Author Topic: Velobuild AERO GRAV Frame  (Read 522255 times)

jo1673

Re: Velobuild AERO GRAV Frame
« Reply #630 on: August 19, 2026, 06:36:22 AM »
Sorry, I don't know whether the Astr seat post would fit, but I would be surprised if it did.

pavlo.k

Re: Velobuild AERO GRAV Frame
« Reply #631 on: August 19, 2026, 03:19:40 PM »
I suppose that’s the appeal of this frame if you want to use it on the road—that extra stiffness provided by an aero seatpost. For trails, though, it’s definitely a drawback. By the way, do you know if any off-the-shelf seatpost would be compatible? For instance, a Ridley one, since the frame looks like a carbon copy of the Astr? Thanks.

Astr uses 27.2 round seatpost. Aero grav seatpost is unique to velobuild and it's shared between this frame and the 268

Ghandy

Re: Velobuild AERO GRAV Frame
« Reply #632 on: August 19, 2026, 11:55:30 PM »
Astr uses 27.2 round seatpost. Aero grav seatpost is unique to velobuild and it's shared between this frame and the 268

Astr RS uses D shaped seatpost.

BikerJens

Re: Velobuild AERO GRAV Frame
« Reply #633 on: August 25, 2026, 01:08:43 AM »
Hi yall,
so I had headset play for 1 year. Tryed little 0.25 mm C-shims  as suggested here and also tryed better and longer expander plug (DEDA) without any success. I decided to buy  a different Compression C-ring  on aliexpress(see picture). Now it works perfectly. I chose the 7.3 mm but maybe the 6.3 mm could have been ok too. Just dont use the C-ring provided with the frame. Chris from Velobuild discarded the issue saying the issue with previous frame was solved few years ago despite many people on this forum with similar issue. I can confirm the new C-ring provided by velobuild with this frameset is not really better. Too stiff maybe.

Anyhow, problem solved and can finally ride the bike!

I followed your advice - I'm now two rides deep since and it works so far.

First time I've had two rides and no play afterwards.

So thank you!
Tall person with gigantic CdA

kompasroos

RE: Velobuild AERO GRAV Frame
« Reply #634 on: August 26, 2026, 11:02:36 AM »
Hi all, I just ordered my frame and I’m kinda stuck between the 2x grx di2 groupset and ultegra di2. I’ll mostly be doing road riding ~70%, but I’d still like to fit big ol’ tires on my gravel wheels. Does anyone here have experience with FDR8150 and its tire clearance as well as a 34t inner chainring?

Thanks  :)

jo1673

Re: Velobuild AERO GRAV Frame
« Reply #635 on: August 27, 2026, 03:39:36 AM »
Does anyone happen to know the dimensions of the headset? Mine has started to feel a bit rough and needs replacement. Have managed to stear clear of the play, but only just, so will probably order that "other" C-ring and use that when I put things together again.

poeperman

Re: Velobuild AERO GRAV Frame
« Reply #636 on: August 28, 2026, 01:51:02 AM »
Recieved mine two weeks after ordering in Belgium.

Zero issues. Sanded down the brake points with 60 grit but don't know if it was necessary.

I wish I had read the instructional videos for SRAM Rival direct mount though. Don't just use common knowledge from normal derailleurs, you will fail :D

Still waiting for my custom decals to arrive, but I already feel sorry I chose icecrack white because it's more silvergrey than white. The paintjob is more than good enough though.

I fitted one microshim underneath the stem but I don't think i had to, there was no rub. Shortened the steerer tube for the testride, but will shorten a bit more later.

8.1kg without pedals, size L.
Rival 1x13
Kocvelo carbon saddle (prologo 143 design)
Integrated cockpit velobuild 400/90
Fake supacaz handlebar tape
Ali plastic bottle cages
Assioma Uno pedals
elitewheels Aero + 45/31 wheels with 50mm terra hardpacks. Measure 53mm and I have 4mm all around, so ample clearance.

« Last Edit: August 28, 2026, 01:56:37 AM by poeperman »

Theolean

Re: Velobuild AERO GRAV Frame
« Reply #637 on: August 29, 2026, 03:42:39 AM »
What kind of computer mount fits to the integrated handle bar? Is it a 2- or 3-bolt mount?

Unknownftp

Re: Velobuild AERO GRAV Frame
« Reply #638 on: August 29, 2026, 04:33:32 AM »
What kind of computer mount fits to the integrated handle bar? Is it a 2- or 3-bolt mount?

2 bolt like the kocelvo put front mount. It's kinda crap ngl

Theolean

Re: Velobuild AERO GRAV Frame
« Reply #639 on: August 29, 2026, 09:14:35 AM »
Do you mind to explain why? Up to now I have not used any integrated handlebar, so I have no experience.

Are 2-Bolt mounts in general crap or just this specific one?

Eisenhut

Re: Velobuild AERO GRAV Frame
« Reply #640 on: August 30, 2026, 10:32:32 AM »
I completed my friends build yesterday. Maybe a nice reference for you?

GRAV XS frame and GRAV XL frame.

Eisenhut

Re: Velobuild AERO GRAV Frame
« Reply #641 on: August 30, 2026, 10:33:19 AM »
Do you mind to explain why? Up to now I have not used any integrated handlebar, so I have no experience.

Are 2-Bolt mounts in general crap or just this specific one?

A thick aluminium works great. The thin carbon ones are very bouncy.

Unknownftp

Re: Velobuild AERO GRAV Frame
« Reply #642 on: August 30, 2026, 01:11:03 PM »
A thick aluminium works great. The thin carbon ones are very bouncy.

Exactly how I would put it. It bounces alot and idk if anyone else found this to be the case but mine seemed to have way to much positive angle to it. I bought some washers and long m5 bolts so I could tilt it down to where I wanted it.

poeperman

Re: Velobuild AERO GRAV Frame
« Reply #643 on: September 07, 2026, 04:14:42 AM »
i used this, as it is aluminium and can be tilted (otherwise it sits way too high).

Works flawlessly

https://nl.aliexpress.com/item/1005007425454545.html?spm=a2g0o.order_list.order_list_main.4.348879d2XIGmFF&gatewayAdapt=glo2nld

conradhughes

Re: Velobuild AERO GRAV Frame
« Reply #644 on: September 08, 2026, 02:36:36 AM »
So now that it's been a bit of time and Ridley have just come out with the Kanzo Fast 2.0... would love to see Velobuild (Chris if you're listening please!!!) update their aero gravel frame to take it to the next level.
I would simply copy that Ridley geometry the same as done with the ASTR RS, up the BB drop to 80mm, head angle the same, seat angle a degree steeper, 425mm chainstays and 57-58mm tire clearance. No storage compartment. Keep it simple.

The head tube can be deepened a little, use the shapes at the back of the Kanzo Fast 2.0 as reference to get the tire clearance up (my Velobuild has no paint on the inside of the chainstays any more, I'm sure a lot of you are the same with 50mm tires...).

The current frame itself is very fast with road wheels and tires on - with Chung testing it matched my Supersix Evo gen 4, which is a pretty fast bike. Velobuild know what they're doing! My bike has had a lot of interest here in Cape Town as it's a bit different, especially with the Bikedoc 34cm bars.