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Re: Velobuild VB-R-168 Frame
Quote from: hazzer19 on March 08, 2023, 05:30:59 PM

Nice! Looking forward to seeing the build and hearing how the direct hangers works out. Do you have a link for it? Nice work on the 3D covers.

I just ordered this one, labeled H784. The first one I ordered was the 906 which is the wrong one. The 906 is too small and the outer piece is flat. The 784 has a bigger outer piece with a conical shape to where it meshes with the frame. Some pictures below.

Edit: Also, it will change the thru axle needed from a 1.5 thread pitch to a 1.0. May be a deal breaker with the smaller threads. I'd rather have 1.5 but it's fine. I'd rather have the direct mount and have an axle ready.

https://www.aliexpress.us/item/3256803598543431.html?spm=a2g0o.order_detail.order_detail_item.4.6504f19cFOTG0h&gatewayAdapt=glo2usa&_randl_shipto=US



https://www.rearmechhanger.com/product/rear-gear-mech-derailleur-hanger-cc251/

Wrong outer piece (flat)


Stock outer piece (cone)
March 09, 2023, 04:51:18 AM 		1
Re: Velobuild VB-R-168 Frame *Warning, lots of pictures. If you guys want I can delete them all and link an imgur folder*

Had some "fun" today trying some things out in the name of science. I was curious whether you could use a Tarmac stem using the Allez conversion top cap. So I swung by my local shop and picked up a Tarmac/Allez compression ring for $25. Fired up the 3D printer and printed the top cap, which came out pretty nice.







This is where I started to run into problems. The top headset bearing included with the frame is ID 40mm, which is ever so slightly smaller than the Tarmac bearing, which is ID 40.5mm. You'd think that 0.5mm wouldn't make a difference, but it did. The main body of the compression ring woud snap into place, but the inner shim wouldn't fit because the compression ring was compressed.




As you can see, the slot was pinching, and the shim didn't have room to slot in. Almost just gave up, but I had a spare bearing, so I experimented...with the sander. Used a dremel and sanded the inner surface of the bearing to widen the ID. Got it to around 40.3mm before I ran out of sandpaper drums. But the good news was that it was just enough to get the compression ring and shim to fit. Woohoo!

On to the next problem. The Tarmac compression ring sits lower in the bearing, and I was running into the same issue as a lot of people here. The top cap was hitting the frame and couldn't preload the bearing.



Ended up not being a huge issue. I considered buying a thicker bearing (8mm probably would have worked), but I just made a quick change to the top cap design and reprinted. 5 hours later I had a new top cap the worked.



Routed the cables.


And mounted the stem.


And....new problems. As you can probably see, the spacers cause a tight bend in the white shift cable, enough so that I couldn't pass the cable. And after taking it off, you can see it kinked.





New plan. The Tarmac can use mechanical shifting, so I knew there was a way. In the end, I just drilled a hole for the shift cable.




Didn't look too bad, and a little better with the bat.




But the bat caused another kink in the shift cable so I left it off. A little piece of shrink wrap kept things tidy.




So, what did I learn? The Tarmac stem is possible and looks pretty good in my opinion. The Allez top cap will not work without either getting a thicker bearing or changing the design (I can post the STL of both if people want). The compression ring and bearing will have to be modified a little to get a bigger ID. Mechanical shifting will work but won't look as good as electronic.
March 11, 2023, 07:21:15 PM 		2
Re: Velobuild VB-R-168 Frame
Quote from: some guy on March 24, 2023, 02:40:29 PM
has anyone on here fitted a "the one pro" handlebar to their 168? is there a headset cover that fits the frame?

The One Pro fits perfectly. Just use everything that came with the bar, not the stuff that comes with the frame. So the handlebar comes with a compression wedge, top cap, and spacers; use those. They’re lighter as well.
March 30, 2023, 04:05:48 PM 		1
Re: Velobuild VB-R-168 Frame




Almost finished. Still deciding on bar tape. I have some black Supacaz and some blue Lizard Skins. The blue isn't the exact shade as the frame, and I'm not sure it would be too much blue.
April 02, 2023, 12:54:17 PM 		10
Re: Velobuild VB-R-168 Frame
Quote from: some guy on April 03, 2023, 08:14:45 AM
yeah, will go with the oem version of the one pro handlebars as well. did you by chance weigh the spacers that came with it?

The top transition piece (between stem and spacers) is 3.8g. The top cap is 9.3g. The compression plus is 10.8g. The 5mm spacer is 3.6h and the 10mm spacer is 7.2g.
April 03, 2023, 10:13:27 AM 		1
Re: Velobuild VB-R-168 Frame
Quote from: BerndSon on April 11, 2023, 05:18:36 PM
Finally found some minutes to elaborate on this topic!

in Short:
my saddle looked the same as for Siejak, - I was able to fix it by inserting three small sheets of a soda can metal foil  at the right side between Seatpost and Frame.  By doing so, the Saddle was perfectly aligned.

To those who are affected, - just loosen your seatpost clamp and try to rotate the saddle to the left and right. I was able to rotate it by approx. ± 5 degree. As soon as the clamping device is tensioned, the notch of the saddle rotates to the right and the gap between seatpost and frame looks like described in the prior post.

If someone is motivated to dig deeper: Maybe the root cause for the misalignment is not the huge clearance between seatpost and frame but the contact angle of clamping inlet to seatpost. (=clamping device forces the seatpost to rotate). If thats the case, modifying the clamping device would also solve the problem.

For the time being, i will continue with my fix since it simply worked.

The dust cap covers the shims perfectly, - they are invisible now and the saddle is perfectly aligned when clamped with 5-6Nm.

kind regards

The can fix worked for me so far. Hoping it doesn’t cause a slip and drop the seat post. Guess that’s the price we pay buying open mold.
April 14, 2023, 07:39:29 PM 		1
Re: Velobuild VB-R-168 Frame Ready to race! Got the bars wrapped and brakes bled. Took it out for a shakedown ride and everything feels great. I think I'd be hard pressed to tell much of a difference between this and the SL7, apart from weight making the SL7 slightly more snappy. I went 1x because this will be a crit bike and I didn't feel like dealing with routing another cable and a front mech. If I upgrade to electronic in the future I'd probably throw on a front mech but this was a budget build so I'm happy with the mech group I had laying around. Considering buying some decals for the wheels. I don;t like the new Zipp logo, think I'd go with the old logo in white. I love the look of white logos on wheels.

168 Frameset, size 58
Zipp 404 Firecrest wheels, Challenge Criterium RS tires 27mm, Muc Off valve stems, 160/140 discs
Shimano 105 mech grupo, 50t AbsoluteBlack chainring, 11-30t cassette
Kocevlo 1 piece bar/stem, 40cm/120mm, LizardSkins tape, Supacaz bar ends and stem cap
West Biking 3D printed saddle
ZTTO bottle cages
Look Pedals
Rapilock thru axles
Garmin 530, Garmin Varia
GoPro 8 on a custom 3D printed mount






Handlebars: https://www.aliexpress.us/item/3256804787569282.html?spm=a2g0o.order_list.order_list_main.17.79411802DclcYZ&gatewayAdapt=glo2usa&_randl_shipto=US
Saddle: https://www.aliexpress.us/item/3256804999444467.html?spm=a2g0o.order_list.order_list_main.10.79411802DclcYZ&gatewayAdapt=glo2usa&_randl_shipto=US
Bottle cages: https://www.aliexpress.us/item/2255800808341640.html?spm=a2g0o.order_list.order_list_main.184.4ba218023whaeR&gatewayAdapt=glo2usa&_randl_shipto=US
April 16, 2023, 05:37:14 PM 		6
Re: Velobuild VB-R-168 Frame
Quote from: curvenut on April 22, 2023, 08:42:02 AM
Which C ring is used here to avoid the rubbing ?
Someone had a link to the nline merchant ?

Thanks

If I remember right, people were just taking the standard headset spacer rings (thin circular shims I think like 0.5mm thick?) and just cutting them to match the C shape of the wedge piece.
April 23, 2023, 08:26:59 AM 		3
Re: Winspace T1550 new frame?
Quote from: patliean1 on May 15, 2023, 09:34:30 AM

The 168 is easily the worst of the bunch when pushed to the limits. But if crashing is a concern then get an Allez Sprint.


Interesting, I’m having a very different experience with the 168. Very little difference between it and my Tarmac SL7 apart from weight. And I’m no world tour sprinter but even pushing 1600W in a sprint it feels great. It’s my dedicated crit bike now over my SL7 for the crash replacement ability. And at less than half the price of an Allez Sprint, there’s no way I’d pick the Allez over it.
May 17, 2023, 07:02:06 AM 		6
Re: Velobuild VB-R-168 Frame
Quote from: curvenut on May 15, 2023, 11:15:07 AM
In the same boat here.  The C ring hold me to buy this frame !

Wondering  if VB change the c ring in the recent frame sold

If the C ring is the only thing holding you back, there are a few easy fixes to solve it. I bypassed it all together with a different compression ring that came with my handlebars (The One Pro). The Tarmac SL7 ring is another option at like $30USD.  Granted, I get that it’s super annoying to have to immediately replace a stock part to get the bike rolling, but that’s what I expect when you’re paying $700. I also immediately replaced the rear derailleur hanger because I think the stock one is unsafe but that’s just me.
May 17, 2023, 11:30:55 AM 		1