Originally Posted by
mihlbach
Do you know that for sure, or is that an inference you are making because the Omnium is billed as a track component? It might be stiffer, but what is "a lot" stiffer?
Personally, I wouldn't upgrade cranks for a moderate (and possibly imperceptible) change in stiffness. Possibly more tangible reasons to upgrade are: (1) the 144BCD of track cranks is compatible with highly refined 1/8" track chainrings which maintain a more even chain tension than most 130BCD road chainrings, (2) and possibly narrower Q which may feel more ergonomic and more comfortable (for certain people).
A well machined 1/8 chainring should be more round. Sounds like that's what you're alluding to. Never really had an perceptible issue with chain tension, but I might just go to the omniumns bc I'm building up a single speed for my dad and need a crankset for it.
The 1/8 chainring could be quieter too since I'm running a 3/32 chainring and 1/8 cog.