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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Quote from: AdamB on February 26, 2025, 04:58:42 PM
Hey everyone, I received my lcr017-d about a month ago. Since then, I probably did around 700km on. Last week, a creaking appeared from the bottom bracket area and was getting louder a I rode more (Also just realized why I felt like my bike was bending sideway when braking....) . This afternoon, while changing my BB, I discovered this pretty big crack

While searching through this forum, I don't think I've seen something similar. What should I do next? I already contacted LightCarbon, but don't have high hopes of resolution...

Please keep us updated.  I am hoping Light Carbon takes care of this. They should.
February 26, 2025, 05:18:05 PM 		1
Re: Lightcarbon: New LCR017-D (or Yishun R1058-D) I hope they do take care of this. Im thinking about buying one. If they dont its definitely going to scare me away.
February 26, 2025, 06:16:45 PM 		1
Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Quote from: HanzJWermhat on February 27, 2025, 06:53:58 AM
Huh this is weird the LightCarbon website doesn’t show a hole below the FD on the side of the frame only the back but on other people’s frame shots it’s clearly there

Might be because putting a 5mm hole there causes catastrophic failure?  My frame has the hole for the FD behind and lower on the seat post as it's pictured on LC's website.  A bit a hassle dealing with the wire but preferred over weakening the frame
February 27, 2025, 11:49:07 AM 		1
Re: Lightcarbon: New LCR017-D (or Yishun R1058-D) Second, the cause of the cracks
We conducted an in-depth investigation and analysis on the causes of the cracks in the frame. The following is our analysis:
1. The quality of the rough frame is qualified. First of all, it should be clear that the quality of the rough frame is fully in line with the standards at the rough stage. The finished product at this stage has undergone strict quality inspection to ensure the stability and safety of its basic structure.
2. Problems in the custom painting process
However, in the subsequent custom painting process, the key problem that caused the cracks appeared. In order to make the painting uniform and beautiful, the workers need to use sandpaper to manually polish the rough frame so that the paint has better adhesion. In this process, the processing workers of this frame may have overexerted when polishing around the holes, resulting in the destruction of strength.
3. In the quality inspection link after the painting, these weak parts have been covered by paint and the surface has restored thickness, resulting in these weaknesses not being discovered in time.
In summary, the appearance of cracks is mainly due to the excessive polishing force of workers during the custom painting process, which leads to the thinning of carbon yarn around the holes and is covered up in the subsequent quality inspection. We will strengthen training and management on this issue and add a quality inspection after the frame is sanded and before it is painted to ensure that similar problems do not occur again.
February 28, 2025, 07:58:00 AM 		1
Re: Lightcarbon: New LCR017-D (or Yishun R1058-D) 3. After-sales and quality assurance
In the field of industrial products, 100% pass rate is our pursuit, but we know that this is an unattainable goal, especially since most of the processes of carbon fiber frames are handmade, and defective products are inevitable. This is even big brands will inevitably encounter challenges in the production process and cannot fully guarantee the absolute qualification of each product. Some big brands have more than thousands of frames returned or destroyed for each style every year. Their OEM factories are around our factory, and we know this very well.
However, we are always committed to minimizing the probability of errors through strict quality control processes. The LCR017-D frame has currently shipped more than 8,300 pieces, but our defective rate has always been low.
It’s not terrible if there is a problem, we will solve it. We have excellent after-sales service.
We are very proud of our after-sales service. Whether it is a bicycle brand that purchases in bulk or an individual consumer, we always adhere to the established after-sales policy to provide customers with the most perfect solution possible.
About the recent problem, we did not choose to avoid it. When Wendy received Adam's feedback, we immediately took positive and timely measures to resolve it. This responsible attitude is the key to our winning the trust of more and more partners in the European market over the past decade. We firmly believe that high-quality after-sales service and unremitting pursuit of quality are the cornerstones of our long-term cooperative relationship with you.
February 28, 2025, 08:11:53 AM 		1