Zack:

What cassette are you using now?  What's your tooth range?  Standard Riv 
spec 24/36/46 chainrings?

Swapping out cassettes is the same procedure, and you will need an "8 to 7 
spacer" to fill the gap.  Chains are the same.  The beauty of this is that 
you can go back to 8 if 7 doesn't work out.

For a self-described big guy living in Portland with friends who like to 
ride hills, my choice would be the 13-34.  As to quality, I've got an HG-50 
with over 10,000 miles on it that still works fine with Shimano indexed 
shifters.  This is a 7 speed, 13-28 cassette with a 34 big cog from a 9 
speed, all spaced with 8 speed spacers.  The 6 tooth jump from 28 to 34 is 
just another shift, even under load.  IME Shimano is conservative in their 
tooth / gap specs (the Mega range being an exception, it seems).  

I also have the 14-32 7 speed on another bike, and find that spacing & 
range shift well.  Don't recall the grade of cassette on that one but I've 
had it for ages.  7 speed stuff is pretty long lasting and still made for 
OEM use in other parts of the world.

dougP

On Tuesday, April 15, 2014 2:00:57 PM UTC-7, Zack wrote:

> I have a 64cm Sam and a 62cm Hunq, I am guessing flame flex is most likely 
> not the problem.
>
> So back to the original question about cassette choices, I see three 
> shimanos that seem to fit the bill for me.  It's difficult for me to 
> visualize what the real-life on-bike difference would be, beyond what the 
> top and bottom gears would seem like.  So "big jumps" are not desirable, 
> from what I gather.  Does this have more to do with what it feels like to 
> ride, or is it the actual of mechanics of the shifting that makes the big 
> jump less desirable?  Also, are these actually big jumps?  
>
> *CS‑HG50*
> C, G13151720232630*CS‑HG50*
> K13151720242934*CS‑HG50*
> D, F14161821242832
>

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