Then this may be of great help. It's been posted before here, but I've recently been speaking to Eric, the guy who made it, and he's now accomadated front chainring sizes well below 22t (the maximum before), so it's of much more use to us trialsers. I found it pretty useful, I'm sure those of you with the new HOD 116 spaced frames with *really* limited dropouts will find it helpfull too. Mike.