>>1055791>1. Even if you use vintage parts there are plenty of freewheels with 13t cogs In 5 speed, like a proper OTS? No, not really. They exist, but they're rare. 12 speed and 14 speed sure.
>it's not that hard to find 53 or 54t chainringsWe're talking about an OTS, not an OTS with modern parts. Yes, they made 54t time trialing vintage rings. No, they're really not common, certainly not as stock equipment.
How the fuck is is an 80's 10 speed when you put on a modern freehub wheel and 7+ speed cassettes? This is ridiculous. All you're saying is vintage steel frame, not an OTS.
>2. Most steel frames can be spread to accept 130mm hub, which means there's nothing stopping you from using 11 or 12t cogs.The fact that it stops being an OTS once you start modernizing it.