Xmcarbonspeed CS-R01 build

[patliean1]

Those photos are voided unless you also provide both your Strava and FTP 

[Rebel_Yell]

What is the bottom bracket on the CS-R01?  I do not see it on there site. 

[Daviddavieboy]

What is the bottom bracket on the CS-R01?  I do not see it on there site.

T47

[Rebel_Yell]

Another question for those that did get a custom paint job from CS.  Did they put a coat of clear coat over the paint job?  I might not be calling it the right thing.

What did you guys all do about handlebars! The CS one piece integrated or other?

Thanks. Getting ready to order this fame. 

[Davide Panzeri]

T47

hi
who did you order the bottom bracket from?

[Davide Panzeri]

hi
i bought cs handlebars

[Rebel_Yell]

hi
i bought cs handlebars

Integrated or aero bars?

[Daviddavieboy]

hi
who did you order the bottom bracket from?

My local bike shop. Genuine SRAM DUB T47. Being said I had one of the bearings give out after 700 kms which is hardly better than a KACTUS one I bought for my other bike. My solution was to replace the bearings only - Going on 1000 km now.

FWIW the KACTUS one was near $50 and the SRAM one was $75 CDN

The bearings for the KACTUS BB were $10 each locally and the bearings for the SRAM BB (MR3040H7-2RS) from Ali were near $20 for 4 - local shop would have to order them AND they were more $$ than Ali.

[mark335]

My local bike shop. Genuine SRAM DUB T47. Being said I had one of the bearings give out after 700 kms which is hardly better than a KACTUS one I bought for my other bike. My solution was to replace the bearings only - Going on 1000 km now.

FWIW the KACTUS one was near $50 and the SRAM one was $75 CDN

The bearings for the KACTUS BB were $10 each locally and the bearings for the SRAM BB (MR3040H7-2RS) from Ali were near $20 for 4 - local shop would have to order them AND they were more $$ than Ali.

Very quickly this bearing blew out, 700km is not much.
I'm intrigued by this topic because I also have a T47 86mm in my frame (bxt) and installed bb Token. I have the same thing, the first bearings lasted 2000km then started to squeak, the second Token bb 1000km and the same symptom. The strange thing is that they don't have a rolling problem, they just squeak. Now I ordered bb Kactus, which has a flange on the bearing - that is, there is no metal-to-metal contact between the bearing and the crank axle. I wonder if this will solve the problem and what the reason is:
- friction between the metal-to-metal contact
- misaligned bb t47
- poor quality bearings

[Daviddavieboy]

Very quickly this bearing blew out, 700km is not much. . .
- friction between the metal-to-metal contact
- misaligned bb t47
- poor quality bearings

Both of the BBs developed a creak/click at the same point in their revolution. Upon removal and cleaning I was able to wash out 'dirt ?'  that was found between the balls and race. On the KACTUS I assumed it was ceramic particles and even with no load and clean a definite rough spot could be felt in the rotation even when spinning unloaded. On the SRAM bearings the particles may have actually been dirt ingress but again when rotating the bearing unloaded a rough spot could be felt. To note, this was only on the non drive side of the SRAM BB. When installing the new bearings I SOMTHERED the seals with grease to help prevent anything getting past them. Both of the BBs I bought use plastic sleeves to protect the crank.

Fingers crossed, they both have been perfect - near 1000km on the SRAM and 500km on the KACTUS BB in my gravel bike. I assume my BB is aligned as the crank doesnt bind at all.

[Icyseanfitz]

I'm using this:

SENICX T47 68mm Ceramic Bottom Bracket Suitable for Shimano/SRAM GXP Road Bike Crank 24mm Shaft Gravel Bicycle Central Movement
https://a.aliexpress.com/_mPAkXeP

1100km on it, perfect still, I don't ride much in the rain though

[Daviddavieboy]

I'm using this:

SENICX T47 68mm Ceramic Bottom Bracket Suitable for Shimano/SRAM GXP Road Bike Crank 24mm Shaft Gravel Bicycle Central Movement
https://a.aliexpress.com/_mPAkXeP

1100km on it, perfect still, I don't ride much in the rain though

To be honest I think the problem is with cheap bearings in the DUB format. They are SO SMALL that they plainly do not last. Between this and me being extremely fussy about noises makes for a bad combination. If I had to choose over again I would NOT use cranks with DUB axle sizing - I have (Shimano/Campagnolo) bikes with literally 10,000 kms and more on the same BB.

[Serge_K]

To be honest I think the problem is with cheap bearings in the DUB format. They are SO SMALL that they plainly do not last. Between this and me being extremely fussy about noises makes for a bad combination. If I had to choose over again I would NOT use cranks with DUB axle sizing - I have (Shimano/Campagnolo) bikes with literally 10,000 kms and more on the same BB.

I'm lost. Are you saying that T47 + 29mm/DUB axle = small bearings?
Because i know that PF BB86 / BSA + 29mm axle = bad, but i thought pretty much the reason why T47 exists is to accommodate 29mm axles with adequate sized bearings?

[Daviddavieboy]

I'm lost. Are you saying that T47 + 29mm/DUB axle = small bearings?
Because i know that PF BB86 / BSA + 29mm axle = bad, but i thought pretty much the reason why T47 exists is to accommodate 29mm axles with adequate sized bearings?

Yes they are tiny. Have you never disassembled one ? TBH I am surprised that roller or cone bearings are not used as to give a larger contact area but that would be more expensive.

[bremerradkurier]

Yes they are tiny. Have you never disassembled one ? TBH I am surprised that roller or cone bearings are not used as to give a larger contact area but that would be more expensive.

They used to be a thing in the 1980s.

https://www.lucio-bici.com/shop/p/rare-nos-vintage-1980s-galli-super-criterium-titanium-italian-bottom-bracket