in general, roadbike frame geo is different to tri frame for seattube angle, toptube lenght n reach.
however there are some exception. frames like new scott foil (ttx38) is as close as it gets to a tri geo as its close to old gen scott plasma 5

https://geometrygeeks.bike/bike/scott-plasma-5-2015/
https://geometrygeeks.bike/bike/scott-foil-rc-ultimate-bike-2024/

i have both tt912 n ttx38 in similar ride position (but i havent fully convert the ttx38 cockpit to tri), tho i like the tt912 for pure staight line speed due to its chonky tubes for sail effects

as someone who ride this frame like a tribike (saddle so far fwd) with clipon aerobars on reach extenders, this frame is as close as it gets to a tri bike posi, at least as close almost equal my tt912. as your saddle go higher, the saddle isnt going further back (thus your seattube angle increases, like old plasma)
so i get it why Seb Kienle used a modded ScottFoil as tri bike (he's sponsored by Scott, but he still had access for top tier lightest Plasma if he wanted).
downside, missing toptube boss-mount for bento box, or any internal storage for tools.

if anyone on a budget for tri bike build, this frame is worth a consideration as its almost half(but dont include tri cockpit) of tt912 or other tri frame price. but you need to go full internal cabling, n i suggest go axs for least cable goin thru the top bearing

A few rides and a quick aliexpress order later i have proper crankset spacers on hand.
Did not find any new/worsening scratches after removing the cranks so i'm calling the gap large enough for my meager power.
Definitely mixed something up as i had used a 1.2mm 3d printed shim before (not 0.7 as i thought), ended up settling on 1.3mm from a cheap muqzi set. It's just within the adjustment limits of the R7000 front derailleur.

It's definitely a bodge but it's my bodge.

i guess i need those shims as well for my p505base on my tt-x38 t47 bb.
currently the crank can spin just fine, but there are some scratches on the bb shell. 0.5-1mm outward on driveside may help

Hi everyone,

Since someone was referring to a VeloBuild VB-TT-023 here, here's my build. It is a weapon. Very fast and very sexy looking.

The only thing was that the original cockpit wasn't working well for me. Too low, too close to my body and too narrow.

So I customized the cockpit quite a bit:

#1: I cut a custom aero bar base plate from a 4 mm thick carbon sheet in order to bring the underarm rest pads more outward and further forward than the original base plate would allow.

#2: This also allowed me to add a QuadLock mount for my phone, so that I have my data right between my arms.

#3: I 3D-printed two one-piece 12 cm tall spacers. In order to give them more stability, I replaced the long M5 bolts with thicker, extra-long M6 bolts, which meant I had to drill the holes in the handlebars a tiny bit wider.

#4: I also 3D-printed a little box that is attached underneath the aero bar base plate and which can slide in two energy gels while I’m riding.

#5: I ended up not attaching the water bottle to the seat post. I attached it to the down tube. Looked better and way easier to grab the bottle while riding.

Photos (incl. Adobe Illustrator drawing of the custom carbon aero bar base plate I built):
https://drive.google.com/drive/folders/1mE7LtKe21CTyAYtPoBpYAIpCF4da8K-i?usp=sharing

Feedback appreciated!

Have a good one!
Martin

/i still havent finalized the location for sram blips on my basebar.

your basebar reach is so long. are you customing some kind of extender before the brake level?

my tt912 basebar is flipped downside up whic i like, but longer reach would make it better

just sharing info.
i have a 2021 aluminium tcr that i wanted to sell due to cant upkeep too many bikes n kinda narrow tire clearance.

this is what d50cu-33 looks like with 28mm powercup balooned to 32mm at the chain stays 
/like 1mm gap on drive side(even rim gap to stays), n 3.5mm on other side

so happen the colab frame designers are on slowtwitch forum, n explained their ideas behind the chosen geo
https://forum.slowtwitch.com/t/hongfu-avenger-tribike-2025/1288609

im not sure about thailand, but afaik Camp bike has presence in Malaysia, indonesia n philipines market. 

in malaysia, besides java, sava n camp, theres also twitter n alcott bikes.
i've seen ppl race these ar local crits n du/triathlons