Hello it’s so nice to be again.
Not that I’m complaining, thoughts you. For instance, simply earlier than leaving for trip I obtained a bundle from the Outdated Spokes House in Vermont. Not solely did it comprise these scorching canine roasting tongs:

However much more extremely it was additionally replete with Biopace [pronounced “BEE-oh-pa-chay,” and make that Italian hand gesture while you say it] chainrings:

Typically talking, the one much less fascinating part than a Biopace chainring is a yellowed pie plate. Nevertheless, because the biking world is aware of, I’m an avid Biopace proponent:

And now that the Outdated Spokes House has lastly divested themselves of theirs, this formally makes me the world’s foremost dwelling repository* of Biopace chainrings, and I can solely assume a field of yellowed pie plates will quickly comply with.
*[I mean sure, noted Biopace proponent Sheldon Brown probably had more than I do, but I shouldn’t have to remind you he’s no longer alive.]
Then once more, on nearer inspection it seems a number of the Biopace chainrings are bogus, and are in actual fact Sugino’s tackle the idea, which they known as “Cycloid:”

It’s superb Sugino felt the necessity to copy Biopace since no person even needed the actual Biopace, and it could be many years earlier than any firm got here up with branding extra unlucky than Cycloid:

[Just another Cycloid dressed like a PNS.]
So will I be utilizing these Biopace (and Cycloid) chainrings? You guess I’ll! Granted, I’ve by no means used a Cycloid chainring, and rumor has it that for those who combine Cycloid and Biopace chainrings on the identical crank your joints will seize and your knees will explode–although personally I believe that’s a lie and I think there’s most likely a synergistic impact that can launch me into supersonic speeds.
By the best way, 45 seconds of Web analysis reveals that apparently Cycloid remains to be a factor, since as everyone knows elliptical chainrings did wind up catching on in any case:
I can’t wait to Tremendous Hill Climb.