The CDRIVE™ system is intended for leisure, commuter and child cycles, or wherever low maintenance, durability and extra safety are desirable features. It is not suitable for high performance bicycles or off road use.
For successful functioning, some important considerations should be addressed at the initial design stage of the intended bicycle.
FRAME DESIGN
- The frame must have an elevated chain stay or separated stays joined by the rear axle bolt to allow installation of the belt.
- Stiffness in the rear stays and bottom bracket shell must be sufficient to avoid flexing which can cause misalignment under pedaling load.
- Chain stay length is critical; the belt length cannot be altered. Allow for adjustment of + and - 10 mm to install and tension belt.
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- A belt tensioning system must be included in the frame design. It is recommended that the rear sprocket centers (dropouts) be adjustable fore and aft in order to install the belt and to allow for its proper tensioning. Common BMX style chain tensioning devices are satisfactory.
- Frame manufacturing tolerances need to be more tightly controlled than with a regular chain driven set-up. Accurate alignment of all components is crucial.
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