Good Quality Guide Wheel System - Bicycle Jockey Wheel For Mountain Bike – Kactus Sports Detail:
17TSR Carbon Fiber Bike Rear Derailleur Pulleys Jockey Wheel Ceramic Bearing Ultralight Bicycle
Product description
*12/17T super large size guide wheel set system
*Saves 45% chain friction resistance compared to 11T guide wheels”
*Ceramic bearing version saves more than 2.2 watts of average power compared to the original transmission system
*Full carbon fiber guide arm
*Full 7075 aluminum alloy CNC cutting lightweight guide wheel and TC4 titanium alloy spindle
*Color: Anode red, enamel, blue, gold, green
*17TSR suitable for SRAM RIVAL FORCE RED
*Ceramic Bearing Version Hybrid Ceramic Bearing Version NSK Steel Bearing Version
*Weight: 63 grams
*The ceramic bearing version is 1.2 grams lighter than the steel bearing version
1.Different from other brands with eccentric designs, we designed these two products adopting the SRAM concentric design. The benefit of such design is that it won’t have any negative impact on neither the crisp shifting feel nor the tooth capability of the cassette nor
This is also the exact reason why Shimano ceased the production of 6800/9000 and upgraded their design to R8000/9100.
Therefore, we choose 12T/17T over 17T/17T.
Compared to original transmission system with 11T pulley, our products decrease friction resistance by 45%, ceramic bearing pulleys save more than 2.2 watts on average with each pedaling, increase shifting speed by 20-26%. Enhanced chain stability by implementing narrow-wide tooth upper pulley for more accurate and crisper shifting.
2.Extended tooth for lower pulley, to prevent chains from coming off.
One thing to clarify is that, it’s not wise to implement narrow-wide tooth to any situation.
Yes, narrow-wide tooth provides better stability, but it is achieved at the cost of more friction resistance. As designers and manufacturers, we aim to be adaptable, to provide different products for different occasions, to suit your need best, not bragging a certain “high tech” which looks fancy but brings negative impact for your experience.
3.Titanium alloy CNC shaft.
To pursue the goal of lightweight, we overcame as many obstacles as possible, even it’s just for 2-4 grams of improvement. Shafts of products for ETAP and mechanical are both made of 6/4 titanium alloy. Even in original SRAM products, titanium shafts are only available with RED RD, not even ETAP, ETAP shafts are made of steel.
4.Patent design for ultra-lightweight concentric upper pulley structure.
One 7075CNC screw to fasten 7 pieces. Easy to maintain or customize while remain light and durable.
Why replace derailleur pulley wheel
Firstly, porous spring position limit could adjust back tension largely, improve the weakness of original weak stretch, and make the up and down chain tension between guide wheel and cogs much more adequately.
Secondly, the contact tooth number or control tooth number between chain and cogs of rear derailleur 17T is more during gear shifting, it just like to pinch the middle and two sides of some sticks, the larger the control lever, the stronger the control power.
Lastly, after redesign the cage’s rotation curve, the distance between upper guide wheel and the cogs is improved.
Installation steps
1.Fist, find the screw of pulley wheel cage in the back of rear derailleur
2.Remove the screw with cross tip Screwdriver
3.Pull out the screw
4. Remove and grease the screw and spring before assembly the new 12-17T carbon cade
5. We suggest fix the spring in the left hole for the first time assembly
6. Grease the titanium axle before assembly new cage
7. Push the spring in the hole
8. Clockwise rotate the cage andpush into rear derailleur
9. Push all when make sure the positioning post right in the position
10. Push back the screw in the hole and fix with cross tip screwdrive
11. Finish
Product detail pictures:
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It adheres on the tenet "Honest, industrious, enterprising, innovative" to develop new items frequently. It regards buyers, success as its very own success. Let us produce prosperous future hand in hand for Good Quality Guide Wheel System - Bicycle Jockey Wheel For Mountain Bike – Kactus Sports, The product will supply to all over the world, such as: Juventus, Sao Paulo, Bangladesh, We believe that good business relationships will lead to mutual benefits and improvement for both parties. We have established long-term and successful cooperative relationships with many customers through their confidence in our customized services and integrity in doing business. We also enjoy a high reputation through our good performance. Better performance will be expected as our principle of integrity. Devotion and Steadiness will remain as ever.
By Sophia from Hamburg - 2016.07.07 13:00
This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.
By Arlene from Algeria - 2016.04.08 14:55