I checked the video, and it seems like the closure system holds the cover with magnatic force only, without any mechanical closing part.

I also somewhat worried about that is this cover can hold the position with water filled bidon...

I really hope it have some kind of mechanical lock system...

There is a clasp, in addition to the magnet. But the clasp is not well designed and doesn’t inspire a lot of confidence.  Like I said, it takes some fiddling and pushing and pressing to make sure the cover is closed securely.  I’ve also found that if you stuff the storage with too much stuff, to the point where the internal sock presses up against the cover, the closure gets more finicky.

This is something that Longteng can easily fix with a better closure system, and would be disappointing if they don’t TBH.

New defect found on my Long Teng. The downtube storage cover is on the locked position, i.e. the latch is pushed down flat. Still I'm able to pull out the cover easily while in locked position.

This is scary when you hit a bump the whole cover will fly off!

I like this bike so much especially the ride and geometry. Just disappointed with this defective design.

See video

Mine is also tricky to close. I have to make sure it's aligned, then I push down at the top and bottom, and double check that it's locked. For me, once it's properly in locked position, it doesn't come loose. I went for several rides with a sock of tubes/tools in the storage area, with full bottles, and had no issues.

Is there any zero offset seatpost on AliExpress that would fit for this frame?

Before I ordered, I asked Longteng if they have a non-offset post but they said they didn't. Since this is a proprietary seat post, I doubt there are third party versions, but it doesn't hurt to ask

Here it is, at last!

I picked up the bike last night from the LBS and spoke to the mechanic who built it up.  His take:

- Overall, it was easy to build

- No major issues, nothing was mis-aligned, BB fit was perfect

- Frame quality seems to be good with clean internals

- It didn’t feel all that different from building up major brand bikes

A few other notes:

- The bike was built with Ultegra 8170 Di2 groupset, Elitewheels Edge Ultralight 45s, Kocevlo integrated bars, GP5000 tires, RideNow TPU tubes

- Measured weight: 7.4 kg without pedals (7.65 kg with pedals) – I didn’t go full weight weenie, so there’s probably still room to take that down, but it’s not a priority for me

- I put on 32s and you can see from the pics that there’s plenty of tire clearance, probably room for more than the stated max clearance of 38

- The downtube internal storage is a bit finicky to close – there’s not a solid click to close, and I need to be careful to get everything aligned to close it, otherwise it comes off pretty easily.  Once it’s closed correctly, it feels solid. I’ll have to take it for a few rides to see if it’s problematic

- This is one of those frames with a soft top tube where you can press it down with your thumb – the mechanic said that it’s no different from some of the other lightweight frames that he has built, but you shouldn’t sit on the top tube at the stop light or tryna look cool

- The mechanic pointed out that there is a bit of play in the rear wheel – if you push on the wheel from the side, you can feel a bit of looseness; he tightened up everything but it’s still there, he said it’s probably something internal to the hub, it shouldn’t impact the ride, but I’m going to follow up with Elitewheels on this

- I took it for a short spin last night to bed the brakes and there was no seat tube slippage, although it was only a 30 minute spin over smooth surfaces. (I did end up with a flat…  I’m not very heavy and rarely flat, I think I’ve flatted maybe 3 times over 15 years, so I guess it’s Mazel Tov!)

The weather here has been crap (typhoon just came through, another incoming), so I may not be able to ride much on the new steed. Once I do, I’ll come back with some initial ride impressions (and au naturel pics).

Cheers.

So do we have any build or review of this frame?

Fingers crossed, I should be picking up the bike from my LBS in the the next 36 hours. I plan to have a chat w the mechanic who built it and get his take on frame quality, any issues he encountered, etc. 

I hope I didn't just jinx meself with that...

I wonder how much such a certification costs. Given that carbon layup know how and the entire industry is basically in Xiamen now, where any western manufacturer is a very niche, very fringe player, i really think the relevance of a UCI certification is eroding. I can see that an OEM frame would need to be UCI compliant in its measurements (the one aspect of UCI that keeps bikes looking like bikes, unlike triathlon bikes that tend to look like design student wet dreams), but UCI certified...
If i were racing and paying for my frame, or if my team were small, i'd absolutely consider slapping a UCI logo on it if it saves me signficant money, or allows me to buy better / more modern kit for a given budget.
I think enough people on this forum are riding enough bikes hard enough to know that an OEM frame can be raced on. It assumes common sense and caution, like not buying uber light fakes that apparently do break under load, but OEM has nothing to do with fakes.
In fact, if UCI stickers are preventing even one team from being created, or forcing it to shut down, i think it's bad. The world's moved on, and i know enough about the murky world of certifications to be suspicious of it anyway.

Btw, Paul Milder's book "what's wrong with china" talks about certifications in china. Nice book. Poorly made in china, same author, also a nice book.

The UCI itself is corrupt and has never been about the best interest of the sport, from looking the other way during the EPO era to the most recent debacle around Muriel Furrer's tragic death at the UCI World Championships (where she lay for over an hour in the forest after she crashed before they found her, because the UCI couldn't be bothered to give GPS units to U23 women).

I have no doubt this certification process is more about UCI getting some additional revenue and protecting the interests of big brands.

https://www.allstarobm.com/scott-road-disc-frameset-addict-rc-pro-disk-bicycle-bike-frame-p4646676.html

hello boss,

please buy chinese aethos. beautiful bicycle ride to coffee shop many friends asking, wow so nice but why no cable and where buy? you tell them spare-sir-rice make this for you only! they go WOW! now you local legend!

WTF you forgot to add some Fu Manchu and slant eye references  .I get that you’re trying to make fun of an obvious scam but stay classy eh?

Another small detail is that the seat post saddle clamp is made for round saddle rails and there is no adapter for oval saddle rails.  I’ve never had a problem with fitting oval carbon fiber rails on standard saddle clamps but just fyi.