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Join Date: Jun 2014
Location: Ontario, Canada
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Bikes: iele Latina, Miele Suprema, Miele Uno LS, Miele Miele Beta, MMTB, Bianchi Model Unknown, Fiori Venezia, Fiori Napoli, VeloSport Adamas AX
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Gee, I guess I was imagining things then. LOL VBEG
What I SAW, was this. The shape of the front derailleur cage on the derailleur designed to be used with a 28 ring had a far more gradual curve to it and a longer curve than did a derailleur designed for a 22 ring. Thus when the crank with the 22 ring was installed the rear of the derailleur cage would catch the on top of the chain and jam when trying to shift up from that 22 ring. That's precisely why derailleurs designed for use with a 22 rung have a different cage shape than one designed for use with a 28 ring.
Cheers