 (F)
ASTM D (2010)
Standard Test Method for Rubber Property—Durometer Hardness
TBD – Flow Regulator, Fluid Reservoir (9, 12, 20 oz tanks)

14. Design – Closed Circuit
12v supply from vehicle
Microcontroller to send signal to solenoid after receiving signal from driver (Arduino, PIC, TI)
Transistor between microcontroller and solenoids

15. Initial Cost Analysis Part Cost (usd $) Qauntitiy Total (usd $)
Pnuematic Cylinder 30 1
Rubber Tubing (Bundle) 20
Solenoid 2 60
Regulator
Tank
Microcontroller
162

16. Conclusion Problem Statement Motivation / Objectives Design Intent
Initial Cost Analysis

17. Gantt Chart Table 1: Gantt Chart for KAR Quick Shift System Feb Mar
Feb
Mar
Apr
May
Jun
July
Aug
Sept
Oct
Nov
Dec
Team Selection
Project Selection
Literature Survey
Conceptual Design
Development
Begin Design Development
Analysis of Design
Prototype Construction
Testing and Evaluation
Conclusion