Originally Posted by pelotonracer
A lot. If you're doing any serious sprinting, you don't want to be using anything other than clipless- plus, they're easier to get out of.
With clips, if you don't have the straps on tight enough, your feet come out during hard efforts. With straps on tight, you get circulation cutoff and the inability to release your feet.
In your experiment, your best average speed with the clipless pedals in Trial 1 (33km/h, 20.5 mph) is pretty good, but most racers are going to be quite a bit quicker than this. The faster you go, the more every little bit helps.
No question- clipless all the way.
To quote Botto-incorrect.
Many track racers still use toe clips and straps because they are more secure than clipless.
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Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1