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PostPosted: Sun Apr 07, 2013 4:16 pm 
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Joined: Sun Mar 18, 2012 10:30 pm
Posts: 7
Hi

I am looking for advice or expert knowledge on cassettes. I usually ride a 12 - 25T 10 speed cassette, which is generally fine riding in the Peaks. However, I'm riding the Fred in a few weeks and would like the security of lower gearing for the challenges that ride involves. I have a Shimano 12 - 27T cassette but don't really like the big jump from the 24 to 27T sprocket.

I started looking around for a 13 to 28T cassette as I can't say I use the 12T sprocket a great deal. But only seem to be able to find cassettes which jump from 25 to 28T. ideally I would like to keep sprocket spacings at a 2T limit.

I think my ideal ratio would be 13-14-15-16-18-20-22-24-26-28. However, I can't find anything to match this. BBB do loose sprocket cassettes and I can get every sprocket I need by combining two cassettes except the 26T.

Any one got any suggestions or ideas?


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Posted: Sun Apr 07, 2013 4:16 pm 


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PostPosted: Sun Apr 07, 2013 5:24 pm 
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Marchisio sprockets will solve your problem. You can mix sprockets 3-9 up with Shimano sprockets. You can order them online at http://clemenzo.com.

Miche has a similar, but much heavier product.

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PostPosted: Sun Apr 07, 2013 9:57 pm 
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^could you elaborate?


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PostPosted: Sun Apr 07, 2013 10:06 pm 
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Every factory cassette I've seen with a 25 or larger will have a 3 tooth jump at the end. If you get the Marchisio cassette, let us know how it shifts. I've seen mediocre reviews, but really like the idea of picking my own cassette cogs.

Good luck


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PostPosted: Mon Apr 08, 2013 2:58 am 
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You best bet are Shimano's 12-30 or 12-27 cassettes.


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PostPosted: Mon Apr 08, 2013 3:59 am 
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Assuming this is for 10 speed shimano, it can probably be done by combining 2 cassettes, one from the 6700 series, and one from the 6600 series.

Shimano tech docs on 6700 and 6600 cassettes,
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/CS/EV-CS-6700-2924B_v1_m56577569830799947.pdf
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/CS/EV-CS-6600-2370_v1_m56577569830608752.pdf

You can probably do it by getting a 6600 16-27 junior cassette. This has a 23-25-27 unit at the end of the cluster.

Then getting a 12-30 6700 cassette, you will then have 12, 13, 14, 15, 17, 19, 21 as single cogs.

Note, i've never done this before, but it should work.

Cheers,
Ian


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PostPosted: Mon Apr 08, 2013 12:29 pm 
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Just ordered a new 10 speed cassette in the desired ratios from Clemenzo Cycling as suggested by Havana. They were very helpful. They didn't recommend mixing with other sprocket makes, and this can only be done with the older junior line sprockets anyway, which I can understand. Went with the new MTK system which is supposed to offer better shifting than the old junior sporcket system, which is also not recommend above 9 speed.

I will update when I get the cassette and get to ride it.

For info cost was £119 shipped.


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PostPosted: Mon Apr 08, 2013 12:43 pm 
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A bit too late, but I've been liking the SRAM 11-28 a lot last season. Ok, it's got the 3 cog gap to the second gear, but I hardly ever find myself using that one. Will also try a Shimano 12-30 this year, should be great for longer slower rides in the mountains.

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PostPosted: Mon Apr 08, 2013 2:34 pm 
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metal wrote:
Assuming this is for 10 speed shimano, it can probably be done by combining 2 cassettes, one from the 6700 series, and one from the 6600 series.

Shimano tech docs on 6700 and 6600 cassettes,
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/CS/EV-CS-6700-2924B_v1_m56577569830799947.pdf
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/CS/EV-CS-6600-2370_v1_m56577569830608752.pdf

You can probably do it by getting a 6600 16-27 junior cassette. This has a 23-25-27 unit at the end of the cluster.

Then getting a 12-30 6700 cassette, you will then have 12, 13, 14, 15, 17, 19, 21 as single cogs.

Note, i've never done this before, but it should work.

Cheers,
Ian


Apparently, you can buy a separate 13T last cog for Shimano Dura-ace, along with the DA 14, 15 and 16 intermediate cogs.

So you could get the CS-6600 in 16-27 ( assuming you can hunt one down) , take out the 23-25-27 stack.
Then get the CS-6700 in 12-30 and take out the 17, 19 and 21.

Then you stack all together and you will get a very nice and linear 13, 14, 15, 16, 17, 19, 21, 23, 25, 27 !!


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PostPosted: Tue Apr 09, 2013 9:28 am 
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Joined: Sat May 12, 2012 7:25 pm
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Location: Glermsford, Suffolk U.K
Miche do a 13-28T HG cassette.

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Posted: Tue Apr 09, 2013 9:28 am 


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