Tobias Overdiek - Previous Design Projects

1. Jan 2016
Tobias Overdiek
B.S. Mechanical Engineering

3. 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, development
and research for all other systems including cooling, batteries, controls, safety,
and electrical systems.
2.) Design work completed for the UTA FSAE team 2009-2012
3.) Personal automotive background
4.) Management & Inventory systems design during Motorsport Team
employment
5.) Brief FEA introduction during employment at Twister Trailers
6.) Additional hobbies
Best Regards,
Tobias (+49) 06172 / 3806111
TobiOverdiek@gmail.com

4. 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.

5. 1.

6. UTA Formula Hybrid – Chief Engineer
The 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.

8. 1.
Power Output: ~13KW at 144VRR 7700 RPMMax 4.75:1 Reduction Weight: ~ 28lbs Top Speed: ~120mph

9. - * The final motor selection was changed due
to schedule and availability. The planetary in hub transmission remained unchanged.
1.

10. 1.

11. Rapid prototype intake with resonance
reduction and bell mouth intake runners
2.

12. Partitioned rapid prototype intake with matched restrictor
Tuned equal length exhaust header
2.

13. - Community college level automotive courses completed prior to B.S. including
automotive 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, doubling
Moms’ old cars’ hp using a 20V JDM 4AG engine.
3.

14. Occupation during 2011-2014 for Murillo Racing
IMSA (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.

15. Complete 3D Models & Photo Renderings and experimenting with weld joint Modelling
techniques for large scale Trailers/ Simulations Basic Frame FEA analysis
5.

16. Gooseneck Trailer – FEA analysis of
steel nose sub frame hucked to welded
aluminum nose structure
5.

17. Audio Mixers, Midi/Synthesizers, Software Interface Controllers
Building things with lots of Bass, using calculated design and validation
6.