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I run a 54/42 chain ring set-up on my TT bike. I purchased the Zipp 300 cranks and switched those chain rings out and put on the Shimano Dura-Ace 54/42 tri rings. Easy to do, just make sure your BCD is matching up correctly. You should be able to order the DA TT rings thru your LBS with little problem. DA has them as a 42/54, 42/55, and 44/56 which, according to the book, give the best shifting matching up with the least shifting problems.
Hope that helps.
Kevin, he asked about 110mm BCD, your information while accurate (130mm BCD Dura Ace chainrings do fit a 130mm Zipp 300 crankset) isn't partiularly helpful for the OP, in fact his response seems to incidate that he feels your advice somehow solves his problem.
True about being fairly common knowledge. But, so is using ones turn signal when driving.
It is helpful and fairly common knowledge that it is to be used, but still, we must be reminded to use it.
I personally took the "Thanks Kevin" as just that, someone thanking me for taking time to at least answer a question, though slightly off the mark.
On my original set-up with the Zipp cranks and DA it went really well and I have enjoyed it.
I was also looking to get the new Vumaquad cranks and do the same set-up. But, Zipp changed the BCD and went from a 5 arm to a 4 arm spider set-up. I inturn had to do my research and ask a few questions to see if it would work (putting different chain rings on the cranks). I elected to stay with my current crank set-up after seeing what was and was not available. In the end, I decided if it's not broke, don't try and fix it.
Personally I run a 52/39 on the front, and I find that for the range of usage that I use and the type of ruding that I do this is ideal. When I am in the big ring(52) for most of the time the chain is on the middle cogs in the back and running in a straight chain line.
Of course, your milage may vary! :)
Steve Fleck @stevefleck | Blog
It's my feeling that with more and more people going with compact cranks there should be someone out there making an adapter to run the larger chain ring sizes while using the compact cranks' 110 bcd set up. It would give a huge variety of uses to one crankset. Hey there's and idea for the inventor out there... Or maybe not, and I'm just peeing into the wind!
In an 81 degree angle on a 50/34, I thought it was great. I borrowed a bike for a race, dialed in my fit and payed no attention to the cranks. Did the race, bike split felt easier and a much smoother cadence. After the race I checked the cranks and they were 2.5mm shorter and CTs!
I thought great CTs 4 life now.. Slapped them on my roadie 6 months later and noticed a deadspot in my pedal stroke. Upgraded to 52/38 chainrings and found that sweet spot again.
I would suggest trying 52/38, the cassette was negligible for me at least. I ran a 50/34 with an 11/23 then turning to a 52/38 with a 12/25 and felt more power with the later. FSA 52/38 Super Road Chainrings is what I used.
Good luck, Keau