17TR Bicycle Ceramic Bearing Carbon fiber Jockey rihmaratas Set Rear Derailleurs Guide Wheel
Tootekirjeldus
* 17T suured juhtratas komplekt süsteemi
*17T pulleys or16T pulleys
* Säästab 60% ahela Hõõrdumiskestvus võrreldes 11T juhtrattaid "
* Keraamilised laager versioon salvestab rohkem kui 2,4 vatti keskmine võimsus võrreldes esialgse minnes süsteemi
* Terve süsinikkiust puuri
* Terve 7075 alumiiniumsulamist CNC lõikamine kerge juhtratas ja võllitihvti
*Color: Anode red, enamel, blue, gold, green
*17TR is suitable for Shimano 6700/6770/6800/6870/9000/9070 Ultegra/DURA ACE
*Ceramic Bearing Version Stainless Steel Hybrid Bearing Version Steel Bearing Version
*Weight: 61.4g
*he ceramic Bearing version is 1.2 grams lighter than the steel Bearing version
*Shifting speed increased by 20%-26% for Shimano systems.
*Support up to 11-28 cassettes, compatible with 11-30 and 11-34 with the help of an RD extender.
This is the fastest RD pulley system.
17TS & 17TR installation tips:
1, due to increased offset by the oversized pulley system, please make sure your RD and frame are aligned and calibrated correctly.
2, please check the length of your chain. Here is how to calculate, chain should be 10-20mm longer than the RD at 0 tension (shown as the picture below) when rests on the smallest chainring and smallest cog.
3, to lower the requirements for chain length and RD/frame alignment, we introduce the new 16T pulley system, 17TS and 17TR. Compare with 17T, the power saving would be lowered by about 0.2 watts but increasing chain stability and shifting speed.
Miks asendada käiguvahetaja rihmaratas
Esiteks, poorne kevadel positsiooni piir võiks reguleerida tagasi pinge suuresti parandada nõrkus originaal nõrk venitada, ja teha üles ja alla ketipinget vahel juhtratas ja hammasrattad palju piisavalt.
Teiseks kontakt hammaste arv või kontrolli hammaste arv vahemikus kett ja hammasrattad tagumise käiguvahetaja 17T on rohkem ajal käiguvahetus, see lihtsalt meeldib näputäis keskel ja kaks külge mõned pulgad, suurem juhtkangi, seda tugevam kontroll võimu.
Lõpuks pärast ümber kujundada puuri pöörlemise kõver, vahemaa ülemine juhtratas ja hammasrattad on paranenud.
Installimistoimingud
1. Rear derailleur decomposition, remove the original pulley wheel cage, as shown in the figure (original pulley wheel cage has been removed, removal method please refer to figure No.20)
2. Please confirm the aluminum alloy ring different side surface.
3. The main bolt gasket.
4. Install the nylon washer to the rear derailleur.
5. Mounting the main bolt gasket in the bolt, and apply grease.
6. Take the 17T carbon fiber pulley wheel cage, use No. 2 hex wrench remove alloy screw out on the back of the pulley wheel cage.
7. Remove upper pulley wheel.
8. After removing the upper pulley wheel, install the center bolts on the back.
9. Before installation the main bolt, the bolt should be fully greased.
10. Push the main bolt fully in the base of the pulley wheel cage.
11. Please confirm the alloy ring groove surface into the main bolt, and groove surface has greased.
12. Please confirm the alloy ring plane outward, and the alloy ring has greased.
13. Please confirm the spring mounting hole in rear derailleur.
14. The spring pin alignment spring mounting hole into the rear derailleur.
15. Confirm the spring pin into the base of the spring positioning hole.
16. Install the spring.
17. Aligned the spring pin with the hole on the pulley wheel cage
18. Marked in 1 to 4 is tension adjustment hole, the default initial mounting is hole 2. (tension: 4>3>2>1)
19. The pulley wheel cage fully pressed into the rear derailleur. confirm the main bolt alignment.
20. No. 4 hex wrench to tighten the main bolt to 4N.m.
21. Reset the upper guide wheel, insert the upper pulley bolts, but not tightened.
22. Rotating the pulley wheel cage to rear derailleur rebound limit block, press the topupper pulley wheel bolt out, blocking the limit block.
23. Tighten the upper pulley wheel bolt.
24. The installation is complete.
According to test result, increase the rear derailleur pulley wheel size could significantly decrease the friction between the chain plates caused by polygon effects during chain bending, and reduce the resistance for saving rider’s cycling power.
The chain is composed of several short pieces with an inch long, we could see the chain as one inch long with around one hundred and ten section lines, due to small diameter of turning circle, when the lines pass through standard 11T pulley wheel, it needs a certain angle to turn the transferring direction of chain for about 180° through two wheels, after increasing the pulley wheel size, the chain turning angle are decreased, so the loss of friction is less correspondingly. The results shows that 17T is a good balance point between weight and decreasing the polygon effects, To increase the size blindly will lead to arc decreasing not obvious, together with weight and volume adding. Compared with common 11T pulley wheel, the friction loss caused by polygon effects of chain could be decreased about 60%.
Besides, under the same transferring speed of chain, the axis rotation speed of 17T is slower for saving the self friction loss during bearing rotation, smaller cycle could also reduce the resistance of each turn rotation. To upgrade this ceramic bearing saves more power loss.
Faster gear shifts. 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.
Teiseks kontakt hammaste arv või kontrolli hammaste arv vahemikus kett ja hammasrattad tagumise käiguvahetaja 17T on rohkem ajal käiguvahetus, see lihtsalt meeldib näputäis keskel ja kaks külge mõned pulgad, suurem juhtkangi, seda tugevam kontroll võimu.
Lõpuks pärast ümber kujundada puuri pöörlemise kõver, vahemaa ülemine juhtratas ja hammasrattad on paranenud.
And we should also tell customer that the compatibility of 11-28T cogs, the length of chain is within the range of 405-410mm standard road bike chain stay, suggest using more than 114 links, but not too short chain, or it might lead to too large back tension and enlarge the tooth tip resistance between chain and pulley wheels. (In case customer just has short chain, suggesting install it to lowest tension of spring mounting hole).
It can faster SHIMANO system up and down gear to improve 20%-26%. save 2.4 watts more.
