Rohloff Shimano cassette checker... not straight forward

Per Deep Thought:

Quoted message said:

would appear to indicate "variable" results

I went through the same thing.

Still unresolved because I haven't ordered a micrometer that's sensitive enough
to measure the chain links involved.

But my current suspicion is that it's something to do with the way the tool in
inserted into the chain. Look closely and you'll see that the tool can be
bearing on a roller or off to one side where it sort of wedges between the
roller and the chain plate.
--
PeteCresswell

Further to my last, have been comparing the cogs on a cassette that has over
2000 miles on it and I know had a problem with chain skip on ONE cog in
particular when I recently put new chain on it ( I always change chains well
within 800-1000 miles usage). The Rohloff device showed no difference
between any of these cogs (I was obviously hoping the one that had been
causing skip would show up as more worn) - the test roller on all cogs
required a gentle push to seat it - so do I interpret "gentle" push as
meaning worn?? I then compared this to the cassette currently fitted to my
bike and found these also required a "gentle" push on the test roller to
seat it.
In short, unless someone can convince me otherwise, this device simply
introduces more guesswork and questions than it actually answers in relation
to cog wear. For those of you, like myself, who are looking for a mechanical
method of gauging cog wear that gives a reasonably clear boundary between
negligible wear versus wear that will lead to skip and chain wear - forget
it!!

"Deep Thought" <[email hidden]> wrote in message
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Quoted message said:

Just acquired the Rohloff HG-IG checker and would like to know if there
are any other users here in order to exchange a couple of usage tips. The
problem is that it would appear to indicate "variable" results and this is
causing me concern as it should be fairly cut-and-dry - e.g. is this cog a
bin-job or not?? The instructions are simple enough - perhaps too simple
because when it refers to the "test roller" being able to "swing" into and
out of the tooth pocket it would seem that there is perhaps some very
small resistance even on very new cassettes - e.g. under 50 miles of
gentle road use - needs to be allowed for. This seems to be at odds with
the literal explanation in the user guide. Is it advisable to place a
litte bit of pressure on the last roller before the "test roller" whilst
the device is under load to make sure it is seated properly WHILST
checking the "swingability" (sorry) of the test roller because this seems
to influence results. Also, I assume this check is pointless on anything
other than a freshly cleaned, spotless cassette (although instructions do
not stipulate). If we are led to believe the test roller should just drop
into the tooth pocket under its own weight without being touched by human
hand then there are going to be an awful lot of people throwing away
perfectly good equipment.

someone said:

Just acquired the Rohloff HG-IG checker and would like to know if
there are any other users here in order to exchange a couple of
usage tips. The problem is that it would appear to indicate
"variable" results and this is causing me concern as it should be
fairly cut-and-dry - e.g. is this cog a bin-job or not?

Holy schmuck! Now they have an instrument to tell you what occurs
naturally and without expense. When you put on a new chain and it
skips under load on a sprocket, you can't use that sprocket. What are
you going to discover with this instrument? Meanwhile, if the
instrument says the sprocket is beyond use, yet it works anyway with
the chain you rare using what do you do now?

Next they'll come up with a tire tread gauge that tells you when your
slicks are worn out, something you might recognize anyway when the
cords start showing.

Jobst Brandt

....agree BUT the point is this device would be of particular use when, for
example, assembling your own cassettes from spare cogs - one would expect
this device to quickly help you determine which cogs are going to work and
which are going to throw you off your bike - I like the simplicity of your
approach but the fact that your theory would probably involve your head
meeting tarmac before you decide to change your rear-end is a bit too
old-school for me. Besides, I am a control freak.

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

Quoted message said:

someone said:

Just acquired the Rohloff HG-IG checker and would like to know if
there are any other users here in order to exchange a couple of
usage tips. The problem is that it would appear to indicate
"variable" results and this is causing me concern as it should be
fairly cut-and-dry - e.g. is this cog a bin-job or not?

Holy schmuck! Now they have an instrument to tell you what occurs
naturally and without expense. When you put on a new chain and it
skips under load on a sprocket, you can't use that sprocket. What are
you going to discover with this instrument? Meanwhile, if the
instrument says the sprocket is beyond use, yet it works anyway with
the chain you rare using what do you do now?

Next they'll come up with a tire tread gauge that tells you when your
slicks are worn out, something you might recognize anyway when the
cords start showing.

Jobst Brandt