Quote from: MarioCanario on August 26, 2026, 03:29:40 AM
the CEMA BB has directional marks on all parts. hard to get it wrong unless you accidentally interchanged L and R. always gently screw it in by hand first.

I ordered the ceramic CEMA (thought i try ceramic once again). took me 2 aproached with this thing to get dub wide chain line spacing sort of right.
after a few km i wanted to try different crankset. but ceramics bearings didn't survive a really really mild hit with my rubber hammer onto the spindle 

anyone got long term experience with the CEMA ceramic bearing? can't believe it is that fragile

I have been using them for 6 months now. No problems or complications since installation. I did notice, however, that it was very difficult to get a DUB crankset through. I have never had that with other crank and bottom bracket combinations.

Quote from: weldi181 on May 04, 2026, 03:51:29 AM
Hi all again,
i still cant fix the issue.
I reinstalled crankset AND bb multiple times, using alot of grease and the correct torque. i also used spacers to eliminate play in the bb. Everything runs smovely and without any noise, when using the small chainring. But when using the big chainring and applying force the left pedal, there are these weird noises. I can rule out the chainring and pedals too, because i also reinstalled them and on the small chainring everything is perfect.
A lot of research let me come to the conclusion, that the BB does seem to not be able to handle the torque/torsion of the crank spindle when using left pedal with big power and using the big chainring.
Has anyone any experiences like this? What else can I try besides buying a new bearing?

Are you sure it isn't your seatpost causing the noise?

Your story sounds very familiar to my own situation right after building my bike. Small chainring (relatively little power) no noise, and large chainring (more power) noises. I could also swear the sound was coming from the bottom bracket, but it turned out to be the seatpost making the noise.

Perhaps a simple question to rule out whether it is the seatpost: Do you also hear the sound when you apply force to your pedals while standing upright? Or only when you are sitting on the saddle?

Quote from: krroller on April 29, 2026, 10:57:57 AM
I have the LCR018-D currently in shipment.  It was sent out last week and I ordered in mid February, FWIW.
I also ordered the upgraded CEMA T47 Bottom bracket with ceramic bearings in size 85.5-28.99 for DUB.

The following is a Noob inquiry to tap the group's expertise on SRAM Crankshafts, chainline and bottom brackets. 

I plan to use the SRAM Force XPLR AXS 1x13 drivetrain with the following components:
SRAM Cassette XG-1371 XPLR E1 13 Speed 10-46 (part number 00.2418.160.000)
SRAM Force XPLR AXS Rear Derailleur, Black, 13 Speed E1 (part number 00.7518.193.000)
SRAM Force 1 XPLR Power Meter Crankset, Black, 12/13 Speed, DUB Wide, 160mm, 42T, E1 (part number 00.6118.737.000)

In essence, the entire group set will be SRAM Force AXS E1.

The questions I have are related to the bottom bracket spacing. 
The SRAM Force E1 cranksets are DUB Wide. 
The CEMA bottom bracket from LC is a DUB bottom bracket.   

Will this combination work and keep the chainline in proper position? 
Will spacers suffice to keep the chainline aligned?
Do I need to purchase a DUB Wide bottom bracket, and if so, what is suggested?

Pic of my frame and related items attached.

I also ordered the Cema dub BB from Lightcarbon. In the box is an instruction manual that tells you the amount of spacers needed drive and non drive side for road and wide cranksets. Hope this helps.

Quote from: Fronk on April 27, 2026, 08:15:30 AM
Has the 3D file been uploaded here? I don't think I saw it.

Here's a link to that post; https://chinertown.com/index.php/topic,5970.msg100696.html#msg100696
It includes the step file and images that explain the problem.

Quote from: sdicby87 on April 27, 2026, 06:34:23 AM
I installed SRAM BB (DUB T47 Road Bottom Bracket 85.5mm) with SRAM Force E1 2x crankset. Using 3mm spacer that came with BB, my non-drive side has bit of too much empty space. There is no play and I could not move it sideways. Plastic ring is maxed out, and it jumps if tightened more.

Torqued crankset to 54 Nm according to guide. Did I mis something or just need to order extra spacer?

If it jumps, the small screw is too loose. Tighten it a little more; then you should be able to tighten the preload until it no longer moves.

Here is my recently built LCR018-D in size 58, raw carbon color with a glossy finish.

The components used for this build are mostly parts I still had lying around or parts taken from my previous bike.
About myself; I'm 1.92 m tall and have an inseam of approximately 91 cm.

Frame: Size 58 with storage compartment
Handlebar: 400x100
Stem: Zero offset
Groupset: SRAM Rival with Force power meter crankset and Goldix 10-28 cassette
Wheelset: DT Swiss ERC 1100, 45 mm deep
Tires: Conti GP5000S TR 30 mm front, 32 mm rear
Saddle: Ryet Carbon
Bottle cages: Tacx
Bottom bracket: CEMA Ceramic DUB
Handlebar tape: BBB FlexRibbon
Pedals: Look Keo 2 Max

Bike weight = 7.8 kg (pedals, mounts, bottle cages etc included)

---

Building up the frame went very smoothly. No remarks there at all. The only "downside" is that the steerer tube does not sit flush/horizontal with the top of the stem, which means you cannot place spacers above the stem to experiment with the handlebar height in search of my optimal position. I noticed there is a 3D-printed alternative on the forum, so I'll try that at some point in the future.

First impressions of the ride quality after about 500 km: I don't live in a mountainous area, so my feedback is mainly based on rides on flat roads, with the occasional short, punchy climb, as well as rides with a lot of crosswind.

I can only be positive about the frame so far. It feels stiff, comfortable, stable, and in my opinion quite responsive/direct. I can't really compare it to high-end frames, as I've never owned one myself. My previous frame was an Orbea Orca, and the difference compared to that frame is significant. In short: nothing but a big smile so far.

As many others have already mentioned here, I also experienced a creaking seatpost on the first ride. The seatpost that was supplied is the latest version, fully wrapped with friction tape all around. I was able to solve the creaking by adding a small amount of electrical tape around the seatpost, together with the necessary amount of carbon assembly paste.

That was it. Enjoy all riding your bikes this weekend!

Quote from: Shayzzz on March 20, 2026, 12:50:07 AM
Hello !

Quick question about stem length for the LCR018-D that comes with the HBR17 handlebar ! I'm 191cm tall with an inseam of around 91/92cm. I've decided to go with a 58cm frame, but do you know if I Should go for a 110mm or 120mm stem length?

Thanks!

As Fronk mentioned, there is no correct answer to you question. I am the same height and have the same inseam as you but need a 100mm stem 

Quote from: neXt on March 18, 2026, 11:16:12 PM
Just asked for an update on shipping of my frame (size 50)..

Ordered: 26.01.26
Estimated shipping: Mid March
Updated estimated shipping: Mid April

From Jims answer, painting seems to be the bottleneck right now.
I'm quiet a bit disappointed about this. From what I read here in the forum this delay seems to be the norm and not an outlier, they need to get better telling real world leadtimes!

Ordered my frame (raw carbon - glossy finish) on 28/01/2026. Frame is ready, but handlebar 400-100 is not in stock at the moment. Would be shipped in about 10 days or so. Maybe you have some custom paint scheme?

Hey everyone,

While I'm eagerly awaiting the arrival of my frame, I'd like to do some prep work for the custom decals I want to apply.
Could anyone who has the frame in hand provide me with the following dimensions, if possible?

• Width and height of the Lightcarbon logo on the front of the headtube, or the width of the headtube itself (I know it's tapered, but widest part is okay).
• Width of the seat tube (rear-facing part).
• If anyone has a size 58 frame: The height between the top of the seat tube and the top of the wind-eye.

I've already searched this thread but haven't found anything. With these dimensions, I can already have my decals ready in time for when my frame arrives.

Thanks!

Quote from: Schneedolf on February 04, 2026, 03:49:14 AM
Also update from my side:

I paid the invoice in beginning of January and the timeline was 4-6 weeks production. Now it is till the end of march, so about 12 weeks/double the estimated timeframe.

I communicated this, and will get bottle holders as a "present" for the delay.

You cannot do much at the moment, it is what it is.

Size 58/glossy carbon

I'm in the same boat (same size, finish and time of order).
This is the reply I got from Jim:

QuoteThe completion time for the painting is currently uncertain. According to the schedule, it should be finished by mid-March, but every year during the Chinese New Year holiday, some workers experience delays in returning to work.