Splined-sprocket fixie hub

David L. Johnson said:

Adam Rush said:

Is there such a thing as a fixie hub which accepts splined
sprockets
(e.g. Sachs, Shimano, S-A)? I know there are many cheap
threaded and lockringed options, but I have so many
dreigang sprockets laying around.

Is there a reason this not feasible or popular--other than
the fact that they only go to 15-tooth?

I have seen such a thing, but IIRC it was its own spline
pattern, not designed to fit, say, a Shimano cassette cog.

made by Miche

/Marten

Miche's design is only for their splined cogs & they seriously missed the
mark with their design as instead of saving the hubs main thread you end up
using the lockring thread instead. Ideally they should have built a lockring
into their steel boss instead of relying on the hub's.
"m-gineering" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

David L. Johnson said:

Adam Rush said:

Is there such a thing as a fixie hub which accepts
splined sprockets
(e.g. Sachs, Shimano, S-A)? I know there are many cheap
threaded and lockringed options, but I have so
many dreigang sprockets laying around.

Is there a reason this not feasible or popular--other
than the fact that they only go to 15-tooth?

I have seen such a thing, but IIRC it was its own
spline pattern, not designed to fit, say, a Shimano
cassette cog.

made by Miche

/Marten

On Thu, 10 Jun 2004 20:49:50 +0800, "Steve" <[email hidden]>

Quoted message said:

Miche's design is only for their splined cogs & they
seriously missed the mark with their design as instead of
saving the hubs main thread you end up using the lockring
thread instead. Ideally they should have built a lockring
into their steel boss instead of relying on the hub's.

If the lockring were part of the adaptor, there'd be nothing
to prevent the adaptor from unscrewing from the hubshell if
(when) significant reverse force is applied. There's a
picture (~56k) of the Miche system at

businesscycles.comtcog miche4.jpgOpen ↗

On the hub in the photo, a sprocket adaptor (lower left) has
been threaded onto the hub's sprocket threads and the
splined sprocket (lower right) pressed on the adaptor. The
lockring (upper right), once fitted, will keep the sprocket
in place and prevent the adaptor from unthreading in the
event of back pressure.

The page on which this photo appears is businesscycles.comtcogOpen ↗
miche.htm

John
-------------------------------
John Dacey Business Cycles, Miami, Florida Since 1983 Our
catalogue of track equipment: online since 1996.
businesscycles.combusinesscycles.comOpen ↗

John Dacey <[email hidden]> wrote in message

Quoted message said:

The page on which this [miche splined track cog] photo
appears is businesscycles.comtcog miche.htmOpen ↗

wow, i knew it existed, but didnt know how it worked. i wish
there was a version of these that accepted shimano cassette
cogs, maybe with a spacer between the cog and the lockring
as necessary. would be simple enough. are the shimano cog
splines uniform enough to be able to make a splined body
that would reliably accept them with a tight (press) fit?

maybe something for Surly to make?

anthony

"John Dacey" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

Steve said:

Miche's design is only for their splined cogs & they
seriously missed the mark with their design as instead of
saving the hubs main thread you end

up

Quoted message said:

Quoted message said:

using the lockring thread instead. Ideally they should
have built a

lockring

Quoted message said:

Quoted message said:

into their steel boss instead of relying on the hub's.

If the lockring were part of the adaptor, there'd be
nothing to prevent the adaptor from unscrewing from the
hubshell if (when) significant reverse force is applied.
There's a picture (~56k) of the Miche system at

businesscycles.comtcog miche4.jpgOpen ↗

On the hub in the photo, a sprocket adaptor (lower left)
has been threaded onto the hub's sprocket threads and the
splined sprocket (lower right) pressed on the adaptor. The
lockring (upper right), once fitted, will keep the
sprocket in place and prevent the adaptor from unthreading
in the event of back pressure.

The page on which this photo appears is businesscycles.comtcogOpen ↗
miche.htm

I use this system and it's fantastic in that gear changes
can be made much faster (and with less mess). Additionally,
the Miche lockring mates perfectly with the 6-prong Shimano
Durace BB lockring tool (for the 9sp BB). As the chain's
force isn't being applied through the lockring (assuming
there's nothing horribly wrong with your chainline) this
lockring design isn't any worse or better than a standard
track cog set-up. (as you still need to un-do and do-up the
lockring just as often, its just that you then don't have to
un-do and do-up on the hub's sprocket thread all the time
too). Throw your chain-whip away..... The Miche crankset
also save times changing gear as the chainring bolts thread
directly into the crank arm, so you don't mave to muck about
looking for the backs of the chainring bolts on the floor.
Someone reported on aus.bicycle that they had managed to rip
some of the chainring bolts' heads off, but the thread in
the crank was undamaged. I don't know what happens if you
strip the thread in the crank.....

Cheers Gemma Gemma

Gemma Kernich said:

The Miche crankset also save times changing gear as the
chainring bolts thread directly into the crank arm, so you
don't mave to muck about looking for the backs of the
chainring bolts on the floor. Someone reported on
aus.bicycle that they had managed to rip some of the
chainring bolts' heads off, but the thread in the crank
was undamaged. I don't know what happens if you strip the
thread in the crank.....

I suppose you just clear the swarf out of the stripped
threads and use conventional two-piece bolts.

James Thomson

ant said:

John Dacey <[email hidden]> wrote in message

Quoted message said:

The page on which this [miche splined track cog] photo
appears is businesscycles.comtcog miche.htmOpen ↗

Quoted message said:

wow, i knew it existed, but didnt know how it worked. i
wish there was a version of these that accepted shimano
cassette cogs, maybe with a spacer between the cog and the
lockring as necessary. would be simple enough. are the
shimano cog splines uniform enough to be able to make a
splined body that would reliably accept them with a tight
(press) fit?

Quoted message said:

maybe something for Surly to make?

The ID of a Shimano splined cog is about 32mm, while the
threads on a track hub/cog are 1.375", about 35mm. So
there's no way to make that work with a threaded-on adaptor
like the Miche unit (unless the adaptor sticks rightward
beyond the threads, which has a new set of problems). I
assume the extra diameter of the adaptor is also why the
Miche cogs only go down to 14t.

Conceivably someone could make a fixed splined hub that
accepted Shimano cogs held on by a lockring, shades of
Uniglide. I think the splined part (the non-freehub) would
have to be steel, aluminum would get severely notched.

BTW, if you use Shimano cogs for singlespeed applications,
Uniglide or BMX cogs are preferred - Hyperglide cogs have
short deformed teeth for easier chain derailment.

James Thomson said:

Gemma Kernich said:

I don't know what happens if you strip the thread in the
crank.....

Quoted message said:

I suppose you just clear the swarf out of the stripped
threads and use conventional two-piece bolts.

Or maybe enlarge the hole and put in helicoils.

--
Dave dvt at psu dot edu

On 11 Jun 2004 00:46:10 -0800, Benjamin Weiner <[email hidden]>

Quoted message said:

ant said:

John Dacey <[email hidden]> wrote in message

Quoted message said:

The page on which this [miche splined track cog] photo
appears is businesscycles.comtcog miche.htmOpen ↗

Quoted message said:

wow, i knew it existed, but didnt know how it worked. i
wish there was a version of these that accepted shimano
cassette cogs, maybe with a spacer between the cog and
the lockring as necessary. would be simple enough. are
the shimano cog splines uniform enough to be able to make
a splined body that would reliably accept them with a
tight (press) fit?

Quoted message said:

maybe something for Surly to make?

The ID of a Shimano splined cog is about 32mm, while the
threads on a track hub/cog are 1.375", about 35mm. So
there's no way to make that work with a threaded-on adaptor
like the Miche unit (unless the adaptor sticks rightward
beyond the threads, which has a new set of problems). I
assume the extra diameter of the adaptor is also why the
Miche cogs only go down to 14t.

Conceivably someone could make a fixed splined hub that
accepted Shimano cogs held on by a lockring, shades of
Uniglide. I think the splined part (the non-freehub) would
have to be steel, aluminum would get severely notched.

BTW, if you use Shimano cogs for singlespeed applications,
Uniglide or BMX cogs are preferred - Hyperglide cogs have
short deformed teeth for easier chain derailment.

The steel spline needs to be fixed to an alloy hubshell (or
alloy flanges need to be fixed to a steel
spline/barrel/bearing carrier) in a way which can transmit
the torque from the sprocket to the spokes. The Miche system
does this nicely without a hub redesign, with the minor
inconvenience of restricting you to a 14t minimum. The
advantage of quick and easy sprocket changes, together with
reduced wear and tear on the sprocket thread, makes it very
attractive. The sprockets seem nicely made, and even
including the carrier they're cheaper at my LBS than either
Dura Ace or Suntour. I'm not sure the Shimano cassette
spline lends itself to being made close enough fitting to
avoid backlash. Adventurous home mechanics might also try
fitting a sprocket onto an ISO 6-bolt disc hub, apparently
you only need 3 bolts for small sprockets, though this is
still more work to change than the Miche.

I concur about the BMX (DX) sprockets; they're cheap and
widely available, though I bet the expensive and hard to
come by King Kogs are even better on your singlespeed.

Kinky Cowboy*

*Batteries not included May contain traces of nuts Your
milage may vary