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Re: Help choosing frame: LightCarbon / XMCS / TanTan I was looking for frames myself and I tried making a list here:
https://docs.google.com/spreadsheets/d/1lEVHfNDi_b08PiRnSs6TRNVyK6llmW6w7Ve8tenMNXg/edit?usp=sharing
I still do not know which one to go for  :o
February 11, 2026, 11:48:59 PM 		1
Re: Velobuild VB-R-368 Aeroframe
Quote from: Joda55 on February 13, 2026, 09:33:35 PM
On another note, how is build quality on Velobuild frames today?

There's a review by Hambini where he roasts another Velobuild but that was 3 years ago. Can anyone say if their frames have improved since then?

Built two 368's and no complaints. Everything went together as it should, they are going strong and a pleasure to ride.
February 14, 2026, 01:43:24 AM 		1
Re: Velobuild VB-R-368 Aeroframe
Quote from: Joda55 on February 14, 2026, 09:21:14 PM
If anyone were to make an (un)educated guess, how aero do you think the VB-R-368 is?

Is it ignorant to hope it might be almost as aero as a Cervelo S5 just because there's so much carbon on it?
Maybe someone like @toxin that is really into bike design could tell. I would like to see any test even if it is cfd from Velobuild.
February 15, 2026, 01:23:04 AM 		1
Re: Help choosing frame: LightCarbon / XMCS / TanTan
Quote from: Joda55 on February 14, 2026, 09:32:01 PM
Btw,
Just wanted to ask if you have tried mounting 32c tires on your XMCS rims? And if so how much did they expand to?
And have you tried riding on better/packed gravel roads with those wheels? There are many such roads in my area and 30/32c is probably around the limit where it's not too uncomfortable or risk for flats is not too high.
I received the wheels only few weeks ago, road conditions and weather are terrible for road bike at least until the end of the month. I used to have 28/30c combo, which on 21/28 ext/int rim expands to 29-29,5 and 31 mm respectively, and after initial installation of 30c on 26/34 XMCS I decided to order 32c tire and use 30/32c combo instead. I expect 32c tire to bulb up to ~35-35,5 mm which is sufficient to cover the rim on the rear.

I used to have 38c slick tires on my gravel bike for commutes and tamed gravel and it was really good and fast on hardpack. I think the combo will work quite well in your conditions. Just don't hit potholes and roots and at 35 kmh :)
February 15, 2026, 08:13:09 AM 		1
Re: Velobuild VB-R-368 Aeroframe Nobody can really tell you which of these bikes will be faster from pictures, but you can look at some individual features and judge those. Really the VB doesn't make any disastrous mistakes. The fork crown and lower headtube are a bit odd. The head tube trailing edge is a bit narrow, so that might be a bit unstable at high yaw, the flat transition from top of bb to seat tube isn't the best, but with the mess that the airflow is in that area, it's probably irrelevant. The seat tube and post are a bit wide. The leading edge on the lower section of the fork is flat. The head tube is very narrow, so that's its biggest positive. Can't really say how fast it is when it's all put together.

The advantage big brands have is that they already have libraries of the optimised tube shapes and lots of time and money to spend on optimising every tiny detail (a real pain in the ass). Velobuild really can't afford to do that so they just throw deep tube shapes at the problem, but that's not really as good.

I'd lean towards the S5 simply because of the gap in resources and it tests well (though my suspicion is that the wind tunnel is more flattering to it than the real world), but I wouldn't expect the VB to be a parachute either.
February 15, 2026, 05:34:31 PM 		1
Re: Velobuild VB-R-368 Aeroframe
Quote from: Joda55 on February 15, 2026, 11:16:56 PM
Whoa thorough analysis, thank you.
Wouldn’t be surprised if the S5 is faster, just hoping the Velobuild is up there somewhere.
Maybe like an older gen Madone, if that is not too much to hope for? :D
I think the question we all have isnt if it is faster than s5 or newer full on aero bikes, instead what i ask myself is if it is faster than Gen6 Madone for example . Its also worth mentioning that i think the majority of gains will come from the "modern" geometry because it enables you to sustain more aero position and dont lose as much power.
February 16, 2026, 01:47:29 AM 		1
Re: Velobuild VB-R-368 Aeroframe Hey everyone,

my Aerotrace is now fully built. I think the bike looks great. I built it up with 82mm Elite wheels 30mm in the back an 28 front, a 54T chainring. Shimano 105 mechanical groupset, one-by-one. I hope 366 ftp and 84 kg are enough to make it fast :) Frame size 58. I don't think the seat clamp is the best design. The bearing quality isn't the best, but that's not a big deal. You have to consider the whole package, and for the total price of €1700 for the build, you can't complain. The bike is lighter than my Specialized Allez Sprint, and hopefully faster too ;)I will be riding with Favero Assioma dou pedals. If anyone has a really good, suitable holder for a Garmin and the Velobuild handlebars, please get in touch.
February 16, 2026, 03:40:49 AM 		1
Re: Velobuild VB-R-368 Aeroframe
Quote from: Joda55 on February 15, 2026, 11:16:56 PM
Whoa thorough analysis, thank you.
Wouldn’t be surprised if the S5 is faster, just hoping the Velobuild is up there somewhere.
Maybe like an older gen Madone, if that is not too much to hope for? :D

As I said, It won't be a parachute. If you equipped them with the same parts, at worst, you'd probably be looking at the VB a few watts slower. The biggest potential gain of this bike is that you can get your saddle very far forward, which can enable big aero gains in rider position.
February 16, 2026, 04:51:09 PM 		1
Re: Velobuild VB-R-368 Aeroframe I am really curious to see how the frame ends up when they add T1000 to the mix. Maybe they will decrease the weight a bit but it will also be interesting to see if the frame feels different from the current T800
February 17, 2026, 09:14:27 AM 		1
Re: Velobuild VB-R-368 Aeroframe
Quote from: Serge_K on February 17, 2026, 08:03:35 AM
I would not expect it to be comfortable, and the stack is very low. I would run the widest tyres the frame can take as a starting point, and I think the bike can be fast IF you fit on it. That's a huge if. The geometry is extremely aggressive and doesn't fit most.
The worst bike you can buy is a harsh frame that doesn't even fit you.
I say this as someone who bought harsh frames that didn't fit me ..

As pistonbroke already said and perhaps counterintuitively, it's not a harsh ride at all.  Subjectively, more dampening than the TCR I migrated from.  If anything my concern is that it's slow because it's dampening too much, but I need a lot more miles, preferably not in Winter and also some experimentation with tyre pressures, to confirm.

It's also very comfortable *for me* but you're quite right it may not fit most or even many.
February 17, 2026, 10:22:25 AM 		1