andrewl":159rfh1t said:
If I'm not that fussed about the race sometimes I'll race the old bikes, but they are all slower than my modern bikes.
I realise that to dispute this is daft, otherwise people would be out winning world cup races on retros, however...
Given a reasonable budget, ie not megabucks, I reckon the chances are you could put together a faster retro than modern, mostly due to the cost or weight penalties of suss forks, discs and wheels. Obviously with the more money that's thrown at it the more a modern will start to show it's advantages. If I had to take a stab at the tipping point, maybe £6-700 list price? Of course that's looking at new prices so arguably very unfair on the modern, but I am just musing aloud!