>>60757
>converting a tt frame
I thought so too at first but found that there's a BIG misunderstanding of the geometry charts because we just see the reach value and think 'that's a big number' but forget that the seatpost angle is steeper and the reach value does not take that into account.
The top tube is actually not really longer than normal (ridley noah fast) or even shorter than normal (most if not all tt bikes). You gain from that if you ride the saddle slammed forward on a slacker frame and want to go even further but if you don't there's no reach gain.
A mate of mine converted pic rel. for the road bike Kotl race and while 442 reach sounds like a lot the top tube is actually in the realm of most ~56 cm frames. With the same length stem his reach to the bars was identical to his 56 cm tarmac, just with a way more open hip angle because the saddle tip was almost over the bottom bracket