Lightcarbon: New LCR017-D (or Yishun R1058-D)

[edy]

Before contacting LC I wanted to check whether you guys had any similar experience. Yeah, it's a one-bolt design which is not preferred option. If the shape of the seat post is proprietary, this may be a long-term issue. I will reach out to LC and keep you posted on their response.

[rasch]

Did anyone had an issue with the creaking seatpost? Saddle clamp developed a nasty creak which I am unable to silence. Also, when torqued to the prescribed 12 Nm, I can move the seat angle with by applying a bit more force.

Never ran into that problem!
Check also your saddle rails. If it's a "china saddle" rails might be uneven

[edy]

It's actually coming from the area marked as red where the clamp attaches to the body of the seat post. When I apply a bit more force by hand to the front/back of the seat, the clamp slips and I am able to rotate the seat vertically.

[Fer9n]

As i am finally getting towards assembly, I noticed that there is a plugged hole on the downtube and I am not sure what the purpose is.
Doesn't seem like a great spot to be missing some carbon, any structural worries necessary?

[edy]

Lower (bigger) for mechanical front derailleur, upper (smaller) for Di2.

[Fer9n]

Ahh, didn't consider mechanical shifting.

Thank you

[ricchirock]

Did someone buy a LCR017-D in the smaller size? 46
It seems all the frames I saw posted are all big sizes. Short people dont buy it?

[edy]

It's actually coming from the area marked as red where the clamp attaches to the body of the seat post. When I apply a bit more force by hand to the front/back of the seat, the clamp slips and I am able to rotate the seat vertically.

Quick update, without any fuss the LC offered to sent a replacement. I am currently waiting for a response if there is an alternative with a 2-bolt clamp option.

[neobiker]

Did someone buy a LCR017-D in the smaller size? 46
It seems all the frames I saw posted are all big sizes. Short people dont buy it?

I think the 46 size had been added only recently.

[HanzJWermhat]

As i am finally getting towards assembly, I noticed that there is a plugged hole on the downtube and I am not sure what the purpose is.
Doesn't seem like a great spot to be missing some carbon, any structural worries necessary?

There’s a discussion a couple pages back in this thread about this. A user reported their frame cracked there. LC responded saying it was caused by thinning of the material during sanding for paint. It’s not an ideal spot to put a hole since the surface is largely under tension from pedaling and holes aren’t as strong under tension as they are compression. The hole for FD mech is “new” looks like it wasn’t on older bikes so only a matter of time to see if other failures occur. That said other manufacturers put a hole there with no issues, it’s just the LC one being in a complex area so only time will tell. The frames are now UCI certified so I hope they did fatigue on the design with that hole for homologation. 

Waiting in my frame, so I hope this is not an engineering mistake and it was just a manufacturing error on that one frame.

[BeR]

There’s a discussion a couple pages back in this thread about this. A user reported their frame cracked there. LC responded saying it was caused by thinning of the material during sanding for paint. It’s not an ideal spot to put a hole since the surface is largely under tension from pedaling and holes aren’t as strong under tension as they are compression. The hole for FD mech is “new” looks like it wasn’t on older bikes so only a matter of time to see if other failures occur. That said other manufacturers put a hole there with no issues, it’s just the LC one being in a complex area so only time will tell. The frames are now UCI certified so I hope they did fatigue on the design with that hole for homologation. 

Waiting in my frame, so I hope this is not an engineering mistake and it was just a manufacturing error on that one frame.

It seems to me that UCI certification focuses more on frame geometry than on the safety of the frame itself (strength tests, etc.). They should only require a certification from the LC stating that the frame complies with the standards (ISO9210, etc.).

[Dark17]

And I am in the Chinese frame market again and looking to build a new bike since my Yishun R086D is now taking a toll on me. (Geometry is too aggressive and I ain't getting any younger)

So to anyone who bought this frame, how is the ride feel?

[rasch]

And I am in the Chinese frame market again and looking to build a new bike since my Yishun R086D is now taking a toll on me. (Geometry is too aggressive and I ain't getting any younger)

So to anyone who bought this frame, how is the ride feel?

It's definitely less agressive than the one you had, but it is still somewhat agressive. So it really depends on what u are looking for.

Ride quality is good, construction quality as well. It's a solid choice and a breeze to assemble. I have one for myself as well.

[Dark17]

Wait, am I seeing this right? The size 520 has stack of 521.2 and reach of 390.8 and that's make the stack/reach ratio a wopping 1.33 and it makes it more aggressive than my current bike. Am I correct or am I missing something?

[neobiker]

Check the seat post angle and whether this makes it less aggressive?