Competitive Advantages of Dynamic's
Chainless Bicycles

Dynamic Bicycles and its factory - Sussex Enterprises, based in Taichung, Taiwan - have been manufacturing shaft drives since 1991. In this time, we have developed a reputation worldwide as the leader in shaft drive technology. Although other companies have copied our technology, we continue to lead the market with innovations that push shaft drive performance and durability to meet the ever increasing expectations of our customers.

We are often asked how our shaft drive bicycles compare to competitor shaft drive bicycles. Dynamic's shaft drive bicycles are superior in several important ways:

• More Efficient Shaft Drive - Dynamic uses a more advanced shaft drive using spiral bevel gears in a lighter weight and more compact design. This means it takes less pedaling effort to propel the bike forward and to maintain cruising speeds. Dynamic's shaft drive also minimizes the grease used to lubricate the gears, making pedaling easier. Other shaft drives fill the front gearbox in grease - so you have to pedal through all that grease - making them harder to pedal. These cheaper shaft drives also use larger, heavier gears and bulkier designs that add weight - particularly rotational weight which makes the bike less efficient.
• Lighter Weight Bicycles - Dynamic's bikes weigh as much as 10 POUNDS lighter than competitive shaft drive bicycles. We use higher quality, lighter weight components that make our bikes ride faster and pedal easier.
• Stronger, More Durable Frames - Dynamic's frames use an aircraft grade 7005 aluminum for strength, light weight, stiffness and durability. One of the keys to the strength and stability of Dynamic's frames is that we use both seat stay tubes and horizontal frame stay tubes on both sides of the rear triangle of the frame (surrounding the rear wheel). This preserves the structural integrity of the frame. Our competitor's shaft drive bike frames eliminate the critical horizontal frame stay on the drive side of their frame. This puts force and strain on the shaft drive that it was never designed to handle. Our competitor fails to understand that the shaft drive is a drivetrain, not a structural component. By compromising on this frame component, our competitor's frames cause unnecessary wear and tear on gear and bearing components causing inefficiency, excessive wear, and potentially premature failure of the shaft drive and/or the frame. In addition, our competitor uses only a single bolt to connect the shaft drive to the rear dropout of the frame at the rear wheel which creates a single point of failure at this critical interface.
• Technology Ownership - Dynamic owns the company that invented the modern day shaft drive and produces the shaft drive in our own factory. No one knows more about this technology than we do. And although other companies deep inside China have copied our ideas so they can churn out cheaper products, they cannot keep up with our continuous advances nor our passion for advancing shaft drive technology. In addition, every other company that offers shaft drive bicycles is merely a distributor, without any real manufacturing control over shaft drive quality. As the manufacturer of our own shaft drives, Dynamic continuously pours resources into quality assurance and improvement. This is why Dynamic's bikes are used by more people for more demanding uses than any other shaft drive bicycle in the world. And we have more satisfied customers to prove it.
• Faster, Better Hill Climbing - Dynamic's bicycles are faster than other shaft drive bicycles. Not only are our bicycles more efficient, which enables them to reach faster speeds, but most of our bicycles use 700C wheels. These 700C wheels are a larger diameter than 26" wheels and user higher pressure tires which reduces friction and delivers a longer distanced traveled for each pedal stroke. Our competitor uses 26" wheels with low pressure tires, which make you work harder with every pedal stroke to travel the same distance as our bikes. In addition, many of our bicycles use Shimano's 8-speed hubs which provide both lower AND higher gearing for easier hill climbing AND faster speeds than competitive shaft drive bicycles. Plus, since our bikes are so much lighter than our competitor's shaft drive bikes, our bicycles can reach and maintain faster speeds more easily. This makes our bicycles more versatile and more competitive with traditional chain bikes.
• More Frame Size Options - Dynamic's bicycles are available in multiple frame sizes to make sure every rider is safe and comfortable on their bicycle. Our competitor offers just one frame size for their bicycle. They do this because it is cheaper to produce, but it means the bike is only appropriately sized for a small range of riders. If it is not the right frame size for you, it can be unsafe and uncomfortable. Dynamic offers a range of frame sizes that offer a perfect fit for adult riders or nearly every height.