Photo by Elliot Ryan
In the spring and summer of 2020, a college student built a working roller coaster in his grandparent’s yard. The student, Elliot Ryan, returned from college in March 2020 when schools closed because of the coronavirus. He had originally planned to visit with his grandparents in Rhode Island during spring break. But there was no call back to school after that, so he stayed with them instead of returning to his native Colorado.
Since this story takes place in Rhode Island, let’s start with some important facts about this very, very, very small state:
- You can fit 221 Rhode Islands in the state of Texas. You can also fit about nineteen million six hundred thousand Rhode Islands into the surface area of the planet, Jupiter.
Rhode Island - Public Domain, https://commons.wikimedia.org/w/index.php?curid=539518
Jupiter - By ESA/Hubble, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=57888670
- The 49th state by size, Delaware, is twice as big as Rhode Island.
- The nickname for Rhode Island is “The Ocean State”. This nickname was selected, in part, to help compensate for size (I don’t know if this true, but it seems like it should be). Actually, Rhode Island’s official name is “Rhode Island and Providence Plantations”, which is the longest name of the 50 US states. So at least that is something big for Rhode Island.
It is not every day (or ever) that a college student decides to build a working, full scale roller coaster in the yard. What would be the motivation for that? Fortunately, I had the chance to speak with Elliot:
ENR: What got you first interested in roller coasters? Which was the first roller coaster that you rode on?
Elliot: The first roller coaster I road on was in Elitch Gardens in Denver. When I was eight years old, I decided I wanted to build my own wood coaster. Before last summer, the closest I came was building wood jumps for mountain biking.
Cyclone 2 at Elitch Gardens - Creative Commons - https://creativecommons.org/licenses/by-sa/3.0/
ENR: What got you thinking about building a roller coaster in your grandparent’s yard? How did you go about building it?
Elliot: My grandparents had an old play structure in the yard for the grandkids. My brother knew about my roller coaster obsession and helped to plant the seed to go build it. It was not a big lift for my grandparents. They were all in at the first suggestion.
Photo by Elliot Ryan
I did most of the layout and design through trial and error. I measured heights and sketched out roller coaster first drop. The design was by trial and error. I looked at designs of other roller coasters and worked out proportions. At one point I had laid out a turn in the tracks but went with a simpler design.
Photo by Elliot Ryan
For the hill at the end to stop the car, I designed it to be taller than the starting hill. But grade in the yard sloped down, which I didn’t count on. Fortunately, side friction was enough to slow the car at the end of the ride.
ENR: How did you decide on vertical wheels for rolling and lateral wheels to keep the car on the track?
Elliot: I thought about different approaches. Originally I wanted to put wheels on outside but it was easier to build the wheels on the inside of car along with a guide track. I saw that other roller coasters were built this way.
Elliot noted that the fulfillment of the project has led to his decision to major in Civil Engineering. His program at St. Michael’s College is coordinated with the University Vermont in Burlington, where he will be taking CE classes for his Bachelor of Science degree.
What is impressive about this project, in addition to the fact that it is just pure fun, is Elliot’s expression of the creative process of engineering at an almost fundamental level. Elliot had a limited academic background for this work, and no experience in engineering process and procedures. But he knew in an intuitive way how to go about conception of the roller coaster, how to design it and iterate the design, and how to build the job. He worked through trial and error. He was able to bounce back from errors along the way with better designs.
The roller coaster had several test runs at completion of construction. When it was time for the full inaugural run, Elliot’s grandfather, Dr. Fred Silverblatt, volunteered to be the first passenger. From the opening day videos, it looks like the maiden voyage was a success.
Elliot is thinking of expanding the coaster to add more hills and some turns. There may be right-of-way issues if the extended track makes it to the edge of the Silverblatt’s yard. Elliot’s upcoming university courses can provide some analytical background for upcoming designs. But during the summer, the initial version was designed and built without any number crunching. If there were any RFIs during construction, Elliot sent them to himself and responded accordingly.
If you think about it, who would not want to have a working wood framed roller coaster in the yard? But it is one thing to dream about it, and another to design and build it. The joy is not in just the finished project and the Dr. Silverblatt’s happy (and slightly concerned) expressions during inaugural ride, but in seeing the passion and diligence of a rising young engineer, and the fulfillment of his quest.
Photo by Elliot Ryan
