Quote from: Serge_K on August 16, 2026, 09:54:13 AM
A carbon frame should last well north of 50,000km. If it fails after what many ride in less than one season, it's not fit for purpose.
Someone else had that problem recently, I suggested super glue. They probably use the worst imaginable epoxy to bond the sleeve in an effort to save 3 cents per frame. I would feel great thinking that the people who built my frame tried to shave every cent they could, off a design they stole.

Oh I agree with you a 100%.  By "should be expected" I meant more I probably should have spent a bit more on a brand with a better reputation and actually designing their own frames. 

As far as epoxy or self repair I definitely wouldn't trust myself to get the sleeves aligned properly so the bearings would seat parallel, much less do it in a way that would hold up long term.  And I would always worry about something else breaking anyway.  Would hate to think what would happen if it was the threads for one of the thru axles that came loose instead. 

No reply from Tan Tan as of yet so think I'll be a one and done customer of theirs at this point.

Hey All,

Update on my super old reply number 824 in this thread (May 4, 2025 on page 55).  Bike has been great up until last week.  Nearly 6000 miles over 14 months or so.  Bottom bracket sleeve on drive side has come loose and is rocking in the frame.  Still waiting on reply from TanTan customer service to see what they'll do, but if they offer a $150 replacement as they have for others I will probably decline.  Bike has been fine and not sure for the price this isn't to be expected, but personally hate the feeling of waiting for something to go wrong and will probably go with a brand with better reputation in the future unless they go above previous support they have offered others.  Thought those still considering a purchase would like the information!

Hey All,

Another complete build post with some first thoughts for anyone still waiting on their frame or thinking about buying.

About the build, went with the matte black because it was the lightest and only way I was going to beat the start of the tariffs here in the USA. Frame in a 56 was 850g with hangers and bottle cage bolts, fork was 330g uncut. Ultegra 8100 groupset, Roval CL II, Selle San Marco Shortfit CFX, Time Xpro 10, bike with pedals and cages is 16.1 lbs. From order to delivery was about 2.5 weeks.

About me, 170 lbs, former Cat 2 road/Cat 1 CX, now just ride for fun and occasionally hop into a weeknight crit. Threshhold around 300w and sprint around 1300w, so at least around here in Colorado decidedly average.

About safety, I had around 75 miles so far in my first week after building up and the vibes were good, and then the broken fork post really shook me. Had plans for a fast group ride today, but didn't want any incident to potentially hurt other people so bailed on that plan. Decided I'd go out for my own and try to basically ride like an idiot so if it was gonna break I would at least be prepared for it. Gradually built up to higher and higher speed and hit the brakes hard, with the fastest being around 45 mph. Did some bunny hops, fast corners, potholes, downhill speed bumps, and a dirt road with some rough washboard. Held together well and shows no outward signs of deformation, coin test sounds the same as before I left, and pressing in various sections can discern no flex. I won't pretend that this means mine or anyone else's are perfect but it makes me feel a lot better at least. Probably will avoid any big groups until I hit at least 1000 miles in a couple months and much more confident it's sturdy.

Finally, how does it ride? Honestly much better than expected. Last couple team bikes I had were a Sage Skyline and Donnelly C/C for cross. Comfort is on par with the Sage, but feels a lot more planted than that bike, although to be fair it had a max clearance for 25s. Stiffness wise it beats both of those, and that was a pleasant surprise because at this price and weight I was worried it would end up being a noodle.

So far fairly optimistic about how it's performed in the first 150 or so miles, but hesitant to recommend to anyone else with the safety concerns as they are. Will be consistently checking back here for Tan Tan's response on the fork, and will update as well when I get closer to 1000 miles. Anyone in the Denver area want to see one or ride it in person hit me up!