Dura Ace cassette mix and match

Is it possible to put a single cog with a spacer in between the 2-cog
and the 3-cog assemblies in a Dura-Ace 9s cassette? I have read that
there may be some questions about how the shift ramps line up, but will
the spacing be correct?

Also, does anyone know about mixing SRAM cassette cogs with Shimano? I
don't even know if SRAM cassettes can be disassembled to use individual
cogs. Can a SRAM 13 or 14 be used as the smallest cog instead of the 12
that is lowest smallest cog available in their cassettes? I know that
doesn't work in Shimano but I've never seen anything on SRAM one way or
the other.

Thanks.

An anonymous poster asked:

Is it possible to put a single cog with a spacer in between the 2-cog
and the 3-cog assemblies in a Dura-Ace 9s cassette?

Yes.

I have read that
there may be some questions about how the shift ramps line up, but will
the spacing be correct?

Yes.

Also, does anyone know about mixing SRAM cassette cogs with Shimano? I
don't even know if SRAM cassettes can be disassembled to use individual
cogs. Can a SRAM 13 or 14 be used as the smallest cog instead of the 12
that is lowest smallest cog available in their cassettes?

Unlikely. The top position sprocket has to have a built in spacer, and
it is desireable for it to also have serrations for the lock ring to
grip, though the serrations are probably not necessary if the lockring
is good and tight.

http://harriscyclery.com/9

Sheldon "Custom K7" Brown
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| If the King's English was good enough for Jesus, |
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Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
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On 17 Apr 2005 07:44:21 -0700, wrote:

I know that
doesn't work in Shimano but I've never seen anything on SRAM one way or
the other.

You can take a 12t first cog off a Shimano cassette and replace it
with a 13t first cog. The 1st cogs have the spacer as part of the
cog. With Shimano cogs, the 1st cog is not indexed to the second cog.

On 17 Apr 2005 07:44:21 -0700, wrote:

I don't even know if SRAM cassettes can be disassembled to use individual
cogs.

Sheldon didn't address this question in his reply, but the answer is
yes: they are held together by a bolt removable with a 1.5 mm hex
wrench, and can be installed on the hub without the bolt.

I just did a mix and match to tweak my gearing with compact rings up
front (50:34). My new 9 speed SRAM cassette is
11-12-14-15-17-19-21-24-26.

Might sound weird, but it works great. The 50:11 gives me a high gear
that is actually higher than the usual 53:12 that most of my friends
ride, so I don't spin out on when the group goes fast on flats and
slight descents; the 34:26 keeps me seated when the inclines are
wicked and everybody else is standing. I love compact rings.

Also, does anyone know about mixing SRAM cassette cogs with Shimano?

This I don't know, but in theory why not? The hub pattern and spacing
are the same, right? Sheldon?