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Re: LightCarbon 918? The lightcarbon quality is kinda questionable.
I got the LCFS958, which I use from time to time. Yes, it's rideable (in a bike park), it does not disintegrate and will likely hold for a while. But the quality of pivot mounts and bearing seats is average and below: there're plenty of cavities/porosity/signs of delamination. I made a mistake when I didn't check everything on arrival and only took a good look one month after the end of the warranty during bearings replacement (yeah I rode the bike quite rarely on vacations).
Another thing to remember is the warranty: it counts from the date specified in the invoice (that excel sheet with the quote you got from them). All the time required to get the frame built/painted/shipped is included within the warranty period, so you can confidently remove these few months from coverage once you get the frame.

Would I buy anything from lightcarbon ever again? Absolutely not. Would recommend? Certainly not.
560 bucks frame + 140 shipping + VAT was probably an okayish deal back in 2021, but still have a feeling (in a bad way) that I bought something from aliexpress on sale. Looking now at their frame design, my experience and others' (check the road bike section), I will stick with another supplier (which I did, actually).
July 05, 2025, 05:05:18 AM 		1
Re: Zen Carbon Wheels Xiamen Good day Forum Members

For those who appreciate hard data and full transparency, I’m sharing the test results for our new Vaporlite 50 mm rims. These were developed with low weight and high durability in mind, so we wanted to publish the full set of measurements rather than just marketing claims.

Vaporlite 50 mm — Test Data Overview
Specs:

Depth: 50 mm
Holes: 24
Weight: 330 g (±15 g)

1. Roundness & Flatness
Roundness: 0.15 mm — Pass
Flatness: 0.11 mm — Pass

2. Vertical Tensile Stiffness
Load: 50 kgf
Vertical deformation: 1.55 mm — Pass

3. Lateral Stiffness
Load: 20 kgf
Lateral deformation: 6.285 mm — Pass

4. Inflation Test
Tyre: 700×28C
Pressure: 140 psi
Inflation flatness: 0.13 mm — Pass


Impact Test Results
Setup:
Load: 20 kg
Spokes: Pillar bladed
Spoke tension: 120 kgf
Rim weight: 330 g
Hole count: 24
Impact energies tested: 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 J
All four impact points passed up to 100 J with no damage.

To view test results images here are links:
https://ibb.co/cc1TGckK
https://ibb.co/tpKxNN5L
https://ibb.co/LXLwxwnh
https://ibb.co/dJtXSnv3
https://ibb.co/Kc399RTm
December 22, 2025, 03:24:42 AM 		1