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Gates Carbon Drive CDX Timing Belt Systems

   Shown with FSA SL-K Light 11sp Double, MegaExo Carbon Cranks. We offer this beautiful light and efficient crank upgrade, too.

FAQ

Benefits?

• A customer has reported over 25,000 miles use! Enuf said.
• Incredibly smooth with chain rumble eliminated.
• More efficient power transfer, i.e., less rolling resistance than a chain while under load.
• Instant response from elimination of chain slack lag.
• Significant reduction in moving mass equals increased acceleration.
• Incredible weight savings of 290 grams or nearly 2/3 of a pound, for the price compared to a stock chain.
• Outstanding longevity with the Carbon Drive lasting 5 times longer than traditional chain and chainrings.
• Rarely needs adjustment.
• Never needs lubrication so chain maintenance headaches all but eliminated.
• Save money in the long run compared to buying a few sets of replacement chains and chainrings.
• No more timing chain chainring tattoos.
• No grease on upholstery if transport in vehicle.
• Travel tandems have the greasy packing chore of a timing chain eliminated.
• This is the CDX system. The CDC has been gone for over 10 years!

Shown with FSA 10sp MegaExo Carbon Cranks. We offer the alloy FSA Gossamer cranks for 10sp triple applications as the particular carbon model shown has been replaced by an 11sp double model.

Will it fit?

DO NOT GUESS! TAKE MEASUREMENTS CAREFULLY - INSTALLED PARTS CAN NOT BE SOLD AS NEW

 Know these 3 things to determine fitment.

1.  FRAME LENGTH - most important!

        METHOD A - Tension Point Attainment - Simple!

                1)  Loosen eccentric, remove the chain, so it will rotate through the complete adjustment range. 

                2)  Measuring between the 2 bottom bracket axles. Are you able to attain one of these numbers? 706mm, 726mm, 729mm, 739mm, 743mm.
 
                If YES, proceed to Step 2 OR further verify the frame length via Method B below.

                If NO, stop here as there is no belt system that will fit, there is no need to call asking if it will fit a 704mm, 724mm, 737mm, or 741mm maximum dimension. The answer is still NO, a Gates belt system will NOT work.

        METHOD B - Adjustment Range - Best Way!
        Write down these 2 dimensions (your frame length range).

                1)  Measure from bottom bracket center to bottom bracket center in millimeters 
                with the eccentric in the loosest possible chain position.

                2)  Measure from bottom bracket center to bottom bracket center in millimeters
                with the eccentric in the tightest possible chain position.
      
                 3) Do one of these FRAME LENGTH numbers, 706mm, 726mm, 729mm, 739mm, or 743mm, fall between the 2 numbers within your adjustment range? 

                If YES, proceed to Step 2.

                If NO, stop here as there is no belt system that will fit, there is no need to call asking if it will fit a 704mm, 724mm, or 737mm maximum dimension. The answer is still NO, a Gates belt system will NOT work.            

2.  CHAINRING BOLT DISTANCE  
        Measure from one chainring bolt directly to the next. Is it near 2.5" or near 3"

3.  NUMBER OF CHAINRING BOLTS  
        Count them. Do you have 4 or 5 on each spider?

4.  FIND THE CORRESPONDING GATES SYSTEM BY APPLYING THE INFORMATION ATTAINED TO THE CHART BELOW.

            Find FRAME LENGTH in the 1st column, match to your chainring bolt spacing and the number of bolts in the 2nd column, order kit by numbers in 3rd column.

Order the appropriate system using the assigned Kit Numbers, i.e., 706-5-SST+.

5.  INSTALL KIT
        Required for all except 4 bolt SL-K Light Carbon systems, necessary for proper sprocket to spider interface, provides optimal alignment via locking spacers that also insure bolts remain tight.  $50 - 10 alloy bolts, 20 locking spacers, and Torx tool, included, price with complete Gates system.

6.  GATES TENSION TOOL
        Highly recommended, insures proper Gates tension spec. $50 with a complete 

Gates system. Phone apps proved to be unreliable, not repeatable, hence the tension tool need.

7.  SPARE BELT
        Most opt to have a spare on hand, like chains, cables, and tubes. They weigh virtually nothing, should always be carried when on a tour or when at an out of town event. The 250T is $90 with a 66T, 69T, or 74T system, $124 with a 39T or 42T systems.

8.  FITMENT
        The system WILL fit when measuring instructions are followed, unless an unknown clearance issue surfaces. We have never seen one but.....

10.  INSTALLATION
        We will send installation instructions via email.

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