fastpedaller wrote:bgnukem wrote:Also IME the basic version (with 2 steel rings and an alloy outer) didn't work well with a 9-speed chain, which got stuck between the outer two 'rings on my bike.
I'm a bit puzzled by the above statement, as my XD2 (which I think is the 'basic' referred to) came with aluminium alloy rings, not steel. Are you referring to another Spa chainset?
Was recalling from memory as the original rings have been binned, but looks like you are right. The basic XD-2 set costing £38 comes with basic ali rings. The more expensive versions with 'zicral' aluminium alloy rings. I suspect the more expensive rings are wider than the cheapo ones (i.e. below the teeth) which perhaps makes it less likely a narrow chain (9-speed in my case) will get stuck between them.