Originally Posted by
TiHabanero
No doubt the latex tubes are lighter by a significant amount for a tube, and the data shows they produce a faster wheel, however in our testing on aa 15 mile known time trial course with riders that did the course every week in season, the tubes showed absolutely no advantage. Real world testing done over a 1 month period. Two riders for a total of eight trials. The results were real.
How big of a discrepancy were you looking for, and how much precision did your testing have?
The speed advantage of latex tubes over butyl can be on the order of a couple tenths of a mph. It's very good as a performance-per-dollar change as road bikes go, but still small enough to require at least mildly careful testing to discern.