lightcarbon warranties

[patdam]

I will share my experiency of lightcarbon company warranty. Only facts, everybody could doing themself their opinion.

I'm an heavy (100Kg) old (65) quiet rider. For you can appreciate my level of commitment, a link to the exit (the 2nd and 1st on moutain) where craks appaired on swing arm of my lightcarbon LCE971 (the 3rd iteration of this swing arm whoas breaked with other customers).
'Mirkwood' | Relive

THe answer of lightcarbon when i have submitted the problem
"
Hello patrick,
Unfortunately, the after-sales department rejected the request for free after-sales service.
Have you modified the rocker link yourself? Because there are some holes on it to reduce weight. You reinstalled the rocker link in the wrong direction, causing the rear seat fork to not rotate downward to the specified position when the rear wheel hits upward, so the rear seat fork was hit in an undesirable way.

Pics of my swingarm fully compressed, assembled in that's i estimate the best way

Pics of the swingarm fully compressed and assembled in the right position for lightcarbon

 

[patdam]

To complete, the last mail of light carbon after i have sent pics to prove that it have nothing additional constraints (and impacts) on swingarm with my assembly.
Please check the correct direction of Rocker link of LCE971.
The design direction of rocker link not only includes whether the rocker link can be touched by the seatstay, but also the stress direction. The design of the frame is a whole. If the cracks appear due to the wrong installation direction, the after-sales department will not agree to replace it for free, and will charge $430 for shipping and material costs.

Rocker link of LCE971

4 new items added to shared album

photos.app.goo.gl

 

[jb759h]

The part is backwards and heavily modified. It's pretty simple. Pro Tip: don't drill speed holes in random parts of your linkage.

 

[patdam]

The part is backwards and heavily modified. It's pretty simple. Pro Tip: don't drill speed holes in random parts of your linkage.

I agree that can be an justification for an company who does not want to assume their product fails. But could you explain the impact of these modification on this cracks (occured on other customers before) ?

because initially they said that reverse position cause unexpected contact and constraints and after i have proved that wrong, they speak about "stress direction" of an molded alloy bridge who work in compression following 2 axis.

 

[JimLee-Lightcarbon]

Hi Patrick,
Sorry about the cracks on the frame.
But I'm sorry, the after-sales department rejected the application for free replacement.
As I told you in the email, because you modified the rocker link and drilled holes on it to reduce its weight. Then you installed it in the wrong direction.Incorrect installation direction is the cause of cracks.
When the frame was designed, the auxiliary role of the rocker link in unloading the rear triangle was considered, because the distance it can move in the forward and reverse directions is different. If the direction is installed incorrectly, when the shock absorber is compressed to a certain extent, the rocker link can no longer move, and all the forces brought by the rear wheel will accumulate at the location where the crack appears.
Now the after-sales department requires you to pay then we replace the new rear triangle for you; I can also do my best to give you some discounts, but free is not feasible. I'm sorry.

 

[patdam]

You have another time changed the cause of the breaks, initially rear side contact, after stress direction and now front side contact. Sorry you are another time wrong, no contact who restricted the swingarm travel in any position whit my assembly. I can prove it. do you want i dismantel all to take pics of each parts able to be in contact ? i can also in prevision of your next justification perform metrologie of the bridge to prove that my holes havent't modified any case this dimensions, parallelism and squareness.
As i wouldn't pass more money in this frame, end of storie for me (after share my experiency). I don't know if other heavy rider has make the same mistake than me and purchase this frame or an "nervous youngers" who will jump with it ? but if occur, we will seen another breaks if i true. If not, that would mean you are true and my "modifications" are the alone cause.

another pics fully compressed whith my assembly where we can see nothing contacts

 

[Astro66]

You drill holes in the part, and put it in backwards. The frame cracks and you create a thread called Lightcarbon Warranties ??? ...... I think it needs a different name .......

You are too funny .......

Best of luck mate ....

 

[patdam]

You drill holes in the part, and put it in backwards. The frame cracks and you create a thread called Lightcarbon Warranties ??? ...... I think it needs a different name .......

You are too funny .......

Best of luck mate ....

see you later if another breaks... or not .

 

[Bndit]

You have another time changed the cause of the breaks, initially rear side contact, after stress direction and now front side contact. Sorry you are another time wrong, no contact who restricted the swingarm travel in any position whit my assembly. I can prove it. do you want i dismantel all to take pics of each parts able to be in contact ? i can also in prevision of your next justification perform metrologie of the bridge to prove that my holes havent't modified any case this dimensions, parallelism and squareness.
As i wouldn't pass more money in this frame, end of storie for me (after share my experiency). I don't know if other heavy rider has make the same mistake than me and purchase this frame or an "nervous youngers" who will jump with it ? but if occur, we will seen another breaks if i true. If not, that would mean you are true and my "modifications" are the alone cause.

another pics fully compressed whith my assembly where we can see nothing contacts
View attachment 154475

You have clearly assembled it wrong way...and drilled holes to it. No reason to complain about warraty.

 

[JimLee-Lightcarbon]

Hi Patrick,
Let's be calm and have a problem-solving mentality.
We have mentioned several possibilities that may cause the cracking of the carbon fiber parts. Remember that these are possibilities, because we cannot observe the process of the frame cracking, and neither can you. We can only analyze the reasons through the current description and photos. Perhaps one, two, or three of them caused this bad phenomenon.
However, the installation direction of a part is fixed when we design and test it. Only in the correct direction can it achieve its correct function.
If you buy a frame or a complete bicycle from other big brands now, and then modify it, and install the rocker link in the wrong direction, do you think after-sales service is free?

 

[JimLee-Lightcarbon]

When you told me that the frame had cracks, I responded to you immediately and did not completely shirk any warranty responsibility. Instead, I told you that we have a complete warranty policy. Then I asked you for more photos and applied to the after-sales service department.
Carbon fiber frames are purely handmade and it is impossible for them to be 100% qualified. This is the meaning of warranty, and we never deny it; if there is a problem, we will find a reasonable way to solve it. Including in this forum before, there have been customers who have raised after-sales and complaints about our products, but in the end they were all resolved.
I hope we can continue to communicate,