Hi, I am replying here to a few questions that were asked in different posts.
About toe overlap
To be honest, front-center was never a number I used to check carefully.
I have been riding bikes for almost 30 years, usually in size 56/57, and I never really had this kind of problem before. The first time it appeared was with my Voicevelo Echo, where toe overlap is already annoying, but I simply did not think enough about it before buying the R8-RS.
Size 56 still makes sense for a racing setup: compact geometry, shorter bike, lower weight, more reactive handling, etc. But I did not pay enough attention to the front-center measurement.
Buying the R8-RS in size 56 was probably my mistake.
I want to be clear: I am not saying this is a bad bike.
I am not saying the geometry is wrong for everyone.
I am only saying that, for my setup, the front-center is too short and toe overlap is a problem.
This is not only about this frame. Many modern aero/race bikes have the same issue. For example, with a Cervélo S5 I would probably have the same problem.
So my post was more a personal frustration than a criticism of the R8-RS quality.
I just hope frame manufacturers will consider this problem more carefully. Short and reactive bikes are nice, but they also have to work in real-life low-speed situations.
Otherwise, some riders may choose the wrong size, or may have to sell the bike and choose another brand.
Comparison with other bikes and some thoughts
Before selling the R8-RS, I will still give it a proper test ride. I like the look of the frame, it feels light, and maybe even lighter than the Voicevelo Echo, although I may be wrong. My first feeling on the bike was very bad, but the mechanic had not replicated my fit measurements correctly, so I want to set it up properly and try again.
I usually like having two bikes, so I always have one ready to ride. Ideally, maybe two bikes from the same brand would make more sense, but I also like trying new frames. The R8-RS was meant to replace my Velobuild VB-R-368.
The Velobuild had the opposite problem: no toe overlap at all, very stable, and once launched on flat roads it had a very strong power-transfer feeling. But it did not feel great for accelerations, re-accelerations, and corners. It felt a bit heavy and slow to handle. Maybe this was also because I was used to a very different geometry, and because the handlebar felt too wide and too flexible for my taste.
About the Voicevelo Echo, overall I am happy with it. It was my main bike this year, and I also won two races with it. I was unlucky with my frame because after a few months it started making annoying noises around the seatpost area. Probably the seat tube tolerance was a bit too large. I know this can happen even with expensive Western frames. Normal carbon paste did not solve it, but a mechanic solved it using threadlocker and something similar to epoxy resin around the seatpost area.
Another thing about the Voicevelo is the original handlebar. It is extremely stiff. This gives a very direct and solid feeling, which is great, but on rough roads it is very harsh on the wrists. In the few kilometres I tried the R8-RS, the comfort over road vibration felt much better.
For now, I will set up the R8-RS correctly, ride it properly, and see if I can live with it. If not, I will sell it.
Lesson learned: from now on, front-center is one of the first geometry numbers I will check.
With hindsight, maybe size 58 would have been the better choice. It would have given more front-center, less toe overlap, and probably a cleaner cockpit setup. But of course it would also be a bigger and longer bike, and I am not sure I would have liked the handling. Size 56/57 has always been my usual size.