Originally Posted by
operator
The system sucks ass. Play eventually develops between the carrier and the cog, producing noise. Which means replacing the carrier and cog when that happens. Seen it enough times to tell you that it's only useful under specific situations where cog changes need to be very quick.
I have not experienced problems with play developing, however, I use this system on the track where I am not constantly back pedalling and reversing the loading on the splines. As you said, the main advantage for someone like myself is that on the track I can make quick gear changes during workouts or races.