A Brief Introduction

Resume Projects

Mar 2016Tobias Overdiek

B.S. Mechanical Engineering

Hello, My name is Tobias Overdiek and this presentation is meant to be a brief introduction, to perhaps gain your interest by displaying some of my talents. I’d gladly discuss more details or answer any questions by phone, email, or in person. Thank you for your time and interest in advance.

Contents Overview: 1.) Design work completed while chief engineer for the 2011 UTA Formula Hybrid

student built race car, winner of the GM “Best in Design” award during competition, responsible for designing BLDC in wheel electric motors coupled with planetary transmission gear boxes, as well as ground work, initial development, and research for all other systems including cooling, batteries, controls, safety, and electrical systems.

2.) Engine Development & Intake design work for the UTA FSAE team 2009-2013 3.) Personal automotive background 4.) Management & Inventory system design during Motorsport Team employment 5.) Brief introduction & FEA work during employment at Twister Trailers 6.) Additional hobbies

Best Regards, Tobias (+49) 06172 / 3806111

TobiOverdiek@gmail.com

2011 UTA - Formula Hybrid Concepts

1.1.

1. UTA Formula Hybrid – Chief Engineer

At the beginning of 2010, UTA Racing had suffered another failed attempt of starting an alternative hybrid electric vehicle team by a group of capstone design students. When I asked my professor whether there still was a hybrid team, he promptly just asked: ”Would you like to be team captain?!” Enticed, the next day he had my yes.

The regular Formula SAE crowd wanted nothing to do with this new Hybrid vehicle. No one on the team had ever built an electric car before and finding others interested to join the challenge rather than working on the regular FSAE car seemed like a lost cause. More so, “hybrid” was dubbed to be a low performance heavy-slug mobile when compared to the high performance winged FSAE cars. Nevertheless, I was up for the challenge, even if it meant that I had to start of alone and learn everything I needed to know along the way.

Although this hybrid was destined to way at least 150lbs more than our highly toned 450lbs 600cc powered FSAE racecars, the promise to regain the performance weight penalty through fully programmable AWD, Torque vectoring, and electric acceleration aid, made it a challenge I couldn’t resist.

2011 UTA - Formula Hybrid Concepts

1.2.

1.3.

1. UTA Formula Hybrid – Chief EngineerThe next 18 months of my life were spent on developing motors, gearboxes, electrical systems, control logic, batteries, the list never ended, to retrofit a previous FSAE car into a hybrid electric vehicle.

The wheel motors alone went through 25+ complete iteration stages, starting of with 5 hp direct drive 70lbs monster-weight motors, to ending up with an 18hp planetary geared 28lb in wheel package, which at the time of competition was unheard of for student design. However, the designed motors were never ordered. The team had decided in an attempt to meet a deadline to change the motors, regardless of my recommendations and insights not to. The results was a much lower performance package, which nevertheless still outdrove and overlapped the next best car at the competition at a 2:3 lap ratio.

Here are a few of the early motor/gear box iterations. Some were more complete than others, all use specked parts, bearings, seals, etc, with the intent of full assembly/manufacturability.

1.4.

Final Wheel Motor Design

Power Output: ~13KW at 144VRR 7700 RPMMax 4.75:1 Reduction Weight: ~ 28lbs Top Speed: ~120mph

1.5.

- * The final motor selection was changed dueto schedule and availability. The planetary in hub transmission remained unchanged.

Final Wheel Motor - Built

1.6.

H11 UTA Formula Hybrid1.7.

Formula SAE – Engine Development

2.1.

2. UTA Formula SAE – Engine Development Lead Engineer 2008-2009Responsible for Development & Design of: • ’09 Car - Intake, Exhaust, Restrictor, and Engine package - Rapid prototype 3D printed intake development - Improving restrictor design through 17+ iterations - personally awarded “Best use of StarCCM+” CFD award in 2009 for use of flow simulations of intake & restrictor 3D models - Finished 7th during the 2009 FSAE West engineering competition - Car recently won the 2015 National SCCA Champion title

Senior Design 2012-2013• CBR250 Turbo Prototype Engine package – Intake & Turbo Manifolds 2.0• Development and construction of Engine Dyno

Alumni Team mentor since 2011

FSAE – ’09 Engine Package

2.2.

FSAE – ’09 Engine Package • Carbon fiber wings, diffuser, and Wheels

• 600cc Honda F4-I 85-90 hp (restricted)• PerTec ECU

• 220 kg • 2.2 G’s of controlled lateral grip at 80 mph

2.2.

FSAE – ’09 Engine Package Partitioned rapid prototype intake with matched restrictor

Tuned equal length exhaust header

2.3.

FSAE – ’09 Engine Package

• Equal Volume Partitioned Intake • 10 kpa pressure drop improvement over previous UTA intake manifold

2.4.

Rapid prototype intake with resonance reduction and bell mouth intake runners

FSAE -Turbo Kit for CBR250

Senior Design2.5.

FSAE -Turbo Kit for CBR250

Senior Design2.6.

FSAE –Homebuilt Engine Dyno

Even though this engine dynometer was designed and built by mostly me and two of my team-mates, I never personally had the chance to use it. The design used 1 of 2 water breaks from an old in ground chassis dyno.

Senior Design

2.7.

Automotive Background- Community college level automotive courses completed prior to B.S. includingautomotive technology, suspension, engine performance and diagnostics I+II.- Engine tuning, dyno work, and data acquisition systems (Motec)- 10y+ hands on experience with repairs including engine swaps, fabrication of custom engine and transmission mounts, rebuilding manual transmissions,forced induction systems, wiring, and stand-alone engine management.

Rebuilding an SW20 MR-2 tranny

(2004) Custom engine mounts and axle build,with a nice OEM clean finish install, doublingMoms’ old cars’ hp using a 20V JDM 4AG engine.

3.

Professional MotorsportsOccupation during 2011-2015 for Murillo RacingIMSA (GRAND-AM) Continental Tire Sports Car Challenge- Designed and managed Inventory and organizational systems which increased operational work flow enough to down size from 12 crew members to 7-8 while gaining efficiency, winning the 2014 CTSCC Championship- In charge of technical logistics and personnel management- Measurements and data acquisition systems- Troubleshooting and engineering resource “Smart” spreadsheet - tracking tire inventory,

wheels, logging mileage, plus corner specific usage

4.1.

Tracks Worked at May 2011- Jan 2015Including best CTSCC ST finishes at each: 1st Daytona International Speedway1st Virginia International Raceway2nd Circuit of the Americas2nd Indianapolis Motor Speedway2nd Road America3rd Sebring International Raceway4th Lime Rock4th Mid Ohio Sports Car Course5th New Jersey Motorsports Park6th Road Atlanta 7th Barber Motorsports Park7th Mazda Raceway Laguna Seca10th Watkins Glen International11th Homestead-Miami Speedway

Professional Motorsports4.2.

Complete 3D Models & Photo Renderings and experimenting with weld joint Modelling techniques for large scale Trailers/ Simulations

ALU-Chassis Design & FEA

Basic Frame FEA analysis

Custom 12 Horse Luxury Trailer

5.1.

Chassis & Tool Design5.2.

-Hobbies - Audio Mixers, Midi/Synthesizers, Software Interface ControllersBuilding things with lots of Bass, using calculated design and validation

6.

Thank You for your time and interest

Tobias Overdiek(+49) 06172 / 3806111

TobiOverdiek@gmail.com