http://www.actiontec.us/prices.htm

I was playing around with my bike's granny gear today and the difference between 3rd and 2nd in the rear (21 and 26t, respectively), is about the same ratio difference between the middle ring + 32t cog (lowest I have now), and the same 32t ring against a 39t cog. So, 22/21-->22/26 is roughly equal to 32/32 --> 32/39. This provides a pretty noticable decrease in pedal effort required for the roughs, and just for kicks I was able to climb up onto a 12" square railroad tie from a standstill with noticably greater ease.


I am not quite sure I am ready to drop $300 for the full Ti cassette, though I'd hate to spend $70 on the HG61 cassette and wish I'd gone a bit lower for $20 more (for a single cog). However, I'd want to make sure I could get away with just dropping one of the single 39t cogs into my cassette (removing the 11 or 12t cog in the process) without mechanical issues. I have read that my derailer should still work fine, but would there be any shifting or physical installatation issues just adding the 39t cog added to my cassette?



Thanks!

*edit*

Same questions for this 36t cog (as far as function and such): http://www.ebay.com/itm/36-Tooth-Cog...item3cc1074924

At $34.50, it is the cheapest solution.

If not, I might also experiment with the "Mega Range" 34t cog I had on my old Raleigh. If it fits on my cassette without issues, I might just get a 30t front chainring from Anderson ( http://andersenmachine.wordpress.com/product-info/ ). I'd end up with the same low range with the 30/34 combo as I would adding a 36 to my current cassette and keeping the 30t chainring.

How well do you guys think each of these would work?

*edit*

And finally, am I currect in my understanding that I would still have to keep the 11t "first-position" cog?

Thanks!