A prototype is a preliminary model of something. Projects that offer physical products need to show backers documentation of a working prototype. This gallery features photos, videos, and other visual documentation that will give backers a sense of what’s been accomplished so far and what’s left to do. Though the development process can vary for each project, these are the stages we typically see:
Proof of Concept
Explorations that test ideas and functionality.
Demonstrates the functionality of the final product, but looks different.
Looks like the final product, but is not functional.
Appearance and function match the final product, but is made with different manufacturing methods.
Appearance, function, and manufacturing methods match the final product.
The main thing most electric mountain bike models have in common is that they look clunky and weigh a lot—under 18 kilos (40 pounds) is often considered “light.” FIVE BIKE is on a mission to change that, and is now proud to unveil the lightest e-MTB in the world: the eRS9.
At just 12.7 kilos (28 pounds) in its ideal configuration, the eRS9 is vastly lighter than the competition, without sacrificing road performance.
We first hit upon the FIVE BIKE idea in 2014. E-bike technology was improving all the time, but one issue was still plaguing the bikes (“weighing them down,” you might say): they were very heavy. That always bothered us, especially when it came to e-MTBs. As helpful as the electric motor was when cycling through difficult terrain, we still found ourselves wondering about the possibility of combining a powerful motor with a lightweight bicycle...
The basic FIVE BIKE concept was born. Installing a high-performance motor into a light bike isn’t the hard part, though. The real problem is making that bike a real off-road model, one that can handle even the most rugged trails. But then we found the solution: carbon! Carbon fiber combines exactly the elements we needed to create an ultra-light bike that was still as tough as nails. That’s why our bikes are manufactured entirely of carbon fiber, from the handle bars to the wheels.
Introducing the evation-Power Engine from FAZUA:
The Bottom Bracket
Every single component in our FIVE BIKES is designed with the best possible riding experience in mind. Our STEM-handlebar is part of our DIRECT DRIVE concept, which helps optimize the individual components of the steering system to ensure maximum steering precision. The result? Highly targeted steering with only minimal loss of rigidity. Unlike on other models, the handlebars and stem on our bikes are elegantly combined into a single element, providing even greater steering control.
We use top-quality High Modulus (HM) carbon fiber in our bikes, which reduces their weight and significantly improves rigidity.
Each FIVE BIKE’s configurable seatpost is tailored to its rider, so your bike is personalized before you ever take it out on the trail. The eRS9 is designed as a unisex bike. With individual size adjustments and your choice of 27.5" or 29" carbon fiber wheels, there won’t be anything standing between you and the perfect ride! Throw in a FAZUA drive system—which won gold in the Components category at the 2017 Eurobike Awards—and you’ve got a dynamic, custom-made combination of STABILITY, LIGHTNESS, and POWER, all at the perfect price and customized to your personal needs.
Risks and challenges
We’re fortunate to be in a very advanced phase of the FIVE BIKE project. That mainly means that the model we are presenting to you is only slightly different to the finished product.
Even so, we’re far from finished. We still have a few kinks to work out, to make sure that everything is exactly as we envision it. Our motors need to be fine-tuned, and we are in regular contact with the manufacturer about this.
We need to perfect the finish as well. We have tested our models, but we have yet to test them under extreme conditions. We are planning to have an engineer test the bikes weekly in preparation for this.
Future challenges can seldom be predicted, and avoiding them is not always in our hands. Supply shortfall might cause delays, for example. We have already made contractual agreements with several suppliers; additional agreements are near completion.
We have been working on FIVE BIKE since 2014, and we’ve consciously taken the time to make sure that the product we offer you today is close to production-ready. We’ve put our own capital and our hearts into this project, and we hope that, with your support, we can begin manufacturing and continuing to grow!
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