"You can do that, absolutely.
That is going to make for a big jump between the two rings. Also you're not getting (or going to get) much use out of that 46t ring. Might as well replace that with something you can use like a 42 or even 40.
"I'm not sure the Tufo tires are still around in that model. They weren't that great to begin with and you can roll them off too. I've done it. They are a pain to mount too.
Open tubular is a clincher of a certain make, so it's…"
Funny... I had a 42, single ring, in 2007. Always felt I wasn't able to keep up on the road sections, and wished I had the bigger ring. Went to Nats and got outsprinted (for 27th...) Went to the 46/38 for 2008 and had one of my best seasons ever. I've been thinking of going to a 44/36, though. Been struggling a tad this year with the climbs. Got married, took time off, had family in town... and it's all crashing down now!
See you on the start line somewhere along the way!