650C vs 700C wheels for triathlon bike



gclark8 said:
OK, some best times for my old cross town commute:

Merida MTB with flat bars and Conti Sport Contact 26x1.3 Slicks: 42min,
Giant Upland Ladies MTB, Purple, with my 650c training wheels/Conti Ultra Gator Skins: 47min,
Felt SR81 with 700c Conti 23mm GP4000 tyres: 50min
Felt SR81 with 700c, the original 25mm Felt Kevlar tyres: 55min.

Yes, in the real world, tyres and wheels and gearing, all make a big difference. ;)
Best times are probably not the best way to judge. Try average times. I have a regular 16 mile course I ride for a baseline. My average time is just under 45 min. The difference between best and wost time in 12 min. Same bike, same set up. The difference is the number of red lights I get caught at and the location of the lights. I have one 2.5 mile 2% segment that has three lights. If I catch all three green I have a good time. If I catch all three red, the time goes to ****.