Author Topic: VeloBuild VB-TT-023  (Read 340579 times)

MALIBA

Re: VeloBuild VB-TT-023
« Reply #285 on: November 03, 2025, 11:49:57 AM »
Maybe a noob question, but it's the 1st time i want to build a bike.
About the BB, i saw it's a T47 -> this is ok

But about the crankset, are they all compatible ? at the moment the BB have the right diameter
When all compatible i mean shimano, rotor, sram etc

thanks

Hi, for the Velobuild TT frame, you need to install a T47 bottom bracket without cups, because the shell there is already wide.

Then, just buy the one with the correct internal diameter for the crankset you’ll be using:

Shimano: 24 mm

SRAM AXS: 29 mm

etc.

Willos

Re: VeloBuild VB-TT-023
« Reply #286 on: November 04, 2025, 02:55:45 AM »
I started to assemble my frame. There is some kind of wobble at the front. Did I do something wrong? No amount of pulling on the tube makes the play disappear.

Thanks in advance.

kuentzeldsc

Re: VeloBuild VB-TT-023
« Reply #287 on: November 04, 2025, 04:05:06 AM »
I started to assemble my frame. There is some kind of wobble at the front. Did I do something wrong? No amount of pulling on the tube makes the play disappear.

Thanks in advance.

Have you installed this part? You put it over the fork and it is for the brake pipes.

Willos

Re: VeloBuild VB-TT-023
« Reply #288 on: November 04, 2025, 04:07:12 AM »
Have you installed this part? You put it over the fork and it is for the brake pipes.

Yes I did,

I put the this part above the top bearing.

kuentzeldsc

Re: VeloBuild VB-TT-023
« Reply #289 on: November 04, 2025, 04:08:18 AM »
People in this thread using Riderever triva, what brake fluid are we supposed to use with it? And what fitting if I want to resize the brake hoses?

Thanks

You can also use the shimano pin and olive. But you have to deinstall the pin in the Riderever triva.

kuentzeldsc

Re: VeloBuild VB-TT-023
« Reply #290 on: November 04, 2025, 04:11:54 AM »
Yes I did,

I put the this part above the top bearing.

Maybe you haven't set the headset right? It seems it is too loose.

Willos

Re: VeloBuild VB-TT-023
« Reply #291 on: November 04, 2025, 04:25:33 AM »
Maybe you haven't set the headset right? It seems it is too loose.

I think my issue is that I am not able to tighten the headset to the part you asked me to check that I installed it.

kevinmx1

Re: VeloBuild VB-TT-023
« Reply #292 on: November 04, 2025, 05:05:44 AM »
Hi, for the Velobuild TT frame, you need to install a T47 bottom bracket without cups, because the shell there is already wide.

Then, just buy the one with the correct internal diameter for the crankset you’ll be using:

Shimano: 24 mm

SRAM AXS: 29 mm

etc.

That was precisely what i needed  ;D ;D ;D

thanks a lot

MALIBA

Re: VeloBuild VB-TT-023
« Reply #293 on: November 04, 2025, 05:13:02 AM »
I started to assemble my frame. There is some kind of wobble at the front. Did I do something wrong? No amount of pulling on the tube makes the play disappear.

Thanks in advance.

Did you cut the steerer tube to the correct height? I’m asking because the Velobuild stem is quite unusual, and the cut usually needs to be made slightly lower than normal.

Otherwise, when you tighten the top cap, it will touch the compression plug and won’t be able to remove the play in the system.

Check if that might be the issue.

Normally, the cut should be made at the height of the upper bolt of the stem, but since this stem is angled, if you cut it there, you won’t be able to tighten the system properly and remove the play.

Willos

Re: VeloBuild VB-TT-023
« Reply #294 on: November 04, 2025, 06:34:59 AM »
Did you cut the steerer tube to the correct height? I’m asking because the Velobuild stem is quite unusual, and the cut usually needs to be made slightly lower than normal.

Otherwise, when you tighten the top cap, it will touch the compression plug and won’t be able to remove the play in the system.

Check if that might be the issue.

Normally, the cut should be made at the height of the upper bolt of the stem, but since this stem is angled, if you cut it there, you won’t be able to tighten the system properly and remove the play.

Height seems to be low enough,

Just to be sure, the top cap that comes with the compression plug should no be used correct? We need to use the one that is on the upper part of the stem?

Thanks

Willos

Re: VeloBuild VB-TT-023
« Reply #295 on: November 04, 2025, 11:09:28 AM »
It turns out I didn't tighten the compression tube enough and it slid freely in the tube so in the end I was just tightening the compression tube against the top cap.

Re: VeloBuild VB-TT-023
« Reply #296 on: November 08, 2025, 02:18:51 PM »
I read this whole thread as I was deciding on my new TT bike last winter, and it convinced me to order. My previous TT bike was a used 2011 Garneau Gennix T1 Large, and I was looking to be more comfortable for my first full Ironman in Ottawa this past summer - more adjustability in the front end and bigger tire clearance. I am 5’8” (173cm), 155-160lb (70-72kg), and went with a large frame for more reach/stack since that fits me best. I did get a bike fit on the Garneau, (and the Velobuild once it arrived), and the fitter agreed that a large frame is right for me.
The order process was great, got them to add the 2 bolt holes on the top tube for a bento box (though I have not used them yet). Went for a black/white paint scheme and added my name in the paint at the seatpost. This was the 2nd frame I’d built from scratch (first one was a custom drop bar titanium mountain bike from Waltly Ti), but I’ve been doing my own maintenance on my bikes for a while. The build was very straightforward, with the usual difficulties of fully internal cable routing. I did crack the stem as I was tightening to the recommended torque (5Nm), and Chris from Velobuild sent out a new one – though I don’t trust it anymore, so I’m looking for other options now that I’m done racing for the year.

Parts List:
Frame: Velobuild TT-023 Large
TT Bars: Included with frame, but I added a custom 3D printed extension off the back that replaces the (too) soft yellow foam over the screws and makes a closed back for the elbow. Also adds a bit more length to the extensions which I found I needed. Custom 3D printed SRAM wireless blip holders. Textured heat-shrink for the grips, as I’ve seen in a few posts in this thread
Stack Angle: Custom machined aluminum block for additional 9 degree angle
Base Plate/Bridge: Custom machined aluminum bridge for a bit more reach and a BTA bottle mount
Arm pads: CeeGees 10mm TriRig Scoops Ultimate SL for full padding along the forearms
Garmin Mount: Custom 3D Printed mount that fits just between the bars at the front. Very large platform zip-tied to the bars, covering most of the area between them.
Brakes: RideRever Triva
Rotors: Shimano Ultegra
Shifters: SRAM Wireless Blips
Bottom Bracket: Token Steel Bearing T47 Threaded BB 47mm for 24mm cranks
Crankset: 160mm XCadey 24mm spindle
Power Meter Spider: XCadey XPower-S Gen 2 110BCD-4S
Pedals: Shimano 105
Chainring: 1x 54T Pass Quest
Chain: SRAM Force with Silca wax
Cassette: SRAM Apex XPLR 12 speed 11-44T
Derailleur: SRAM Force D2 12 speed XPLR
Wheelset: Yoeleo SAT C88 DB PRO NxT SL2
Tires: Continental Aero 111 29mm on front, and GP5000 30mm on rear
Disc Cover: ABS Sheet with electrical tape and zip ties
Aero Bottle: Canyon 650mL Fuel bottle, Fidlock magnetic mount
Toolbox: Custom 3D Printed box fitting the aero bottle and the frame. Inside I fit my pump, tupe, plugs, extra tubeless valve parts, multi-tool, hex keys, tire levers. Take the top cover off, and pull out an insert with slots for all the individual tools.
Saddle: Ergon SR Tri Front (not settled on this yet, might tri that ONIRII 3D printed TT saddle)
BTS Bottle Holder: For me, the 2nd seatpost bottle mount hole is hidden inside the frame, so I spent some time to come up with a much better solution. Custom design – yes, it fits within the 30x30cm box rule, but it is a little heavy (~700g, but I’m working on improving that). 2x1L Bottles face forwards so there is much less risk of ejecting. They are also quicker to remove since you don’t need elastics on them to keep them in, and they are much easier to reach. I haven’t done aero testing, but it definitely looks fast – the goal was to have then follow the curve of my back. The pictures don’t show it, but the bottle also angle outwards for easier access since you reach around the side of your body, not directly over your back (and maybe helps with aero as well)

Ride Review:
I haven’t seen anyone else put an XLPR groupset on a 1x TT bike – this forum seems to be the place for unconventional builds though - I think it works great! I am not too picky about cadence, generally average about 95rpm in races. This bike is quick, it just wants to go fast (2nd fastest bike split at IM Ottawa this year). Liquid nutrition for my races, carrying up to 3.65L on the bike and grabbing water from aid stations (possibly more with a different front hydration setup). Much more comfortable than my previous TT bike as well, but there are many factors that go into that (tires, fit, saddle, etc.). On windy days, the deep front wheel gets blown around a bit, but that’s entirely expected.
The headset bearings seem to have rusted after my IM – sitting in T2 all day with sticky carb drink maybe did it. I’ll be replacing with higher quality stainless steel bearings when I replace the stem.

If anyone is interested in the custom parts I’ve made, let me know – I’ve seen a few people in other posts asking about angled spacers (I have been considering starting an online store)! I’m happy to share the files for the 3D printed parts, but they are in constant revision, so I’d have to lock down a design.

teichs42

Re: VeloBuild VB-TT-023
« Reply #297 on: November 09, 2025, 09:51:42 AM »
I read this whole thread as I was deciding on my new TT bike last winter, and it convinced me to order. My previous TT bike was a used 2011 Garneau Gennix T1 Large, and I was looking to be more comfortable for my first full Ironman in Ottawa this past summer - more adjustability in the front end and bigger tire clearance. I am 5’8” (173cm), 155-160lb (70-72kg), and went with a large frame for more reach/stack since that fits me best. I did get a bike fit on the Garneau, (and the Velobuild once it arrived), and the fitter agreed that a large frame is right for me.
The order process was great, got them to add the 2 bolt holes on the top tube for a bento box (though I have not used them yet). Went for a black/white paint scheme and added my name in the paint at the seatpost. This was the 2nd frame I’d built from scratch (first one was a custom drop bar titanium mountain bike from Waltly Ti), but I’ve been doing my own maintenance on my bikes for a while. The build was very straightforward, with the usual difficulties of fully internal cable routing. I did crack the stem as I was tightening to the recommended torque (5Nm), and Chris from Velobuild sent out a new one – though I don’t trust it anymore, so I’m looking for other options now that I’m done racing for the year.

Parts List:
Frame: Velobuild TT-023 Large
TT Bars: Included with frame, but I added a custom 3D printed extension off the back that replaces the (too) soft yellow foam over the screws and makes a closed back for the elbow. Also adds a bit more length to the extensions which I found I needed. Custom 3D printed SRAM wireless blip holders. Textured heat-shrink for the grips, as I’ve seen in a few posts in this thread
Stack Angle: Custom machined aluminum block for additional 9 degree angle
Base Plate/Bridge: Custom machined aluminum bridge for a bit more reach and a BTA bottle mount
Arm pads: CeeGees 10mm TriRig Scoops Ultimate SL for full padding along the forearms
Garmin Mount: Custom 3D Printed mount that fits just between the bars at the front. Very large platform zip-tied to the bars, covering most of the area between them.
Brakes: RideRever Triva
Rotors: Shimano Ultegra
Shifters: SRAM Wireless Blips
Bottom Bracket: Token Steel Bearing T47 Threaded BB 47mm for 24mm cranks
Crankset: 160mm XCadey 24mm spindle
Power Meter Spider: XCadey XPower-S Gen 2 110BCD-4S
Pedals: Shimano 105
Chainring: 1x 54T Pass Quest
Chain: SRAM Force with Silca wax
Cassette: SRAM Apex XPLR 12 speed 11-44T
Derailleur: SRAM Force D2 12 speed XPLR
Wheelset: Yoeleo SAT C88 DB PRO NxT SL2
Tires: Continental Aero 111 29mm on front, and GP5000 30mm on rear
Disc Cover: ABS Sheet with electrical tape and zip ties
Aero Bottle: Canyon 650mL Fuel bottle, Fidlock magnetic mount
Toolbox: Custom 3D Printed box fitting the aero bottle and the frame. Inside I fit my pump, tupe, plugs, extra tubeless valve parts, multi-tool, hex keys, tire levers. Take the top cover off, and pull out an insert with slots for all the individual tools.
Saddle: Ergon SR Tri Front (not settled on this yet, might tri that ONIRII 3D printed TT saddle)
BTS Bottle Holder: For me, the 2nd seatpost bottle mount hole is hidden inside the frame, so I spent some time to come up with a much better solution. Custom design – yes, it fits within the 30x30cm box rule, but it is a little heavy (~700g, but I’m working on improving that). 2x1L Bottles face forwards so there is much less risk of ejecting. They are also quicker to remove since you don’t need elastics on them to keep them in, and they are much easier to reach. I haven’t done aero testing, but it definitely looks fast – the goal was to have then follow the curve of my back. The pictures don’t show it, but the bottle also angle outwards for easier access since you reach around the side of your body, not directly over your back (and maybe helps with aero as well)

Ride Review:
I haven’t seen anyone else put an XLPR groupset on a 1x TT bike – this forum seems to be the place for unconventional builds though - I think it works great! I am not too picky about cadence, generally average about 95rpm in races. This bike is quick, it just wants to go fast (2nd fastest bike split at IM Ottawa this year). Liquid nutrition for my races, carrying up to 3.65L on the bike and grabbing water from aid stations (possibly more with a different front hydration setup). Much more comfortable than my previous TT bike as well, but there are many factors that go into that (tires, fit, saddle, etc.). On windy days, the deep front wheel gets blown around a bit, but that’s entirely expected.
The headset bearings seem to have rusted after my IM – sitting in T2 all day with sticky carb drink maybe did it. I’ll be replacing with higher quality stainless steel bearings when I replace the stem.

If anyone is interested in the custom parts I’ve made, let me know – I’ve seen a few people in other posts asking about angled spacers (I have been considering starting an online store)! I’m happy to share the files for the 3D printed parts, but they are in constant revision, so I’d have to lock down a design.

Great build! But you gotta give us more than these pictures! Let’s see the front end more. Maybe more pics of the tool box? Show the angle of those rear bottles?

Your sizing also has me confused. I was quite sure I would go with a medium but I’m a touch taller than you. What’s your inseam?

Santiago

Re: VeloBuild VB-TT-023
« Reply #298 on: November 09, 2025, 10:49:54 AM »
I read this whole thread as I was deciding on my new TT bike last winter, and it convinced me to order. My previous TT bike was a used 2011 Garneau Gennix T1 Large, and I was looking to be more comfortable for my first full Ironman in Ottawa this past summer - more adjustability in the front end and bigger tire clearance. I am 5’8” (173cm), 155-160lb (70-72kg), and went with a large frame for more reach/stack since that fits me best. I did get a bike fit on the Garneau, (and the Velobuild once it arrived), and the fitter agreed that a large frame is right for me.
The order process was great, got them to add the 2 bolt holes on the top tube for a bento box (though I have not used them yet). Went for a black/white paint scheme and added my name in the paint at the seatpost. This was the 2nd frame I’d built from scratch (first one was a custom drop bar titanium mountain bike from Waltly Ti), but I’ve been doing my own maintenance on my bikes for a while. The build was very straightforward, with the usual difficulties of fully internal cable routing. I did crack the stem as I was tightening to the recommended torque (5Nm), and Chris from Velobuild sent out a new one – though I don’t trust it anymore, so I’m looking for other options now that I’m done racing for the year.

Parts List:
Frame: Velobuild TT-023 Large
TT Bars: Included with frame, but I added a custom 3D printed extension off the back that replaces the (too) soft yellow foam over the screws and makes a closed back for the elbow. Also adds a bit more length to the extensions which I found I needed. Custom 3D printed SRAM wireless blip holders. Textured heat-shrink for the grips, as I’ve seen in a few posts in this thread
Stack Angle: Custom machined aluminum block for additional 9 degree angle
Base Plate/Bridge: Custom machined aluminum bridge for a bit more reach and a BTA bottle mount
Arm pads: CeeGees 10mm TriRig Scoops Ultimate SL for full padding along the forearms
Garmin Mount: Custom 3D Printed mount that fits just between the bars at the front. Very large platform zip-tied to the bars, covering most of the area between them.
Brakes: RideRever Triva
Rotors: Shimano Ultegra
Shifters: SRAM Wireless Blips
Bottom Bracket: Token Steel Bearing T47 Threaded BB 47mm for 24mm cranks
Crankset: 160mm XCadey 24mm spindle
Power Meter Spider: XCadey XPower-S Gen 2 110BCD-4S
Pedals: Shimano 105
Chainring: 1x 54T Pass Quest
Chain: SRAM Force with Silca wax
Cassette: SRAM Apex XPLR 12 speed 11-44T
Derailleur: SRAM Force D2 12 speed XPLR
Wheelset: Yoeleo SAT C88 DB PRO NxT SL2
Tires: Continental Aero 111 29mm on front, and GP5000 30mm on rear
Disc Cover: ABS Sheet with electrical tape and zip ties
Aero Bottle: Canyon 650mL Fuel bottle, Fidlock magnetic mount
Toolbox: Custom 3D Printed box fitting the aero bottle and the frame. Inside I fit my pump, tupe, plugs, extra tubeless valve parts, multi-tool, hex keys, tire levers. Take the top cover off, and pull out an insert with slots for all the individual tools.
Saddle: Ergon SR Tri Front (not settled on this yet, might tri that ONIRII 3D printed TT saddle)
BTS Bottle Holder: For me, the 2nd seatpost bottle mount hole is hidden inside the frame, so I spent some time to come up with a much better solution. Custom design – yes, it fits within the 30x30cm box rule, but it is a little heavy (~700g, but I’m working on improving that). 2x1L Bottles face forwards so there is much less risk of ejecting. They are also quicker to remove since you don’t need elastics on them to keep them in, and they are much easier to reach. I haven’t done aero testing, but it definitely looks fast – the goal was to have then follow the curve of my back. The pictures don’t show it, but the bottle also angle outwards for easier access since you reach around the side of your body, not directly over your back (and maybe helps with aero as well)

Ride Review:
I haven’t seen anyone else put an XLPR groupset on a 1x TT bike – this forum seems to be the place for unconventional builds though - I think it works great! I am not too picky about cadence, generally average about 95rpm in races. This bike is quick, it just wants to go fast (2nd fastest bike split at IM Ottawa this year). Liquid nutrition for my races, carrying up to 3.65L on the bike and grabbing water from aid stations (possibly more with a different front hydration setup). Much more comfortable than my previous TT bike as well, but there are many factors that go into that (tires, fit, saddle, etc.). On windy days, the deep front wheel gets blown around a bit, but that’s entirely expected.
The headset bearings seem to have rusted after my IM – sitting in T2 all day with sticky carb drink maybe did it. I’ll be replacing with higher quality stainless steel bearings when I replace the stem.

If anyone is interested in the custom parts I’ve made, let me know – I’ve seen a few people in other posts asking about angled spacers (I have been considering starting an online store)! I’m happy to share the files for the 3D printed parts, but they are in constant revision, so I’d have to lock down a design.

Your build sounds great, but I have to agree with teiches42, we need to see more pictures from other angles!

Also, if you could share your file for the stack angle block and the base plate that would be great. I was trying to design a baseplate for a BTA mount my my skills are not the best.

Alexlp

Re: VeloBuild VB-TT-023
« Reply #299 on: November 09, 2025, 10:56:53 AM »
I was quite sure I would go with a medium but I’m a touch taller than you. What’s your inseam?
I'm 172cm tall with an inseam of 82cm, so I have a frame size M. Three independent AIs also recommended size M for me.