All-New website, same great service
We’ve merged with our North American website so there will only be one active website, but two locations to choose from. We have a Chinese “Global” location and a North American location.
For U shape rims braking surface issue last month (the beginning of Sept 2013), it is the clear coat painting on the braking track. So, the painting becomes peeling off after a few days. It is not allow to paint the brake track. The U shape 45mm clincher rim is very popular, there are quite a few orders, and the painting is too busy to finish orders in time, that is why we had one new guy added to do painting on U shape 45mm clincher rims. He is not familiar with painting process. He just paint the road rims the same as MTB rims. He did not know that, for road rims, there will be braking track surface left for braking. The painting can not be applied on the braking track surface. So, one batch of U shape road rims are painted at braking track surface last month. And it caused the braking surface issue. We are very sorry about this issue. Now the painting line has strict process guideline, to prevent similar issue happen again. And the QC department has added "braking track surface check" to the QC check list, no painting material on braking track surface. We know the performance for braking track surface is important for road bicycle rims clincher. Our production problems are fixed, and the braking surface is good now. Here are the pictures we made these days: We are arranging replacement rims for the customers that have braking issue. In the past, there is no this kind of issue for U shape 45mm clincher rims, except the batch of last month .We are very appreciated for the great support for some customers’ support. They trust us , and still accept replacement rims after we solve this issue. For the 45mm U-shape clincher rims shipped before September 2013, there are still no any complaint from customers. They are still riding well. We will keep improving the quality of products and professional service. It is always what we need to do.
After around 8 months testing, the new manufacture process performs much better than the old process. During these 8 months, we get almost no rim crack issue for new process(around 4100pcs new process rims are sold during these 8 months, only a few spoke hole pulled out at the beginning. And after we solved the spoke hole process. We haven't got any rim crack issue). But for the old process, there are some crack issue after customers' a few months riding. So, all wide 29er all mountain rim, 27.5er rim and New 26er DH rim(33mm wide&30mm deep rim) are now all used new process. And For new process rims, only can be available for Light-bicycle. We haven't sold to any other local trade companies. Some trade companies will sell the rims with old manufacture process at cheap price(some are the old process stock ones). If customers likes rim strong & with new process, please contact light-bicycle team. We will provide good rims & good after-sell service for all of you. The first two is for mold serial number. "12" standard for MR12( RM29C07 rim mold). The third letter, " M" stands for matte finish, " G" stands for glossy finish. The next two is spoke count, "32" stands for 32H spoke holes. The coming 6 numbers is for other number on our order list, like "917901" means your order is "917901" serial number on our order list. For the old process & stock ones, it starts with " SDXXXXXXXXX", or without serial number. Because the serial number is invisible sometimes for the old process. The MTB carbon rim manufactured with new process : carbon mountain bike 650b rim mtb 27.5 rim; Wider carbon mountain 29er rims clincher(tubeless-compatible); New 26er 33mm wide enduro MTB all mountain downhill carbon rim tubeless compatible; The MTB carbon wheels manufactured with new process are : carbon MTB 650B wheel mountain bike 27.5 wheels; all mountain 29er carbon mtb wheels clincher tubeless wheel ready; New 26er DH wheels(33mm wide&30mm deep rim)：ready for sell, we are preparing the files to list this product on our website for sell. Thank you for all your kind support, Light-bicycle team( engineers & sales) will keep improving rim quality. Learn more about the new manufacture process for mtb rims.
Several comments have been made about advantages of wheels which are more U-shaped than V-shaped and have a wider spacing between the bike rims. It is a relatively new development. There are some advantages of this bicycle rim design. Fisrt, It will have a straighter line and smoother transition from tire sideway to rim edge, for example; also less bulging of tire walls and make for easier passage of an inflated tire through brake calipers. With standard shaped road bicycle rims, the only design variations generally relate to rim width at the brake track and rim depth, with all other changes moving the road bike rims from a roughly 'V' shape to more of a 'U' shape. With the concept, the maximum width of the rim can be tuned independent of brake track width, while the widest point of the rim may also be moved up or down within the rim cross section. The tire attaches to the prongs of the U. The bottom part of the U is often flat on MTB carbon rims, but can be curved, sometimes even almost pointed, like the bottom of a V. Generally, the more curved or pointed the inner part of the rim is, the more strength it will have. Wheels offer unmatched aerodynamics across the widest possible range of wind conditions, while having the lowest possible cross wind sensitivity. These shapes are also not affected by tire width changes nearly to the effect that other ‘V’ and ‘U’ shaped rims are, allowing the athlete to choose the optimum tire for his/her event, and not have to compromise on a tire around which the wheel was originally designed, in some cases up to 15 years ago. Second, these clincher rims are with non-parallel brake track. The non-parallel brake track did not present a problem for braking. In fact, no need to alter the angle of brake pads. And it is nice to have the solid braking performance on an aero road bike wheelset. The non parallel brake track has been around for a while, it's on Zipp's carbon wheels and some Hed wheels too. This angled brake track will improve the airflow over the tire onto the rim, help toe in the brake pads, and also help to dissipate against heat buildup on the edge of the rim. The benefit of our new U shaped rims are: adding stiffness, due to a slight widening of the rim, and better braking, with a slightly angled brake track, not grew much in weight. And they are light, fast. when hit a few windy sections, it could not fell a thing in the cross winds. non parallel brake track Third, it is tubeless compatible. Customers can choose to setup tubeless on this rim if you ride tubeless. It will be light wheels with tubeless setup. tubeless setup perfectly Buy carbon U-shaped rims now >>
Dear customers, Recently, we find some carbon bike companies copy our website illegally, which significantly affects our reputation and widely misleads customers. Here we make an official statement to clarify that our unique website URL is www.lightbicycle.com. Any other sites,same or similar to our website, are all FAKE. In order to protect the interests of the customer against losses, it's our duty to remind customers to distinguish carefully. We feel honored that our customers present us strong support, but we will be not responsible for the products or related information from the fake websites. Thank you so much! www.lightbicycle.com
For some customers who ride aggressively, they are requiring stronger rims. According to customers'suggestion, we'd like to manufacture wider 26er carbon rim for MTB downhill and all mountain. The width will be 35mm wide and 30mm deep, this rim will be manufactured by new process, to make sure this new rim will be strong enough, to make it a read DH rim and AM rim. Do you like the new bike rims 26er with bead hook or without bead hook? All customers can mail us about your suggestion, like suggestions for rim width, depth, weight ,hookless, etc. All the information will be good for us to manufacture the rim perfect for customers. For hookless, it is new design. And specialized has used this design. It looks like the new design is popular. For hookless rim, it is easier for manufacturing. It's known that clinchers do offer an advantage in rolling resistance but is difficult to make a durable carbon bead hook. Please find as below. It is our design for the new mountain bike 26 inch rim. New 26er hookless rim Type: AM and DH rim Outer width:35mm Depth: 30mm Standard version: 360g/pcs+/-15 Reinforced version: 400g/pcs+/-15, or 430g+/-15 Tubeless: compatible Manufacturing process: the same new process as mountain bike 650B rims To make the tubeless 26er hookless rim stronger, we did the creative attempt—removed the bead hook. This design makes the 26er hookless rim stronger and less susceptible to damage when riders smash into rocks on the trail or land awkwardly off a jump. With the hook gone, engineers set out to tighten the seal between rim and tire. It's very necessary because the sealant had less material to cling to, making it easier for air to escape. The fix is simple but effective: the new rim has a wider inner shoulder, which gives the tire's bead more surface area to seal against. There's also a more robust rim strip that prevents sealant from leaking through the rim's spoke holes. Without the hook, we were also able to thicken the rim wall, making it even stronger. It also means that one potential weakness is removed. Together, these improvements keep the tire from blowing off the rim once it's inflated. All your suggestions are helpfull for us to make the rim good enough for mountain bike downhill and AM wheels. Newly update This new 26er rim for all mountain & downhill bike is already started to sell: New 26er 33mm wide enduro MTB all mountain downhill carbon rim tubeless compatible >>
Here is a list of hubs we stock and some more details to help you choose the best fit for your bike and riding style. For ROAD hubs (Novatec A291SL/F482SL, Powerway R36, DT Swiss 350 and 240s), they are for Shimano 11s and will come with a spacer for Shimano 8/9/10 speed. Novatec A291/F582 are for Campagnolo 10/11 speed. Bitex RAF10/RAR9 Shimano freehubs are ok for 10/11s, and Campagnolo freehubs are also ok for 10/11s. The quick release is NOT included with DT hubs and Bitex hubs , but customers can order light Ti-quick release skewers separately from us.
Aligning a bicycle wheel also is called truing a wheel. Because the fibers around the spoke face of the rim are 100% intact, spoke tension is distributed more uniformly around the rim. This makes it easier to build a wheel with even tensions, as well as produce a higher quality wheelbuild that will require less maintenance down the road. There is a trend in road bicycle wheels and triathlon wheels, they are becoming fat.There are many benefits for using wide rims. First, you can use a wider tire at little-to-no aerodynamic penalty. When the rim width is more close to tire's width. This airflow tends to be smoother than the lightbulb shape of a wide tie- narow rim. Why a wider tire is better? They reduce the risk of pinch flatting at given tire pressure.As well,you can use lower air pressure which absorbs more road shock, and reduce the rolling resistance. Wider tires tend tob have better grip on web or irregular road surface. In the past, road racers using 21mm tires at 150 psi (10 bar) for everyday usage. By 2012, we’ve seen nearly a universal adoption of 23 and 25mm tires by the Pro Peloton, at pressures from 90 to 115 pounds. Now, they often use up-to-28mm tires and even lower pressure. Second, the wide rims improve handling or cornering.For example, suppose there is a 23mm tire. Mount this tire on both a 19mm wide and 23mm wide rim. The tire’s contact patch on the 19mm rim is long and narrow, and with the 23mm rim is short and wide (relatively). The wider rim increases air volume slightly, and makes the tire’s sidewalls more vertical. In theory, the tire casing has to deflect less to make the same size contact patch – easy enough. Below is showing the ranges of tire size that is recommended for each rim size. For example, a narrow 13c clincher rim measures 13mm on the inside walls. This generally correlates to an outside width of 18.5-19.5mm, but it varies depending on manufacturer and rim wall thickness. An "average" road rim used to be a 13c or 15c, and many of the new wide rims are 17c. A 17c rim generally lends to an outside measurement of about 23mm. Please find as below for rims and tires width list. European Tire and Rim Technical Oraganization Standards Manual - 2007 Tire section width Rim width (mm) 18 20 23 25 28 32 35 37 40 44 47 50 54 57 60 62 13C * * * * 15C * * * * 17C * * * * * * * * * 19C * * * * * * * * 21C * * * * * * * * * * 23C * * * * * * * * * 25C * * * * * * * 27C * * * * * * 29C * * * *
The team at Light Bicycle is committed to producing a better carbon 650b rims & 650b wheels. Therefore, after months of testing and rider feedback on the newly released 27.5 carbon rim, Light Bicycle has moved to completely overhaul the manufacturing process greatly improving the strength and reliability of the 650b bikes rims. During the redesign, we focused on five main improvements, carbon length/layup, carbon base ring removal, air bladder removal, internal uniformity improvement, and enhance testing protocols. 1.The standard carbon layup procedure involves forming the rim out of three pieces, this simplifies and accelerates production however there are a few drawbacks in comparison to using a single piece in forming. Swapping over to single piece construction took a good amount of work but the benefits are worth it. Based on the single point of overlap the new rims are both stronger and lighter. 2. Another standard trend that we decided to change is that of using a pre-cured carbon ring as a base to build the wheel from. Again this simplifies and accelerates production, increasing uniformity during the old way of manufacturing. However there are a few notable drawbacks, chief among them performance loss with weight and ruggedness. When using a pre-cured ring in forming, the ring has to be heated again when going through final curing. This can impact the strength of the rim, so normally the ring is made extra thick to preserve strength at the cost of weight. With our new process we completely changed the layup schedule and manufacturing, forgoing the standard pre-cured ring. This takes a little longer and more effort but we have found the results to be excellent. In spoke tension testing the new rim could maintain twice the resistance while still shaving weight overall. Curing carbon ring 3. A third major difference in the manufacturing process is centered on air bladder removal. In the past due to the type/thickness of bag, a square hole was used in removal. This square notch was a weak point even after a carbon patch was installed and main rim structure was not as strong as it could be. With a change to the bag material we were able to use a smaller round hole for removal. At the end of the curing process the hole is then used as a standard spoke hole eliminating any excess loss of material or inherent weakness. 4. One of the major goals of the redesign was to improve internal uniformity of each rim. If a rim is not uniform it’s inevitable that there will be weak points that result. After the layup rescheduling, removal of the pre-cured carbon ring from the process, and change in the air bag removal the resulting rim is a huge step forward in strength and uniformity. 650B carbon rim cross section 5. Finally to top off the new 650b rims design we needed to be able to get true insight into the changes that were being made therefore we expanded the quality assurance testing. Several new tests as well as expansion on existing tests took place. List of current testing regiment is below. Test item Standard Remarks Lateral stiffness 5mm↓ Testing weight: 4.72kg Tire pressure 0.5mm↓ rim width formation Tire pressure 60psi Spoke tension 300KG↑ No visible crack Breaking test 300KG↑ No visible crack Impact test 600mm/22.5KG No visible crack Inspection item Standard Inner width 23+/-0.15mm Spoke hole diameter 4.5+/-0.15mm Valve hole diameter 6.4+/-0.15mm Appearance clean, even, no stain abnormal noise Shaking, nothing left in the rim Number of holes 24, 28, 32, 36… Weight standard +/-15g Flatness 0.3mm↓ Roundness apex – nadir ≦ 0.6mm 650b rim lateral stiffness test 27.5er rim lateral stiffness test 650b rims width check after tire pressure 650b rim spoke tension test 650b rims impact test New Update : All wide 29er all mountain rim, 27.5er rim and New 26er DH rim(33mm wide&30mm deep rim) are now all used new process. And For new process rims, only can be available for Light-bicycle. We haven't sold to any other local trade companies.Learn more about: How to distinguish rims with new & old manufacture process
Butted Aero Model T(mm) ØD1(mm) w(mm) ØD2(mm) α H(mm) L(mm) Weight(260mm) PBA 1425 9.0 2.0 2.5 1.05 95° 6.2 160-310 5.7 g PBA 1422 9.0 2.0 2.2 0.95 95° 6.2 160-310 4.7 g PBA 1420 9.0 2.0 2.0 0.95 95° 6.2 160-310 4.3 g SPEC Material Sandvik T302 (18/10) Advantage Pillar cold drawn technology.Double butted with three Blade options.Up to 30% weight saving without compromising strength. Thread Rolled (BC 56, DIN 79012)FG 2.3 Application Race/MTB/Down Hill Breaking Strength Spoke Tension According above datas and our client feedback, we find the PBA 1420 spokes are strong enough, and the weight is lightest, comparing to PBA 1425 spokes and PBA 1422 spokes. So we choose PBA 1420 spokes for wheelsets currently. Pillar psr x-tra 1420 spoke VS CN Aero424 spoke We have do some research on pillar 1420 spokes and CN 424 spoke these weeks. Both pillar 1420 spokes and CN 424 spokes are light, around 4.0g/pcs to 4.3g/pcs. But CN 424 spokes are much thinner and much cheaper（the price is only half of pillar 1420 spoke) , we have got some to test and if the spokes are ok, we can use it and make the wheelset price lower for customers. But while we build one wheelset, two pieces CN 424 spokes are broken. So, we decide not to use CN 424 spokes, still use pillar 1420 spokes. For pillar psr-xtra 1420 spokes,there are detail testing data on Pillar Spoke website like breaking strength, spoke tension breaking strength & spoke tension. But for CN 424 spokes, the data is not clear on CN Spoke website. Pillar PSR X-TRA 1420 spokes are really better than CN Aero424 spokes. We will keep on looking for better spokes with good price for customers,like DT super comp and Sapim CX-ray spokes. Sapim spokes are much expensive than pillar spokes, and we will try to contact the agent to get better price.