Interesting. IMHO, based on personal experience, I would recommend to add one size to your usual road bike for those vintage time trial frames, ie don't hesitate to go for it if you usually ride 56cm (ish) bikes.
@Quartzy started
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Interesting. IMHO, based on personal experience, I would recommend to add one size to your usual road bike for those vintage time trial frames, ie don't hesitate to go for it if you usually ride 56cm (ish) bikes.