Chris King Hubs & Lockrings

I've just built up a set of new mtb wheels with Chris King Hubs. When it
came time to fix a 9-spd XT cluster (11T cog on the bottom) I found that
the Shimano lock ring does not have enough threads to engage the drive
shell. According to the instruction sheet King the user "MAY" need their
lock ring on some 9-spd cassettes. I called CK and was told that Shimano
clusters have very wide tolerances that result in this thread engagement
problem. I suspect that is correct since I tried to fit an old 8-spd XT
stack to the hub and the clearance between the cluster hub and the drive
shell was so tight I doubt that could get it off once installed. The
kicker in all this is there is a 2 to 3 week wait for CK lock rings because
there has apparently been a run on them. A possible solution is to machine
off some material from the back of the cluster hub to allow the cluster to
seat closer to the drive side spokes. I have not verified the clearance
between the largest cog and the spokes but it seems like a lot of work to
get this combo to work. Another solution is to find another lock ring long
enough to engage the drive shell. Any possible candidates out there?

ALF

On Tue, 07 Oct 2003 15:12:32 GMT, Al Frost
wrote:
Another solution is to find another lock ring long
enough to engage the drive shell. Any possible candidates out there?

ALF

A long shot, but I had a Sunrace lockring bind up a new hub because it
was too long and was pushing against the cartridge bearing (a cheap
Performance Forte hub). Two different Shimano lockrings didn't cause
this problem. So see if you can locate a Sunrace lockring and see what
happens?

I have no idea how deep you need to engage these threads for an
effective installation, and no idea if a Sunrace lockring will be
safe.

Al Frost wrote:
I've just built up a set of new mtb wheels with Chris King Hubs. When it
came time to fix a 9-spd XT cluster (11T cog on the bottom) I found that
the Shimano lock ring does not have enough threads to engage the drive
shell. According to the instruction sheet King the user "MAY" need their
lock ring on some 9-spd cassettes. I called CK and was told that Shimano
clusters have very wide tolerances that result in this thread engagement
problem. I suspect that is correct since I tried to fit an old 8-spd XT
stack to the hub and the clearance between the cluster hub and the drive
shell was so tight I doubt that could get it off once installed. The
kicker in all this is there is a 2 to 3 week wait for CK lock rings
because there has apparently been a run on them. A possible solution is
to machine off some material from the back of the cluster hub to allow
the cluster to seat closer to the drive side spokes. I have not verified
the clearance between the largest cog and the spokes but it seems like a
lot of work to get this combo to work. Another solution is to find
another lock ring long enough to engage the drive shell. Any possible
candidates out there?
ALF



Tioga makes cassette lockrings. You might check to see if they have
longer threading on them. Icyclesusa.com sells them. You will get more
precision from Shimano's XTR cassettes. You might find one that works
better than your current XT. Shimano makes both an HG version and HG-C
version of their lockring. Since I don't have a stock of them, I am not
sure that the "C" version has any longer threaded area than the standard
HG lockring, but it may be worth checking. You should check the overall
dimension of the XT cassette in question. While you are checking
dimensions, see what the CK cassette body measures. You will see later
why I make these suggestions. Take a look at Shimano's web site at URL:
http://bike.shimano.com/product_imag...-M760-2267.pdf
Do you have the lockring spacer, item #2? Can you leave it out? Take a
look at Sheldon Brown's site, under Shimano cassette spacing, at URL:
http://www.sheldonbrown.com/k7.html#spacing Do the dimensions line up
with these detailed specifications? You might consider relieving the
loose cogs and spacers a little to get the "desired" dimension. I
understand that CK runs into these kind of issues from time to time. I
suggest that you place another call to them for a timely solution. They
will be able to tell who bought their last run of cassette lockrings.
You will need to check with those buyers to see who still has one in
stock. Since some of those buyers will be distributors like Quality, you
will need to deal with a shop that buys from the stocking distributor.



--
David Ornee, Western Springs, IL USA

--------------------------
Posted via cyclingforums.com
http://www.cyclingforums.com

Ritchey made a long thread lockring for their 2X9 setup
Tom

--
Bruni Bicycles
"Where art meets science"
brunibicycles.com
410.426.3420
daveornee wrote in message
...
Al Frost wrote:
I've just built up a set of new mtb wheels with Chris King Hubs. When
it
came time to fix a 9-spd XT cluster (11T cog on the bottom) I found
that
the Shimano lock ring does not have enough threads to engage the drive
shell. According to the instruction sheet King the user "MAY" need
their
lock ring on some 9-spd cassettes. I called CK and was told that
Shimano
clusters have very wide tolerances that result in this thread
engagement
problem. I suspect that is correct since I tried to fit an old 8-spd
XT
stack to the hub and the clearance between the cluster hub and the
drive
shell was so tight I doubt that could get it off once installed. The
kicker in all this is there is a 2 to 3 week wait for CK lock rings
because there has apparently been a run on them. A possible solution
is
to machine off some material from the back of the cluster hub to allow
the cluster to seat closer to the drive side spokes. I have not
verified
the clearance between the largest cog and the spokes but it seems like
a
lot of work to get this combo to work. Another solution is to find
another lock ring long enough to engage the drive shell. Any possible
candidates out there?
ALF



Tioga makes cassette lockrings. You might check to see if they have
longer threading on them. Icyclesusa.com sells them. You will get more
precision from Shimano's XTR cassettes. You might find one that works
better than your current XT. Shimano makes both an HG version and HG-C
version of their lockring. Since I don't have a stock of them, I am not
sure that the "C" version has any longer threaded area than the standard
HG lockring, but it may be worth checking. You should check the overall
dimension of the XT cassette in question. While you are checking
dimensions, see what the CK cassette body measures. You will see later
why I make these suggestions. Take a look at Shimano's web site at URL:
http://bike.shimano.com/product_imag...-M760-2267.pdf
Do you have the lockring spacer, item #2? Can you leave it out? Take a
look at Sheldon Brown's site, under Shimano cassette spacing, at URL:
http://www.sheldonbrown.com/k7.html#spacing Do the dimensions line up
with these detailed specifications? You might consider relieving the
loose cogs and spacers a little to get the "desired" dimension. I
understand that CK runs into these kind of issues from time to time. I
suggest that you place another call to them for a timely solution. They
will be able to tell who bought their last run of cassette lockrings.
You will need to check with those buyers to see who still has one in
stock. Since some of those buyers will be distributors like Quality, you
will need to deal with a shop that buys from the stocking distributor.



--
David Ornee, Western Springs, IL USA

--------------------------
Posted via cyclingforums.com
http://www.cyclingforums.com

Al Frost wrote:
I've just built up a set of new mtb wheels with Chris King Hubs. When it
came time to fix a 9-spd XT cluster (11T cog on the bottom) I found that
the Shimano lock ring does not have enough threads to engage the drive
shell. According to the instruction sheet King the user "MAY" need their
lock ring on some 9-spd cassettes. I called CK and was told that Shimano
clusters have very wide tolerances that result in this thread engagement
problem. I suspect that is correct since I tried to fit an old 8-spd XT
stack to the hub and the clearance between the cluster hub and the drive
shell was so tight I doubt that could get it off once installed. The
kicker in all this is there is a 2 to 3 week wait for CK lock rings because
there has apparently been a run on them. A possible solution is to machine
off some material from the back of the cluster hub to allow the cluster to
seat closer to the drive side spokes. I have not verified the clearance
between the largest cog and the spokes but it seems like a lot of work to
get this combo to work. Another solution is to find another lock ring long
enough to engage the drive shell. Any possible candidates out there?

ALF

I had the opposite problem with my last shimano cassette -- too short.
I had to add a shim.

But, my bike shop would have been happy to exchange it and send it back
to shimano as defective (they offered), but I put too many miles on it
before I discovered that it was a little loose.

SO, take it back and ask for one that fits!

David