So has anyone tried a q ring for cross? I run a single ring setup in campy and when just peddling I can feel a dead spot ...My question is given the active nature of cross I'm not sure if I would benefit from the dead spot removal....My brain at lactic threshold for an hour won't notice the spot but I could use any increase in speed...as we all know seconds add up in a cross race...
I'd save my money, I haven't seen any credible evidence that non-round chainrings increase either power or endurance.
I have been back and forth with Q Rings over the last couple years. Road, mtn and CX. And in the end after riding with and without them, I use them exclusively. They wear almost like iron, and I love the Q feel. I like a higher rpm as I get older and it seems to help whip around the circle, begging me to shift up another cog and keep cranking. My CX set up is single in front with a chain keeper on inside and light guide ring on the outside. Never lost a chain this way, and if I did in a crash I could just pick up the chain and drop it back on the ring. A closed top system like Pauls guide would not be good idea as the ring is changing height and adjustment would never be correct. I use a 36t front with SRAM 12-27 CX cogset in rear. Standard Force rear derailer.
As a side note, in the day before clutch derailers on mtb, I dropped the chain more than I wanted. But ever since the Type 2 was released, chain drops are not an issue. I did drop it 1x in August and that was as much low gear limit screw as wobbly rings fault.