Xiamen Carbon Speed 10 years anniversary special promotion

[zett]

Consider wheelsets with CS-D65CU-33, but worried about 26mm internal. I bought lot of 25mm Schwalbe pro race (good deal 27$/piece) and want still used them. On my actual 21mm internal rims they have 26mm, I thing on 23mm it will be something like 27mm. So I suppose that on this 26 internal rim the tire will have something like 28-29mm. Question is, will it work and is it safe?

This combination of rim width and tire width is not recommended and likely not safe to ride.

Another thing: Peter, I sent a mail with a request a couple of days ago, and didn't get a reply so far. Does it simply take a bit longer or is it possible that my mail was lost?

[toxin]

It's already not a good idea because you will be cornering on the sidewalls with that combo

[PLA]

is it possible that my mail was lost?

Might have been an uphill journey, so it's taking longer to get to him.

[SirBikealot]

Another thing: Peter, I sent a mail with a request a couple of days ago, and didn't get a reply so far. Does it simply take a bit longer or is it possible that my mail was lost?

did you look into your spam folder? Had they the same "problem" but tada there it was.

[PeterXu]

This combination of rim width and tire width is not recommended and likely not safe to ride.

Another thing: Peter, I sent a mail with a request a couple of days ago, and didn't get a reply so far. Does it simply take a bit longer or is it possible that my mail was lost?

I don't have any unread email in my mail box recently. Which email address did you send to? If possible send me PM with your email address, I will try to send you email first then you can reply me with your request.

[Daviddavieboy]

See the attached geometry and some pictures for CS-R01 frameset, size 54cm is around 950g, max tire size is 700x32C, T47-68 bottom bracket, available sizes: XS/S/M/L

 Should be perfect for a road/light gravel all road bike. For those interested it's already on geometry geeks.

[maza]

Consider wheelsets with CS-D65CU-33, but worried about 26mm internal. I bought lot of 25mm Schwalbe pro race (good deal 27$/piece) and want still used them. On my actual 21mm internal rims they have 26mm, I thing on 23mm it will be something like 27mm. So I suppose that on this 26 internal rim the tire will have something like 28-29mm. Question is, will it work and is it safe?

Sounds like you bought nice wheels for your previous Lada and now you're desperate to use them on your new Mercedes. Sell them for $25 per piece and move on.

[Vaclav]

Sounds like you bought nice wheels for your previous Lada and now you're desperate to use them on your new Mercedes. Sell them for $25 per piece and move on.

I am planning go to 28mm tire, but in theese dayes, when you buy 28mm tire produced this/last years, manufacturers do not count that you have 26mm internal rim and theese tires are in the end 32-33mm wide - this is for me too big jump and bike life change from my actual 25mm. 

[zett]

28 mm is not a good idea either, that is still well outside ETRTO spec. 26 mm inner width is for 35+ mm gravel tires. 30 mm is already questionable, but 28 mm? no way.

[Nkearb]

28 mm is not a good idea either, that is still well outside ETRTO spec. 26 mm inner width is for 35+ mm gravel tires. 30 mm is already questionable, but 28 mm? no way.

The craft racing works 5060 has a 25mm internal rim in the front and they recommend "above 26c for the front tire". I assume 28c on a 26mm rim would be fine but I wouldnt just because I think on these particular rims a 30/32c would be better in every way.

[zett]

ETRTO actually went back in the 2024 spec and now requires 29+ mm tires on 25 mm rims. Pretty sure because combinations like 28 mm tires on 25 mm rims turned out to be problematic. There were some incidents, at least one in the pro peloton as well.

[Da11as]

See the attached geometry and some pictures for CS-R01 frameset, size 54cm is around 950g, max tire size is 700x32C, T47-68 bottom bracket, available sizes: XS/S/M/L

Hey Peter! Looking good, when you plan to release it? Does second frame follows similar, endurance-focused design, or is it more racy?

[toxin]

ETRTO actually went back in the 2024 spec and now requires 29+ mm tires on 25 mm rims. Pretty sure because combinations like 28 mm tires on 25 mm rims turned out to be problematic. There were some incidents, at least one in the pro peloton as well.

Pointless rule when there is no standard for measurent. Some 28c labeled tyres measure 30 mm on a certain rim while others measure 29 mm and anothed still might measure 32 mm. Now that manufacturers are catching up to modern trend we're getting new tyres that are labeled the same width as older ones when in reality they're actually notably smaller. But because the number on the label is the same ppl will happily run tyres that they would have previously considered 'incompatible'.

[PeterXu]

Hey Peter! Looking good, when you plan to release it? Does second frame follows similar, endurance-focused design, or is it more racy?

Sorry I am not able to upload the pictures, 2nd frameset is CS-R06 frameset is similar to CS-R01. PM me with your email address, I will send you the details.

[bmrk]

Guys. We are going to release our T1100 rims next week. The rim in attached pictures is D50CU-33 T1100 rim UD paintless finish, under 390g/piece.

We are going to build these rims with carbon spokes and our hubs. The promotion price for below combo wheels would be 635 USD/pair excluding shipping, lasts Dec 24 :
D50CU-33 T1100 rims 21/21H UD paintless
Carbon Speed hubs 54T rachets TPI ceramic bearings center lock straight pull for 100*12/142*12 with Shimano HG driver
Carbon spokes with nipples

The weight for this combo wheelset would be around 1245g/pair

And we are doing 20/20H version lighter hubs which won't be released until 2025, it will save another 40-45g on the wheels by then.

Hello @PeterXu,
Are the D50CU-33 T1100 rims available already?