Ride Forces

A new app that tracks g forces on rides and coasters.
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Ride Forces

Postby sdettling » Wed Apr 24, 2019 11:27 am

Hi all. I wanted to share an app I’ve been working on for the past year or so with Coastin Eric that I hope coaster enthusiasts like ourselves might find interesting.

For several years I’ve found myself wanting more when it comes to thrill ride statistics. Sure we’ve got standard ones like height, length, speed, and if we’re lucky max g force. As a lover of airtime I wanted to know more than just the max g force.

I remembered playing games like RollerCoaster Tycoon seeing stats like max negative g’s, total airtime, and a graph of the forces throughout the whole ride. I wanted these stats for real rides. I did some searching and found only a handful of graphs like this for coasters on the internet so I set out to try recording them myself.

I ended up building an app for iPhone and Apple Watch called Ride Forces which you can download here if you’d like to try it for yourself. The main goal of the app currently is to capture vertical g forces. I’ll spare you the technical details, but here are a few examples of rides I recorded with the app that revealed interesting results.


El Toro was a big inspiration for this app, I always wanted to know just how strong the negative g forces were on those ejector airtime hills. This ride in the last car produced forces of -1.3 g
eltoro.jpg



Ever wonder just how forceful a pretzel loop is? Manta at SeaWorld Orlando pulls 3.6 g in the pretzel loop (pictured here as negative g force since face down is considered the positive direction). The human body actually tolerates high g forces best in this position.
manta.jpg



Non coaster rides can also be recorded. Here's a Giant Discovery, which creates a cool looking pattern, and more airtime than Steel Vengeance!
wonderwoman.jpg


So to recap, here are some reasons you might want to use the app for yourself:
  • Allows you to relive your favorite rides
  • Helps you rate rides based on real data, rather than trying to recall the experience from memory
  • Share your experience on social media in a unique way
  • You can compare how the dynamics of a ride are affected by various factors such as:
    • Where you sit on the ride
    • How the ride changes over time (trim adjustments, retracking, wear and tear...)
    • Effects of weather and temperature

Happy to receive any feedback or questions you have about the app. It’s a bit simple for now but I hope to add more features over time.

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Re: Ride Forces

Postby PKI Jizzman » Wed Apr 24, 2019 11:38 am

This is incredible! Can't wait to see the results people share across the globe.
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Re: Ride Forces

Postby SharkTums » Wed Apr 24, 2019 11:52 am

Very cool! I went ahead and downloaded it.

Excited to try it out on some weird rides.

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Re: Ride Forces

Postby boldikus » Wed Apr 24, 2019 11:56 am

I love how you can see the Rolling Thunder hill on the El Toro graph.

This is rad.

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Re: Ride Forces

Postby Jaykethekid » Wed Apr 24, 2019 12:04 pm

This is an absolutely awesome idea! I cant wait to try it out.

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Re: Ride Forces

Postby RollerManic » Wed Apr 24, 2019 12:14 pm

Please, somebody get I-305’s info!

Downloaded. This app is very impressive. Well done!

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Re: Ride Forces

Postby coasterbill » Wed Apr 24, 2019 12:24 pm

At first I wondered how you got that El Toro data in the past year or so and was going to suggest that you keep it on the down-low but then I remembered that Apple Watch was a thing. :lol:

Anyway, cool app!

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Re: Ride Forces

Postby sdettling » Wed Apr 24, 2019 12:32 pm

coasterbill wrote:At first I wondered how you got that El Toro data in the past year or so and was going to suggest that you keep it on the down-low but then I remembered that Apple Watch was a thing. :lol:

Anyway, cool app!


Ha yes, that was definitely a consideration when deciding to build the app for Apple Watch. I encourage everyone to follow the rules!

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Re: Ride Forces

Postby Canobie Coaster » Wed Apr 24, 2019 12:35 pm

This app looks awesome! Unfortunately I don't have an iPhone, but it's really cool seeing these plots.
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Re: Ride Forces

Postby joelwee » Wed Apr 24, 2019 1:29 pm

What a great idea! I'm going to try it out this weekend at Knott's.
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