looks like you used the carbon pro compact, with octalink bb, on your r2.5. what’s your take on the megaexo bb setup? (and why octalink vs. megaexo vs. issis?)
Hello,
Octalink is proven, but you have a fairly limited selection of bottombrackets, nothing superlight.
ISIS is proven also, but many users claim poor bearing life with the bottom bracket, which makes sense as the bearings are small.
Megamo is one of a number of “integrated systems” (sweetwings, magic motorcycle, 10 speed dura ace/ultegra, being others). You have virtually no choice of Bottom bracket and crank, once you’ve chosen one you have to use the coreseponding part. They due tend to be durable and fairly light systems.
Styrrell
actually the sweet cranks were famous for developing play in the the bb. what point is it to have a stiff crank if there is movement in the bb.
I’m a compact convert, too. I’m in my 55th week with the compact pro on my road bike, which sees much more frequent and harder use than my tt bike. and I’m a shimano man who has a lot of faith in the ultegra cartridge bb. the da was an over-engineered, maintenance heavy piece of crap that always creaked. put 10k miles on the ultegra, spend $40 and replace it. after reading so much about issis failures, I wouldn’t have one. I was wanting tom d’s opinion on the megaexo (da/ultegra/xtr…) vs. octalink. the old “standard” bb has served us well for a long time.
I can’t say I know much at all about the new generation of splined bottom brackets, but I’m exceptionally fond of my tapered-square Miche (GranTour) bb/compact crankset. It’s smooth as silk, and solid as a rock. It’s a little different too, which suits me very well.