Faculty Bios

ernieErnie Macias

Mr. Ernie Macias began his education in the United States Navy; first as an Aviation Ordnance man and then he became part of the United States Navy Seabees as an Equipment Operator. In 2004 he started at ACC in the Automotive program. After receiving his A.A.S. Degree in Automotive Technology, he moved on to earn his certifications in Small Engine Repair and Marine Engine Repair.

Ernie has been with ACC since 2008 as a full-time employee and as an adjunct instructor. He is very knowledgeable and wants the best for the Outdoor Powered Equipment Program. Making sure the students have the best learning experience possible is priority number one for Ernie.

With his military training and experience, Ernie can think outside the box and figure out different approaches to teaching and helping students learn to solve problems. He is a “Jack of all trades “. Mr. Macias is also an Iraq War Veteran and he understands and can relate to other veterans in a teaching and learning environment. With a “Can Do Attitude”, Ernie will get the job done.


ryanRyan Arnold

Mr. Ryan Arnold has been teaching Motorcycle and Automotive classes at Austin Community College’s Riverside Campus since 2010.  A former graduate of ACC’s automotive and motorcycle programs himself, he holds 10 Automotive Service Excellence (ASE) certifications, a motorcycle program certificate, and master level certification from Chrysler Auto Group.

Ryan brings a diverse set of experiences to his classroom.  Mr. Arnold has been in the automotive industry for over 15 years and has worked in levels from the parts counter to shop foreman.  He also has worked with a top Land Speed Racing Organization for 13 years where he has served as Race Director and also as Chief of Technical Inspection.  He has built and raced a custom racing motorcycle to over 200mph in the standing mile. He is knowledgeable in all types of motorcycles but has a more extensive background in Asian sport motorcycles.

Mr. Arnold believes in providing an environment in his classroom that fosters his students’ understanding of concepts which leads to real world problem solving abilities and independence as technicians.  His goal is not to just provide you with the answers but to teach you the theory on how different systems operate so you can approach any problem and successfully diagnose a variety of problems commonly seen at repair facilities today.


seanquinSean Quinn

Mr. Sean Quinn has always loved hot rods, fast boats and anything that could be made to go fast.  He moved soon after high-school from Virginia to Texas to attend UTI (Universal Technical Institute) and graduated in 1994 with a diploma in Automotive and Marine Technology.  After graduating UTI he worked in the automotive field from 1995 to 2002, and obtained his ASE certifications and became a certified Toyota technician.

Seeking a more adventurous career, Sean moved his family to Austin TX to begin working on boats.  Starting at South Austin Marine in 2003 he began acquiring his Marine certifications and his education in marine repair.  Sean has attended Mercury University, Indmar factory training, Skier’s Choice University, Formula boats factory training and became an inboard specialist at South Austin Marine.

Sean began substitute teaching in the ACC Marine program in 2010 and completed his certificate in Marine Engine Repair in 2011.  He started teaching on his own as Adjunct Professor in 2011 while keeping current by working in the field as a marine technician.  Sean is still a marine technician at Platinum Marine located at Emerald Point Marina on Lake Travis.  Starting in 2016, Sean helped enhance the ACC Marine program by holding classes at Platinum Marine.  Having classes on the lake provides students a way to learn in a true Marine environment and provides opportunity for aspiring Marine technicians.  Sean has assisted in placing many students into Marine shops and dealerships all over the Austin area.


Bret Wilk

Mr. Bret Wilk has been drawn towards motorcycles since childhood. At age five he began saving his money and at age 12 he finally had enough to buy his first dirt bike. His drive and determination persisted and soon after he received a XS650 basket case; all of which he put together, completely reworked and still rides. Bret also reworked and still rides his 1975 Harley Davidson Shovelhead and His 1993 Harley XL 1200.

Upon high school graduation Bret attended Motorcycle Mechanics Institute in Phoenix, AZ where he graduated with a 3.91gpa and was recognized with numerous accreditations and awards. Within days of graduating, he was hired at Central Texas Harley Davidson where he worked until 2008. Bret was then hired at Cowboy Harley Davidson. During this time he was sent to Milwaukee, WI several times for additional training and received many more certifications.

In 2012 Bret began his own shop called Top Dead Center Cycles. Here he is able to provide a full spectrum of services including complete custom bike builds. In the shop Bret has a Sonnen Hone, a lathe, a sand blasting machine, a tire machine and many other machines and specialty tools that allow him to keep everything in house and be able to perform all of his own machining.

In 2015 Bret obtained his motorcycle mechanics certificate through Austin Community College. In the spring of 2016 Bret began teaching classes through Austin Community College out of his shop allowing his students first-hand experience in a real world shop environment.

While his certifications and professional training are on Harley Davidson motorcycles, Bret’s expertise and extensive experience allows him to span manufacturers and work and instruct without limits. When Bret is not at his shop, he enjoys fishing, racing his iron head drag bike, watching football or just kicking back with his family and friends.


michaelMichael Hall

Mr. Michael Hall has been part of the Automotive and Outdoor Power Industry since the 1980’s and has been teaching at Austin Community College (ACC) since 2013. He graduated from Texas State Technical College in 1990 and became ASE Master Certified that same year. Michael has worked in both dealerships and independent shops and has repaired all types of vehicles and equipment in various industries including heavy duty construction equipment, heavy duty over the road semi-trucks, light duty trucks, cars, boats and motorcycles.

Michael has a wide range of experience that includes repair and design aspects of mechanical, electrical and electronic equipment. He has extensive specialty training and education in numerous aspects of mechanical, electrical and electronic systems. He has worked as part of many different teams over his career to create unique and custom solutions to a variety of problems. He also has lots of experience in operations and management of various types of facilities and shops.

Mr. Hall believes in putting the best interest of the student first and his focus is on providing the best education he can for the students. He takes a real-world approach to teaching students and focuses on the use of a consistent, logical process for diagnosing problems and properly completing repairs. Michael is also working to create partnerships between high schools, ACC and industry partners so that students can get real world experience as part of their education at ACC and ultimately become a successful part of the Automotive and Outdoor Power Industry.

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