Don’t get it “TWISTED”…….. This is the LIGHTEST TARMAC in the WORLD!! with GC Performance
Video Don’t get it “TWISTED”…….. This is the LIGHTEST TARMAC in the WORLD!! with GC Performance
Video Don’t get it “TWISTED”…….. This is the LIGHTEST TARMAC in the WORLD!! with GC Performance YouTube Channel.
Don’t get it “TWISTED”…….. This is the LIGHTEST TARMAC in the WORLD!!
Building the Lightest Tarmac SL8: A Journey in Bicycle Engineering
Creating the lightest bicycle possible is no small feat, especially when you’re dealing with some of the most advanced materials and cutting-edge components available today. In this article, we’ll delve into an exciting custom build of the Tarmac SL8, a project aimed at breaking weight records while maintaining performance and functionality. If you’re passionate about cycling or interested in bike engineering, this guide will take you through the intricate world of high-performance bike building.
Understanding the Challenge
The Background
The Tarmac SL8 is already known as a lightweight bike, frequently praised for its balance of aerodynamics and stiffness. However, the aim of this build was not simply to have a lightweight bike; it was to create the lightest version possible with a stock paint job and a 2x drivetrain configuration. The journey begins with a base weight of 5.85 kg for the standard model, which is impressive but leaves room for significant weight shaving.
Competitor Insights: Twisted Wheels
Before launching into our build, it’s important to acknowledge the contributions of fellow YouTuber Twisted Wheels, who attempted a similar challenge with impressive success, achieving a final weight of 5.49 kg. Twisted Wheels focused on modifications such as a one-by drivetrain, lightweight brake calipers, and custom components. Their project provided invaluable insights that laid the groundwork for our upgraded approach.
Customizing the Build with Premium Components
Frame and Cockpit Adjustments
Starting with the frame, the stock Tarmac SL8 comes in at 740 grams. However, our project involved swapping to the ultra-light Project Black frame, subsequently saving about 62 grams. This initial decision was a pivotal step, as every gram counts in this race to lightweight efficiency.
Additionally, we decided against the stock cockpit in favor of a lighter aftermarket option, which saves an additional 145 grams. The stock handlebars, while functional, were swapped for a 38×90 carbon fiber bar that boasts a significant reduction in weight while maintaining rigidity and responsiveness.
Weight-Saving Innovations
The pursuit of lighter components didn’t stop at the frame and cockpit:
- Titanium Fasteners: Upgrading bolts and thru-axles to titanium offers not only weight benefits but also improved durability.
- Lightweight Cassette: Swapping the standard cassette for a specialized titanium cassette weighing just 156 grams was a game-changer, shedding 60 grams from the total setup.
As each component was evaluated for weight savings, the challenge intensified, but so did our commitment to excellence.
The Precision Weigh-Ins
Detailed Weighing Process
Throughout the build, meticulous attention was paid to weighing each component before and after installation. This included everything from brake calipers to individual bolts. Here’s how some notable components stacked up:
- Stock Handlebar: 329 grams
- New Aftermarket Bar: 245 grams (saving 85 grams)
- Chainrings: The original 52/36 setup weighed 192 grams, while the lighter 50/34 setup reduced weight by 20 grams.
Every ounce mattered in our quest; thus, this step was equally crucial for confirming the efficiency of our upgrades.
Realizing Marginal Gains
The goal was to achieve what we termed MMG (massive marginal gains). By systematically swapping out heavier parts for lighter versions, we aimed to maximize each modification’s impact. The ultimate aim was to reach a total weight of 5.44 kg—a considerable benchmark within the competitive cycling community.
Testing the Performance
Road Readiness
With all new components installed, a thorough road test was essential. The bike was not only styled for aesthetic appeal but, more importantly, engineered for performance. As with any high-performance machine, the ride characteristics were closely monitored throughout the testing phase.
Climbing and Efficiency
Given that our customer planned to tackle a 10,000-foot climb over 100 miles, ensuring the bike remained functional was vital. Lightweight components must strike a balance with performance quality, and our build passed the test with flying colors during trial rides. The lighter setup allowed for quicker ascents and periods of sustained power transfer, further solidifying our ultimate goal.
Final Weigh-In and Conclusions
The Moment of Truth
After hours of meticulous assembly and testing, the final weight was revealed: an astonishing 5.44 kg (12 lbs). This figure not only established our project as one of the lightest configurations of the Tarmac SL8 but also set a new standard for lightweight builds in the cycling arena. The incorporation of high-end materials and components allowed for this successful outcome, challenging the status quo.
Future Considerations
While this particular build did not include certain optional components—like a light mount for additional efficiency—the Tarmac SL8 still stands as a testament to the possibilities of modern cycling technology. Plans are underway for an additional update once the anticipated wheels arrive for further weight adjustments, potentially pushing the limits even further.
The Takeaway for Cycling Enthusiasts
Learning from the Journey
Embarking on a journey to craft the ultimate lightweight bicycle is not just about reducing grams; it encompasses understanding component interplay, tailoring performance to individual cycling needs, and pushing the boundaries of engineering. Equipment quality and thoughtful choices define a successful build.
Engaging with the Cycling Community
This endeavor reinforces the bond between custom bike builders and the broader cycling community. Sharing knowledge, respecting competitive spirit—like that shown by Twisted Wheels—and promoting innovation highlights the spirit of this sport.
Final Thoughts
Whether you’re an enthusiast looking to build your custom lightweight bike or simply appreciate the engineering marvels of cycling technology, the journey to create the lightest Tarmac SL8 exemplifies a pursuit of excellence in bike craftsmanship. Join in on the conversation and explore the ever-expanding world of cycling innovations today!
With the cycling community growing and evolving every day, sharing insights into such unique projects promotes learning and inspires others. Join the challenge, explore your customization options, and perhaps you too can break new weight records!
The opinions expressed in this space are the sole responsibility of the YouTube Channel GC Performance and do not necessarily represent the views of CicloNews.