Wonderful Clearance Bicycle Rear Derailleur Pulleys Wheel 17T Bike Carbon Fiber Jockey Wheel For Shimano 6700/67706800/6870/9070 Bicycle Parts
|45 days Money back Returns accepted if product not as described, buyer pays return shipping; or keep the product & agree refund with seller.|
Guarantees: On-time Delivery 60 days
Wonderful item could improve the high quality of your life. Qualified to be bought. Cheap rate as well as free shipping. Allow's acquire before rates increase.
An excellent service or product is produced as well as given of course to provide benefit and make you comfortable when you utilize it. There are numerous means to obtain a quality product. The swiftly growing on-line globe makes it less complicated for you to search for products to your taste and also demands. One of these products is truly extremely understanding of your demands for this Limited Bicycle Rear Derailleur Pulleys Wheel 17T Bike Carbon Fiber Jockey Wheel For Shimano 6700/67706800/6870/9070 Bicycle Parts special goods. High technology-made items offer the purchasers the advantage they desire.
Bicycle Rear Derailleur Pulleys Wheel 17T Bike Carbon Fiber Jockey Wheel For Shimano6700/67706800/6870/9070Bicycle Parts
17T rear derailleur pulley wheel Material ：Full Carbon fiber frame+Ceramic bearings+7075 Aluminum Alloy Guide Wheel(CNC) Color :anonized red gold ti blue black Applicable：Shimano 6700/67706800/6870/9000/9070
For bike type:Road Bike/Above 20” Fold Bike
Color:red gold blue black purple
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.
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.
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.
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We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries,
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||2018 Sep 29 No comment|
||2018 Sep 22 You have to ensure that prior to you acquire any item you have actually currently seen and also read the consumer reviews of the item initially. By doing this you could be certain that you are obtaining the appropriate product that will certainly fit your requirements.|
||2018 Sep 15 Good|
||2018 Sep 08 Their service is very excellent and very fast. Order today, Seller sent today too. If buying in bulk then there is a special price for you. This product is highly recommended .|
||2018 Sep 01 No comment|
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||2018 Aug 11 -|
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||2018 Jul 14 Perfect|
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||2018 Jun 23 Total perfect item!|
||2018 Jun 16 Perfect|
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||2018 May 26 Complete perfect goods!|
||2018 May 19 Nice|
|Shipping Company||Shipping Cost||Estimated Delivery Time|
|3 - 7 days|
|3 - 7 days|
|5 - 14 days|
|Post Air Mail||Free Shipping||15 - 45 days|
|Return Policy||If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.
Expresstobuy | World Express to buy | Fast Delivery Shipping details (Nota Bene) N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
If you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).
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