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.
What is the difference for 3k, UD and 12k ? The main type of carbon fiber used for the manufacture of bicycle parts are normal tow (under 12000 fibers) carbon fiber, like T700, or commonly known as 3k, 12k weave, and UD(uni-direction) carbon fiber. carbon rim 3k 12k ud carbon fiber weave 3k carbon fiber weave 12k carbon fiber weave UD Bicycle components, specifically carbon frames & rims are made using various grades of carbon fiber characterized mainly by their tensile strength and tensile modulus. Tensile strength is the amount of force needed to cause the fibers to break, while the tensile modulus is a measure of the carbon fiber's stiffness. The cost of carbon fiber goes up with the increase in tensile strength, or increase in tensile modulus. And for carbon fiber weave also determines the cost of material with larger weave prepreg (eg.12k) costing less, due to the lower cost of manufacturing. Carbon fiber layer(prepreg) has maximum strength only along the lengths of the fibers. That is why almost all the inside prepreg are using uni-directional carbon fiber while making carbon rims & frames. But the inside layup charts are still not identical. For example, the orientation are different( some are placed at 0 degree, some are 45 degree, 90 degree). This is very important to make carbon rims & frames with good strength & performance. That is also why using uni-directional fiber instead of woven carbon fiber (eg. 3k, 12k) creates stronger frames & rims. Thus, the main use of woven carbon fiber is for appearance. But there is one mechanical benefit for 3k woven carbon fiber. Putting the 3k woven carbon fiber around hole area, it can prevent carbon fiber from laminating while machining holes. For the weight difference, woven fiber has some area pass across each other. So, woven fiber is heavier than UD fiber. But, for rims, the size of carbon fiber is not large and only one layer different, the weight difference of woven fiber (3k &12k) and UD fiber is not big. Also, all rims have a weight range, for rims, it is +/-15g. So, sometimes, 3k rims & frames are lighter than UD. For big size product (like frame), 3k frame will be heavier than UD. And for 12k, the weight different is not much difference. carbon rim weave 3k matte carbon rim weave 12k matte carbon rim weave UD matte For more clear pictures of weave 3K 12K UD , please click this link:http://www.flickr.com/photos/light-bicycle/sets/72157631432948364/detail/
There are a few customers like to know the benefit of 38mm vs 50mm carbon road bike rims. The shape is almost the same for carbon tubular/clincher 38mm rims & 50mm rims . They are both aero wheels/rims. The 38mm is lighter, but the 50mm is stiffer. The .38 have a bit faster jump and the .50 hold speed better. If you live in a pretty windy place, the 50mm could prove to be a bit much to handle in any sort of cross winds. But the differences are small between these two rims. Rim / wheel stiffness / spoke count & tension/air pressure/rider weight & rider skill does effect ride quality also. It depends a little bit on the conditions you'll usually encounter. If it tends to be gusty, even 38mm carbon rims may be a handful at times. If it's pretty calm, you may be OK with 50. Some would go with 38mm set if I could only take one wheel to a race / crit. They seem more manageable & therefore use-able in more conditions, therefore more bang for buck in the long run. Some buys a set of 50mm and a 38mm front. Ride 50mm on calm days and swap in the 38 if it is too windy. Ask yourself what kind of riding you do and how your current rims/wheels serve you and buy the rims/wheels that fill a need. Welcome to comment if you have any other suggestion. This will be good for all of us.
Carbon fiber rim is black. If you like your rims to be nice & special with your own graphic design, we can do decal stickers on rims accordingly. If you need any assistance in designing, we are glad to offer help. Otherwise, we offer FREE customed rim decals if you like your stickers on rim to be with words "Light-Bicycle". Any style are all OK. If you need any assistance in designing, please feel free to contact us. For more clear sample pictures of carbon rim customed decals, please click this link:http://www.flickr.com/photos/light-bicycle/sets/72157631704846817/detail/
We find there are quite a few customers like our carbon mtb wheels to be built with DT 240s & DT bike spoke. And we have contacted with DT agent in China. It is ok to order DT hub from them. We are only carbon rims manufacturer, not good at spokes and hubs. We like to get suggestions from all customers. Which model of dt swiss hubs & spokes are good for mtb wheel & road wheel? 240s dt swiss? For spokes, is it aero spokes? DT competition spokes or dt comp spoke? Also, hubs for mountain bike wheel, we are going to order dt 240 hubs, central locked. Is that ok? Which size of hub axle do your guys prefer? Front 9mm/rear 10*135mm, front 15m/rear 10*135mm, and front 15mm/rear 12*142mm? These hubs & spokes will be used for our mtb 29er wheels, mtb 26er wheels and mtb 650b wheels Welcome to provide suggestion and then we can place an order for hubs & spokes accordingly. Then we can provide carbon rims with hubs DT swiss wheels. We do will provide good carbon rims tubeless mtb 29er, 26er and 650b rims, also for road carbon bicycle rims and bicycle wheels.
The ERD of our 650b 584mm rim is 565mm. The rider weight limits for carbon 650b rim will be 120KG. We have done the spoke tension this week. Please check the report as below. And the max spoke tension is more than 350KG. We have built the 650b wheel for riding testing, please find as below pictures. Front wheel is 26er, and rear is 27.5-inch wheel. We will ride on rocky mountain and to test the performance of this new rim. New Update : After long time testing and improving, 650b rims manufactured today are very good, with strong strength, We are ready to sell rims to customers and we are sure all customers will like the rim and like the strength. Please click here for purchase and we will do strength test for each rim before shipping, to make sure 650b rims are good for customers.Buy it now,click here: carbon MTB 650B rims
The looking samples of 650b mountain bike rim have been finished already. It is with 30mm for the outer width, 23mm for the inner width and 20mm depth. It is designed for tubeless compatible. 650b wheel The weight for looking sample rim is around 330g. We put the rim together with 26er wider rim, 650b rim,29er wider rim. And take a picture as below. 650b rim In next coming weeks, we will make testing samples to do spoke tension test, tyre pressure test, impact test and riding test. The weight for 650b mtb rim will be around 370g/pcs for XC( cross country) version, and the stronger version will be around 400g for AM (all mountain) version. This 650b bike rim will be ready to sell at the end of August. And we will also provide 650b wheel then. We look forward to all customers to help to provide some suggestion on 27.5 bike rim test, and then we can finally manufacture good 650b rims & 650b wheel for all customers. New Update : After long time testing and improving, 650b rims manufactured today are very good, with strong strength, We are ready to sell rims to customers and we are sure all customers will like the rim and like the strength. Please click here for purchase and we will do strength test for each rim before shipping, to make sure 650b rims are good for customers.Buy it now,click here: carbon MTB 650B rims
According to customers' suggestions, we have opened 26er wide rim mold and 29er wide rim molds. Now, the next project will be 650b rims. There are quite a few customers like rims of this size. We welcome all customers to provide some suggestions on the rim dimensions, like the outer width/inner width/depth/rim weight. Some customers say outer width be 30mm, and 23mm for the inner width, but some like outer width to be 28mm, inner width be 21mm. What do you think? 26er VS 27.5er VS 29er The 26er Pros: Excellent on steep and stepped climbs. Easy to accelerate out of momentum sapping situations. Braking was strongest, especially at the bottom of steep descents. By far the most responsive to pumping the trail. A light-feeling that encourages the rider to hop over or around obstacles. Cons: Descending is intimidating, especially after spending time on the other two wheel sizes.This bike requires more rider input and a bigger commitment. Rider position has a bigger effect on how the bike handles and responds. While a rider can "roll" a techie section on the larger wheels, the 26er rider has to attack and maintain enough speed to stay on top of the ruts, rocks and flat-edged bumps. The rider has to work on looking ahead, as the 26er places the rider lower over the front. The 27.5er - - 650b mountain bike Pros: it has animble feel that is way closer to the 26er than the 29er,but it doesn't require the rider to work as hard. Your body position always feels neutral. You can pump the 27.5er along the trail, and when the trail heads downward, it allows the rider to remain relaxed. You don't need to attack rough sections. These wheels do a good job of staying on top of the rough stuff, and the front end goes where you want it to go. Cons: We couldn't come up with a ride negative. It doesn't steer as fast as a 26er, but we never found a trail so tight that this made a difference. It didn't roll over the rough sections as smoothly as the 29er, but again, it wasn't a big enough difference to put the 27.5 rider off the wheel of the 29er. The 29er Pros: The big wheels are great for descending. They smooth outnasty trail that would have you puckered on the 26er. The added confidence inspires you to remain more relaxed as the wheels float over rocky terrain. The big hoops offer the best traction of the bunch, both in corners and on loose climbs. This bike requires the least amount of body English to stay hooked up (going up or down). Crewers noted they remained seated longer in the 29er. Once up to speed, the bike holds momentum well—and holding momentum is what the 29er is all about. Cons: Getting up to cruising speed takes more effort. Steep climbs or regaining speed following a momentum- zapping misstep is noticeably tougher. The only plus here is out-of-the-saddle efforts work great because the rear tire maintains traction. The large wheels don't respond as well to pumping the trail, and lofting the wheel requires more effort. This bike doesn't have that lively squirt of acceleration you feel on both the 26er and 27.5er when working the backside of a whoop. The larger rotor up front wasn't enough to give this bike the braking power we wanted. THE RANKING Win: This 27.5 mountain bike proved to be the most versatile of the three hardtails. It did an excellent job of blending the best traits of the 29er and 26er with-out ever feeling like a compromise between the two. This bike scampered away from the 29er on steep uphills or after a speed-zapping mistake. It then gapped the 26er on the other side of the mountain on the way down—all the while delivering a very resilient ride that didn't beat up the rider. New Update : After long time testing and improving, 650b rims manufactured today are very good, with strong strength, We are ready to sell rims to customers and we are sure all customers will like the rim and like the strength. Please click here for purchase and we will do strength test for each rim before shipping, to make sure 650b rims are good for customers.Buy it now,click here: carbon MTB 650B rims