Xiamen Carbon Speed 2025 new carbon crankset

[Taicho_Cyclist]

I just received the LEESE LSE-C01 carbon crank from Aliexpress which took nearly a week to arrive in Asia. The format is in EASTON DUB as I have the TIME Alpe d'Huez in DUB, making the swap a straight forward affair should I replace the current crankset.

The crankarms are detachable from the DUB axle which made installing of spider or powermeter a breeze. Indeed I have a XCADEY Gen 2-S powermeter spider lying around since the previous LEXON Carbon crank could not install this spider properly. All I took was less than 5 minutes to assemble the powermeter together with the crankset and it was all set to be mounted on the bike. Of course, I do not have a torque wrench to go 40nm but a good yank of the allen key till there is no play is probably going to keep things together.

Total weight is 500 grams flat = crankarms + axle + XCADEY Spider; compare that to a Shimano Ultegra R8100 crankset which weighs 700 grams without chainring and we get a decent 200 grams shaved off.

I have done a short introduction video here - youtu.be/SdwSQCgpMFM  in youtube.

[Sakizashi]

There's a mix regarding DUB and BSA bottom brackets. Despite not being limited by size, SRAM still use smaller bearings on BSA bottom brackets. Some other manufacturers like Wheels Mfg use 6806 bearings.

See here:
https://weightweenies.starbike.com/forum/viewtopic.php?t=165166

However, it's also worth considering that loads of major bike brands use either BSA or BB86 frames with SRAM builds and there are seemingly no reports of widespread issues.

SRAM uses that smaller bearing in the PF30 as well. I have not looked at a t47, but no reason to believe it would be an exception. I believe they use the same bearing across the range. It's a custom bearing you can't buy, so it's very much a one-off.

[raisinberry777]

Total weight is 500 grams flat = crankarms + axle + XCADEY Spider; compare that to a Shimano Ultegra R8100 crankset which weighs 700 grams without chainring and we get a decent 200 grams shaved off.

Bit less for the weight savings - Ultegra R8100 is 547g in 165mm without rings, see here:

https://handsonbike.blogspot.com/2023/09/12-speed-crankset-comparison-dura-ace.html?m=1

In any case, better off starting a new topic as this is for the XMCarbonSpeed cranks, not the Leese ones.

[Yunglord]

Yes I concur with the above poster my r8100 with 52/36 rings in 165mm is 709grams.

I'm looking forward to the 24mm version to see if it's worth getting over the dub axle.

[j4m1eb]

I've just got a new grouspset and weighed every component
R8100 50/34 165mm - 705g

[toxin]

^This has nothig to do with the topic of this thread come on

[j4m1eb]

^This has nothig to do with the topic of this thread come on

I was just confirming the weight of Ultegra cranksets as surely the point of a Carbon crank is it is lighter?

[aeroskiii]

I was just confirming the weight of Ultegra cranksets as surely the point of a Carbon crank is it is lighter?

wow thanks for the information its exactly what we wanted. none of us knew that the aluminum crank with a steel spindle is heavier than the ultralight carbon crank and we couldn't look it up. Thanks for the info!

[Rebel_Yell]

eneral question on this and other Carbon cranksets. I am around 100kg and wondering how carbon cranks hold up with heavier riders.  Any experience or ideas?

[toxin]

I'd hardly consider shimano the gold standard of cranks

[toxin]

?

[Sander2177]

eneral question on this and other Carbon cranksets. I am around 100kg and wondering how carbon cranks hold up with heavier riders.  Any experience or ideas?

Should be fine imo, although if you have cash done waste it on THM tough     had one at 90kgs and was a bag on sh1t any climbing out of saddle noisy as f1ck! and fiddley as f1uck as well to set up. For the 60/70kgs rider!

[Biscaye05]

@PeterXu do the factory and designers making this have experience making big brand or Chinese brand thermoplastic cranks? 

SRAM had early problems with delaminating inserts and a few cracks.  Easton had a lot of issues early on, and still some now.  Various cheap Chinese ones have had the same.  Quality Chinese ones from Incolor and Elilee both had extensive issues initially.

I.E. If the factory and designers have experience, we might expect the launch product to work fine.  If not ... I think it may be a mess.

I guess we're not getting an answer this @PeterXu?

[PeterXu]

I guess we're not getting an answer this @PeterXu?

We don't sell any items without QC, we have been doing the in-house testing for couple of months and had some pros tested these cranksets too, otherwise how could we announce releasing them? Thanks for your concern and questions.

[Jamoche]

@PeterXu when do you expect the 170mm dub crank to be available? Thank you.