Xiamen Carbon Speed rims/wheels

[wintermute]

Could you share some photos of your wheels? Am interested how UD paintless glossy looks like on these.

I asked for simple small logos with ud paintless glossy.

I've always thought that the matte carbon look just has a cheap open mould feel to it. I get it's the lightest option. The finish is really quite nice though on these.

My main worry is of course that they just won't survive the first rough road surface I hit nor will they survive the gravel racing I have planned. That and I won't be able to get a 30c tyre to meet rule of 105.

However, they were competing for my money with some LB Turbo 50's. To get the turbo 50's competitive in weight meant alpina hyperlight spokes and dt 180 hubs. That was 1980USD shipped (and that was at black friday prices, normally more like 2100). These were 870USD shipped.

[ry]

How loud are the hubs offered by Xiamen Carbon Speed? Is the freehub very "waspy" sounding? I only ask as Im not a fan of loud hubs (maybe one of the few now).

I got one of the "new ones" and it was (fortunately) quieter than I expected.  I think you can change the sound significantly by packing with grease.

[TommyGun]

Are carbon spokes worth it? I'm worried they ride harsh and are more difficult to tension due to less stretching nature of the material. Looks and weight are great - price also justifiable. But are they actually better as for ride quality, serviceability and longevity?

I will buy only carbon spoke wheels from now on. Have now already several carbon spoke wheels and the differance is noticable. Much better acceleration, stiffness,... And I find them just as comfortable as steel spokes. And if one worries about that, just drop a few psi in you tyres. The rolling resistance differance will be practicly zero, but you add comfort.

Service? Still not needed. And 2 sets have +10k km, and one set a bit bellow 10k km. I have about 80kg and do lots of steep climbing with lots of out of the saddle outbursts.

[jes2k13]

Quite frankly I have nothing negative to report or criticize. Easily the lightest and best set of wheels I've used from a value perspective. Mother nature gave me one single day today above freezing, and I was able to get in a 3 hour ride Z2 ride with some intervals mixed in.

GP5000 STR 32c. Running actual tubeless to avoid another audience upheaval on my YouTube. Tires measure 34mm at the rim. 55 PSI

Video drops next week.

Pat yo, love the video dude amazing now I am more drawn into ordering one,
If you could tell us the specs of the custom wheel build you had on your video? so I could replicate that?
Looking to get that 1200 1100gm wheelset heck even 1000gm with 40-45mm depth combo if ever that option exist with Xiamen Carbon Speed

[TommyGun]

¸..... There's one drawback however worth mentioning. I use my tires tubeless and when deflated, the bead tends to unseat probably due to the width of the rim. ......

Did someone elso also notice that?
When deflating, that tyre comes from the rim bed?

This is kind of problematic issue. Not only for traveling, but also for simple periodicly sealant check. And with possible bigger puncture, you probably cannot just insert a plug, as maybe you will not be able to seat the tyre with mini pump or CO2 cartridge.

[patliean1]

Pat yo, love the video dude amazing now I am more drawn into ordering one,
If you could tell us the specs of the custom wheel build you had on your video? so I could replicate that?
Looking to get that 1200 1100gm wheelset heck even 1000gm with 40-45mm depth combo if ever that option exist with Xiamen Carbon Speed

Thank you sir. These are the rims below. Just let Peter know the specific specs for the lightweight version/hubs/matte finish. Or that you want wheels similar to mine, and he will take care of the rest.

https://www.xmcarbonspeed.com/Productinfo.asp?f=1658

[glepore]

Did someone elso also notice that?
When deflating, that tyre comes from the rim bed?

This is kind of problematic issue. Not only for traveling, but also for simple periodicly sealant check. And with possible bigger puncture, you probably cannot just insert a plug, as maybe you will not be able to seat the tyre with mini pump or CO2 cartridge.

Its a giant safety issue on the road. Good grief, they almost banned hookless in the peloton over this. New rules require strict ETTRO compliance regarding tire size/internal width. So I don't know if was the poster or the rim, but that needs attention.

[TommyGun]

Its a giant safety issue on the road. Good grief, they almost banned hookless in the peloton over this. New rules require strict ETTRO compliance regarding tire size/internal width. So I don't know if was the poster or the rim, but that needs attention.

Definately a big safety risk.
I think I heard from some CRW wheels users also have this issue.

[Daviddavieboy]

Its a giant safety issue on the road. Good grief, they almost banned hookless in the peloton over this. New rules require strict ETTRO compliance regarding tire size/internal width. So I don't know if was the poster or the rim, but that needs attention.

One person here is running a 26mm internal width rim and a 30 mm tire. Any chart I seen recommends a 35mm tire. At the end of the day people will do what they want and blame the product for their choices.

[wintermute]

One person here is running a 26mm internal width rim and a 30 mm tire. Any chart I seen recommends a 35mm tire. At the end of the day people will do what they want and blame the product for their choices.

Pretty sure ETRTO or whatever is 5mm greater than rim width.

Obviously, the issue here is finding a 32mm tyre that doesn't blow out beyond 105%.

[Daviddavieboy]

Pretty sure ETRTO or whatever is 5mm greater than rim width.

 I didn't realize this (5mm or greater) and cannot find anything about it officially. Regardless of what anyone says the charts are there to limit liability if there is an accident.

[srf0638]

D65CU-33 T1100 20/20H UD paintless wheelset built with 5.0mm carbon spokes weigh around 1315g/pair, sorry, not able to attach pictures for now

Do you have a max rider weight for these? Also curious about max rider weight for same build with tbe D50CU-33. Thanks.

[Uberflo]

I asked Peter as I ordered two sets of wheels (65/33, 50/36). It’s 120 kg.

[srf0638]

I asked Peter as I ordered two sets of wheels (65/33, 50/36). It’s 120 kg.

Carbon spokes and 20h? Dang, that's pretty solid. Thanks.

[bobones]

Its a giant safety issue on the road. Good grief, they almost banned hookless in the peloton over this. New rules require strict ETTRO compliance regarding tire size/internal width. So I don't know if was the poster or the rim, but that needs attention.

You're confusing tyres blowing off over the rim and tyres falling off the bead lock into the rim well. The latter is no more dangerous than how a normal clincher tyre behaves on a non-tubeless rim when fully deflated. The former is the problem for hookless wheels, and is of course, very dangerous.

In any case, I've mounted GP5k and P Zero Race RS to my XMCS wheels, and they have stayed securely locked when the tyre is flat, even when rolled along the ground in this state. I'd go as far as saying they're the best behaving wheels I have for tubeless considering ease of mounting, inflation with just a track pump, and staying locked when deflated.

Regarding ETRTO recommendations, I have no qualms running 28s or 30s on these wheels because they are hooked, and the risk of blow off is infinitesimally small compared to hookless rims and tyres of any size. I'll note that Josh Poertner runs 32 mm tyres on his 29 mm internal width 3T Discus 45|40 wheels.