Aerial Amusement Ride Expert Witness 435-272-2389 ZIPLINEDOCTORS "Zipline Safety is No Accident!"
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Mr. Richardson is the CEO of Momentum Engineering, LLC. Since 2000, his companies have stayed involved in zip line design, inspection, zip line trolley safety, product development, and Emergency Arrest Devices (EAD) since 2000. He started building roller coaster systems in 1988.

Mr. Richardson's first company AA Machining & Welding, Inc., began in 1995. The company was a licensed steel erection contractor and had National Board-Certified welders. He started building zip lines for a Park City, Utah ski resort who asked him to design a passive braking zip line trolley for the 2002 Winter Olympics. He built the safest, most extensive zip line system in the world in 2002. He later gained his first United States zipline trolley patent issued in 2003. AA Machining & Welding, Inc. built the zip line towers, passive braking trolleys, developed and designed the first spring system as an Emergency Arrest Device (EAD) for the emergency brake system. In 2016, after forming a new company, Momentum Engineering, LLC, he developed another new trolley. The first hand-held passive braking trolley and a new spring system the patent issued in 2019. The hand-held trolley addressed braking failures in the zipline industry. The hand-held trolley’s compact design with his new barrel spring braking systems are the most reliable emergency brake system in the zip line industry.

The passive braking trolleys are adaptable for different slopes and changes in wind and temperature.. In January 2017, Headrush Technologies White Paper stated spring systems were the most reliable EAD/emergency brake. His trolley and brake system is the safest hand-held trolley today.


In 2009 he designed, build, trained personnel, and operated a zip line in Spanish Fork, Utah. 


He has three United States patents for the passive braking trolleys and zip line braking systems. The first issued patent in 2003. The second United States patent issued in 2013  and his third United States patent was issued in 2019. 


Mr. Richardson’s zip line braking technology is utilized in many of the most extensive zip lines in the world.
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Yes We Built the Park City Mountain Resort Zip Ride in 2003 Park City Mountain Resort sent their Employee Erik Cylvic to Cedar to work with the "Zip Doctor"

Contact Information:

(435) 272-2389
troy@ziplinedoctors.com
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