i am assembling this frame as well, I had an issue with the top headset bearing that has a too tight fit with the frame. It is possible to install it, but it is very hard to remove, even with pleny of grease applied to the bearing outer surface. I've measured the bearings and they are 52mm outer diameter. I'm going to try it with a 51.8mm outer diameter bearing. Longteng shouldbe more precise on this kind of details, they are providing an headset that is not the best fit for the frame.

Quote from: Sakizashi on August 28, 2026, 10:21:26 AM
They use a UDH, so any UDH can be used as a replacement.

sure, but it seems to me that the hanger is not fitting the frame. It's kind of cumbersome

just got my frame, with custom painting. I am trying to figure out what kind of design they used for the rear derailleur hanger. It seems a sort of unfitting, to me..

Quote from: rosteven on August 02, 2026, 02:56:27 PM
Also for any Newcomers, it is important to remember that this is "His Opinion" and that there mostly positive opinons of TanTan/Seraph frames on this forum.  It should go without saying that you (the perspective buyer) should do your own research before buying any product.

I am riding a tantan frame since 2019. It's still there, I've done races and granfondo with it. Nevertheless, I had to fix plenty of minor issues, with no customer care because, if something goes wrong, tantan simply block you like a disappointed teenager. The forum is full of this kind of experiences.

i repeat what i've already wrote in another post, just to be sure that newcomers will save their money: do not buy tantan or seraph, unless the frame costs less than 200$ (in that case, it could be worth to flip the coin and try one of their frames)

it's been amost 10 years since my last TanTan frame build, but I see that they have not changed. The recommendation is the same as 10 years ago: do not buy from them.

Quote from: Re:Entry on June 20, 2026, 06:12:30 AM

I got in touch with Alisa.

did you have any update from them?

i was looking at this frame and found out that spcycle has a T1000 version of the frame. However, the weight seems the same as the cheaper version. Have anyone asked the seller about this?

I came across this frame, but I never headr anything about this manufacturer: https://it.aliexpress.com/item/1005010226246500.html?gatewayAdapt=deu2ita

Is it similar to some well-known model? I think I never saw something like this

Quote from: Gloopann on May 27, 2026, 09:55:13 AM
I paid €360 for my eR7 full groupset.

now I can only find levers + front derailleur + rear derailleur for 580€, more or less

after 10 years, my sram red etap left me. The rear derailleur seems died and I've discovered that plenty of sram red etap electronic derailleurs have died over time. I am considering ltwoo er9 and wheel top eds to replace it, but I am wondering about the reliability of these groupsets. Considering also the counting failures that I'm reading here, would you recommend such groupsets? I am also tempted to go back to mechanical shifting...

I've always wanted to try an aero frame, why not this Tideacebike

Quote from: Serge_K on September 17, 2024, 10:12:17 AM
That's 100% what LTWOO did with me. After literally months of slow back and forth, where every time the goal post kept changing, i gave up. in the middle there was my reseller being ghosted by ltwoo and having to contact someone else at ltwoo. they essentially do their best to be unhelpful.

and be careful because paypal is not helping anymore on this. Latest experience with paypal have been very bad, a waste of money. Probably aliexpress is more safe now.

enter

i also have a wheelset with that hub, and I actually have a problem of little play of the rear wheel. I asked CSC and, after months of requests of support, they just sent me a new rear hub. I did not installed the new rear hub yet.