Author Topic: Velobuild AERO GRAV Frame  (Read 523040 times)

Motty89

Re: Velobuild AERO GRAV Frame
« Reply #360 on: September 18, 2025, 02:38:07 PM »
What's the biggest 1x chainring someone has used on here? I'm aware they recommend max of 44(?) But am thinking of using this as winter road and gravel bike so would like to have a larger chainring for threshold intervals on flat.

Yoei802

Re: Velobuild AERO GRAV Frame
« Reply #361 on: September 18, 2025, 02:41:18 PM »
I think I saw someone fit a 48t sram chainring on this

asagilmore

Re: Velobuild AERO GRAV Frame
« Reply #362 on: September 18, 2025, 06:47:50 PM »
What's the biggest 1x chainring someone has used on here? I'm aware they recommend max of 44(?) But am thinking of using this as winter road and gravel bike so would like to have a larger chainring for threshold intervals on flat.

46t fit fine for me, but only has a few mm of space so not sure about 48, maybe if you spaced it but the chainline would be bad.

sbixify

Re: Velobuild AERO GRAV Frame
« Reply #363 on: September 19, 2025, 01:13:38 AM »
What's the biggest 1x chainring someone has used on here? I'm aware they recommend max of 44(?) But am thinking of using this as winter road and gravel bike so would like to have a larger chainring for threshold intervals on flat.

I'm running 46t and have around 3-3,5 mm clearance. I plan on putting on a 48t next year, but I will probably need to add a small spacer for that.

awinner

Re: Velobuild AERO GRAV Frame
« Reply #364 on: September 19, 2025, 01:37:45 AM »
Anyone here know what length bolt they used for the front brake mounting? I am running SRAM Rival/Force flat mount brakes front and rear. I ordered 37mm for the rear but unsure on the fronts.

Im running SRAM Rival flat mount. 32mm for the rear and 15mm for the front is what was required. Dont forget you need the mounting plate for the front as well.

Yoei802

Re: Velobuild AERO GRAV Frame
« Reply #365 on: September 19, 2025, 10:57:50 AM »
Im running SRAM Rival flat mount. 32mm for the rear and 15mm for the front is what was required. Dont forget you need the mounting plate for the front as well.

Sweet, thanks for the confirmation!

leogeo

Re: Velobuild AERO GRAV Frame
« Reply #366 on: September 21, 2025, 05:14:39 AM »
My frame arrived a few weeks ago (Size S, glossy black, with both seatpost options, separate Bar + Stem Combination of velobuild) and i am about to start my first build.

But i am already clueless in the first steps into the build... So i want to install the fork, spacers and stem to measure where to cut the fork. But as everything keeps feeling very loose i am not sure what i am doing wrong.

From my understanding the steps should be like this:

- install upper and lower bearing
- install the crown-race on the fork to create the right angle that fits in the lower bearing
- put the fork through the steerer tube
- install the compression ring that holds the fork in place (as shown in the picture)
- then install the "cover" where the spacers fit onto

But if i do it in this order, the "cover" (what i am holding in the picture)  does not fit properly on to the compression ring and there is a gap between steerer tube and the cover. I'm wondering why this “cover” on the underside, which rests on the compression ring, has these small holes if there are no corresponding counterparts, i.e., “pins,” that fit into these holes. This makes me doubt whether I have understood the structure correctly at all.


Cape_Kirk

Re: Velobuild AERO GRAV Frame
« Reply #367 on: September 21, 2025, 05:40:12 AM »
I the case of my frame there was also a gap between the compression ring and cover. Luckily I had another c-ring (which was not that thick) and now the gap is acceptable.

In case you're from germany you can send me dm (no language barrier).

ricchirock

Re: Velobuild AERO GRAV Frame
« Reply #368 on: September 21, 2025, 12:03:46 PM »
My frame arrived a few weeks ago (Size S, glossy black, with both seatpost options, separate Bar + Stem Combination of velobuild) and i am about to start my first build.

But i am already clueless in the first steps into the build... So i want to install the fork, spacers and stem to measure where to cut the fork. But as everything keeps feeling very loose i am not sure what i am doing wrong.

From my understanding the steps should be like this:

- install upper and lower bearing
- install the crown-race on the fork to create the right angle that fits in the lower bearing
- put the fork through the steerer tube
- install the compression ring that holds the fork in place (as shown in the picture)
- then install the "cover" where the spacers fit onto

But if i do it in this order, the "cover" (what i am holding in the picture)  does not fit properly on to the compression ring and there is a gap between steerer tube and the cover. I'm wondering why this “cover” on the underside, which rests on the compression ring, has these small holes if there are no corresponding counterparts, i.e., “pins,” that fit into these holes. This makes me doubt whether I have understood the structure correctly at all.
On my case on first installation the bearings were not on their place and I had a big gap. I had to push them more than usual (just using my fingers) to make the gap normal.

ricchirock

Re: Velobuild AERO GRAV Frame
« Reply #369 on: September 21, 2025, 12:15:18 PM »
I finished my build .
The frame rides great, it’s stiff as a lot of people said. Stiff for road vibrations but stiff also under pedal strokes, at least for my level of torque  ;D
I just have a little issue with the Wheeltop RD.
It seems that is too close to the frame, hitting it when the chain is not on.
Hanger seems to be installed in the correct way.
To avoid that it hits the frame when chain is on I had to make the chain very short and to operate on the B screw to have more distance from RD and frame and cogs. Anyway the RD doesn’t work bad.
Attached few pics of the final build and of the details after the shakedown

darario

Re: Velobuild AERO GRAV Frame
« Reply #370 on: September 21, 2025, 12:55:17 PM »
Had the exact same issue with the gex RD touching the chainstay on my GR201 w/o chain mounted. Did solve it in the same way, 2 links less and b-screw adjustment.

Rico666

Re: Velobuild AERO GRAV Frame
« Reply #371 on: September 22, 2025, 06:12:16 AM »
Had the exact same issue with the gex RD touching the chainstay on my GR201 w/o chain mounted. Did solve it in the same way, 2 links less and b-screw adjustment.

I also run into that problem and I used the same fix.

Whiteman83

Re: Velobuild AERO GRAV Frame
« Reply #372 on: September 23, 2025, 09:04:35 AM »
How does your paint quality hold up over time? I have some visible scratches here and there after 700km  :-\ This may be due to the choice of a semi-matt paint finish, I think  :'(

majeranek

Re: Velobuild AERO GRAV Frame
« Reply #373 on: September 25, 2025, 02:21:35 AM »
Hi guys,

does anyone have a comparison between this frame and BXT-135. I'm planning to build new gravel soon and wondering if there's difference in quality between those two.
Velobuild frame looks a little bit better and can fit wider tyre. Price is similar so just wondering how it is in terms of quality.

ricchirock

Re: Velobuild AERO GRAV Frame
« Reply #374 on: September 25, 2025, 03:55:32 AM »
How does your paint quality hold up over time? I have some visible scratches here and there after 700km  :-\ This may be due to the choice of a semi-matt paint finish, I think  :'(
It seems that paint is very thin and delicate also on mine. Even if it's a glossy finish.
Anyway also on my previous black matt Giant Revolt it was the same.