Join Date: Apr 2009
Location: Smugglers Notch, Vermont
Bikes: Upright and Recumbent....too many to list, mostly Vintage.
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Bob thank you, I may take you up on that offer, I'll PM ya about it a little later today.
This is going on a 52-43-34 crankset.
robatsu, I sort of
have a specific reason but its more an idea that I'd like to bring to fruition, and I'm definitely open to suggestions outside of what I've come up with. My aim with the corncob+bailout cog is basically to use 6 out of 7 cogs for normal riding, and get the benefit of nice close ratios from the corncob and save the big cog for big hills when I'm already in the small chainring.
even with a 5 speed (on the aforementioned triple) 14-15-16-17-??? I'd get around 6% steps between gears all the way from 50 on up to 100 gear inches and the ??? is however big of a Jump i can convince my RD to do.
The other thing I considered is the 14-16-18-20-22-26-34 Megarange freewheel and change the middle chainring to a 49T. the resulting 52-49-34 chainset would produce about the same results as the corncob+bailout idea. Problem is finding a 49T 86mm BCD chainring