The application of the belt drive is a subtle refinement that produces a notably enhanced cycling experience. In comparison to a traditional roller chain, consumers easily recognize the practical benefits of a CDRIVE® belt system:
Unlike a typical bicycle chain, the CDRIVE® belt cannot be brocken for installation. Our system requires a specially designed bicycle frame. The rear end of the frame should either be able to be opened at the rear dropout or have an elevated chainstay design that will not require the belt to pass through the rear triangle. Also, the system requires the frame to be made to close tolerances so that the beltline (chainline) is adequately aligned. The frame must meet the stiffness requirements to permit a minimum of flex, particularly at the bottom bracket and dropouts.
The industrial grade reinforced CDRIVE® belt is stronger than any bicycle chain. It will not break under normal use, however improper or adverse handling of the belt may compromise it's durability. The CDRIVE® belt will stretch, but it will last several time longer than a chain before it does.
Belt systems have a slightly higher amount of inherent friction than do chain systems. Therefore, the power transfer efficiency of a belt is at a negligible disadvantage when compared to a traditional roller chain. However, the overall efficiency quickly surpasses that of a chain in adverse conditions - a belt will not degrade through usage or rust due to lack of lubrication.
The CDRIVE® belt will last from two to ten times longer than a traditional roller chain. Our extrapolated usage is 6 years or 10,000 miles.
Our CDRIVE® belt has been re-engineered extensively to alleviate skipping issues. With proper installation, the CDRIVE® system will not skip under any normal pedaling pressure. In extreme circumstance, a strong rider might be able to skip the belt. Improper set-up and installation of our belt will increase the possibility of skipping.
Once tensioned during installation at the factory, the CDRIVE® belt will not need any further adjustment. In addition, we offer a pulley guide component to eliminate belt slippage and reduce the possibility of skipping.
The CDRIVE® system weighs less than 300 grams. This is less than half the weight of chain system.
Cycle Drive Systems has concentrated research and development specifically to provide the bicycle industry with the lowest cost effective belt drive system available. Our position has been to develop an economically priced option that will operate effectively for sectors of the bicycle industry where a belt drive system can deliver the most cost effective advantage; this includes Electric, Youth, Folding, Commuter and Leisure bikes. The CDRIVE® belt system is not suitable for higher performance bicycle applications such as off-road, moutain biking and racing. The CDRIVE® system has been present in the bicycle industry for six years and continues to refine its offerings including OEM installation add-ons. This effort to make it easier for companies to develop models where the system can provide viable and scalable alternative.
The belts are made under very carefully controlled conditions using a combination of synthetic materials that include nitrile rubber and special glass fiber reinforcing tensile members.
The sprockets are manufactured with a high grade thermoplastic/fiber composite. This material provides light weight, excellent durability and superior weat resistance.
The system is not recommended for off-road bikes where conditions could be very muddy, nor for road bike requiring derailleur gear systems. Otherwise, it's suitable for any kind of bicycle that has been designed to use the system.
Any internally-gearing or coaster brake hub with a standard 3-spline driver may use our COG-3 rear cog. Any hub with a standard Shimano 9-spline driver may use our Cog-9 rear cogs - this includes most free hub - equipped hubs and NuVinci CVTE hubs. Please see our Designing For CDRIVE page for a complete listing of our compatible hubs.
This is currently 90 days; the belt and sprockets are shipped FOB Los Angeles, USA.
No, the belt will never need lubrication. The only maintenance required might be to occasionally wash off any dirt that might accumulate on the sprockets with a brush and water.
The compounds used in the CDRIVE® system have an excellent resistance and should not be affected under normal conditions, even if the belts will be outside under direct sunlight or rain.
Temperatures ranging from -20°C to +50°C can be tolerated.
In cases of heavy contamination (i.e. sand, mud etc...) it is advisable to clean the drive components (sprockets and belt) using water and a light brush. Solvents liek gasoline and petroleum must be avoided.