OK. Because I am insane, and also a woodworker, I have decided to build my own set of rollers. I am going to glue up hard maple and make large rollers, probably in the 6-7" diameter range. I am doing this to make a very smooth ride, and because again I am insane.

Now to my question. I have ridden straight rollers many years ago but am not the dedicated cyclist I was 20 years ago. When I turn these on my lathe, should I make them with a very slight parabola so that the riding is a bit easier? Or is this cheating or in some way going to make for a less effective training experience.

Has anyone out there ever ridden on parabolic rollers and what was your experience? Thanks