Thanks for all the information..
To answer Bills' question , I'm really just trying to maximize range while 
keeping the quasi-single chainring up front.  I believe I could achieve 
what I need with just getting a smaller chainring but I do find myself in 
the 40/12 often and I don't want to totally I've up on a high gear.
The advise to look at % difference between jumps in gear-inches is helpful. 
 I'm now leaning towards a 10 speed Sunrace 11-40 and keeping all shifting 
pieces ..just means I'lll need to keep it friction.

I do live in a somewhat mountainous region *(I know the Catskills are more 
like hills to some of you*) and load my bike up pretty often ...and I also 
know that I can achieve what I need with a triple which I've been happy 
with all these years.  I'm just excited to figure out a system where I have 
a wide low double in the front without a front-derailleur where I'm in the 
Middle position of a 110/74 triple crankset 90% of the time and have a wide 
gearing range in the back that will keep me moving *most* of the time.

On Thursday, April 5, 2018 at 4:14:01 PM UTC-4, Bill Lindsay wrote:
> Back to the OP.  What problem are you looking to solve by getting a new 
> cassette?  What are you running up front?  
> Bill Lindsay
> El Cerrito, CA
> On Tuesday, April 3, 2018 at 11:14:54 AM UTC-7, jandrews wrote:
>> Greetings, 
>> Curious if anyone here has any experience using this cassette.
>> I'm currently using the 12-34 version, which is pleasantly spaced like 
>> this:  [12-13-15-18-21-24-28-34].  The jumps go 1,2,3,3,3,4,6.
>> I'm interested in the 13-40 version, with has some odd-sounding spacing.. 
>>  . [13-15-17-21-25-28-34-40].  The jumps go 2,2,4,4,3,6,6.
>> I am happy the 8-speed setup on my SH and I don't really want to replace 
>> a bunch of parts.  I think I can swap out that cassette and maybe add a 
>> RoadLink 
>> <>
>> and be good to go.
>> Hoping to hear some direct user experience before purchasing.
>> Thanks
>> Jason

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