Identifying the crank

On Mon, 29 Mar 2004 11:09:36 +1000, "DRS" <[email hidden]>

Quoted message said:

My hybrid has a Shimano crank but I'm not sure exactly
which type it is, so my question is how do I identify which
it is? I want to change the big ring from 42 to 44.

On the inside of the crank should be some stamped markings.
You can look through charts like the following and possibly
locate the model. If it is newer, it should be easy for a
bike shop to tell you from the markings...

datenbanken.freepage.decgiOpen ↗
bin/feets/freepage_ext/41030x030A/rewrite/traut/SHIMANO.html

fa-fa-Open ↗
technik.adfc.de/Hersteller/Shimano/Gruppen80.html

You can also go to a chart like this on Brown's web site-

fa-fa-Open ↗
technik.adfc.de/Hersteller/Shimano/Gruppen80.html

Use the C-C measurement to learn the BCD, then you can order
rings to fit.

Dan Daniel <[email hidden]> wrote in message
[email hidden]

Quoted message said:

DRS said:

My hybrid has a Shimano crank but I'm not sure exactly
which type it is, so my question is how do I identify
which it is? I want to change the big ring from 42 to 44.

On the inside of the crank should be some stamped
markings. You can look through charts like the following
and possibly locate the model. If it is newer, it should
be easy for a bike shop to tell you from the markings...

Ah, most excellent. It's a FC-MC20 (apparently too new for
the charts you linked to). FWIW, this is it here (although
mine is silver rather than black):
wiggle.co.ukwiggle.co.ukOpen ↗.

Now, next question. It's a 4-arm design, which narrows my
choices somewhat. Nashbar seems to give me three options:

1. Shimano SH-CR570 (for LX) 4-bolt 44T for $29.95, which
seems to be the best fit.

nashbar.comprofile.cfmOpen ↗
1032&brand=&sku=2924&storetype=&estoreid=&pagename=

2. Nashbar Replacement Chainring 44/104 for $19.95 but it
doesn't say how many bolts it has.

nashbar.comprofile.cfmOpen ↗
1032&brand=&sku=9279&storetype=&estoreid=&pagename=

3. Shimano SH-CR750 (for XT) 4-bolt 44T for $54.5, which
seems gross overkill for a hybrid.

nashbar.comprofile.cfmOpen ↗
1032&brand=&sku=6486&storetype=&estoreid=&pagename=

So, if it was 4-bolts I could go with option 2 (Nashbar),
otherwise option 1 (Shimano LX), yes?

--

"I'm proud that I live in a country where witnessing two
hours of bloody, barbarous torture in gloating detail is
considered indicia of religious piety, whereas a mere second
gazing upon a woman's breast is cause for outraged
apoplexy." Betty Bowers,
bettybowers.commelgibsonpassion.htmlOpen ↗

On Mon, 29 Mar 2004 11:53:25 +1000, "DRS" <[email hidden]>

Quoted message said:

Dan Daniel <[email hidden]> wrote in message
[email hidden]

Quoted message said:

DRS said:

My hybrid has a Shimano crank but I'm not sure
exactly which type it is, so my question is how do I
identify which it is? I want to change the big ring
from 42 to 44.

On the inside of the crank should be some stamped
markings. You can look through charts like the following
and possibly locate the model. If it is newer, it should
be easy for a bike shop to tell you from the markings...

Ah, most excellent. It's a FC-MC20 (apparently too new for
the charts you linked to). FWIW, this is it here (although
mine is silver rather than black):
wiggle.co.ukwiggle.co.ukOpen ↗.

Alivio-

bike.shimano.comtech info b.aspOpen ↗
&pg=Alivio

104 bolt circle.

Quoted message said:

Now, next question. It's a 4-arm design, which narrows my
choices somewhat. Nashbar seems to give me three options:

1. Shimano SH-CR570 (for LX) 4-bolt 44T for $29.95, which
seems to be the best fit.

nashbar.comprofile.cfmOpen ↗
=1032&brand=&sku=2924&storetype=&estoreid=&pagename=

2. Nashbar Replacement Chainring 44/104 for $19.95 but it
doesn't say how many bolts it has.

nashbar.comprofile.cfmOpen ↗
=1032&brand=&sku=9279&storetype=&estoreid=&pagename=

3. Shimano SH-CR750 (for XT) 4-bolt 44T for $54.5, which
seems gross overkill for a hybrid.

nashbar.comprofile.cfmOpen ↗
=1032&brand=&sku=6486&storetype=&estoreid=&pagename=

So, if it was 4-bolts I could go with option 2 (Nashbar),
otherwise option 1 (Shimano LX), yes?

The LX is 104 BCD?

Look at the Sheldon Brown chart to see if there even is a
104 5-bolt standard. If not, then consider the Nashbar to
be 4 bolts.

The issue for some people will be if it has the proper pins
and ramps and whatever else they say you need to shift. You
can shift perfectly well without that stuff but it might
take more attention than you are used to.

When I went looking for Shimano chainrings last year, the
impression I got from bike shops was that Shimano wants you
to buy a new crankset and makes the rings hard to get and
overpriced.

I found some Sun Ringle rings on close out, minor ramping
and no pinning. That setup is the best shifting compact
crankset I have used. I'll never pay extra for pins and
ramps if I can help it.

I'd go for Nashbar, or better yet, call local shops. They
might have some Sugino or Vuelta rings. The Nashbars
probably came off of the same assembly line.

On Mon, 29 Mar 2004 11:09:36 +1000, "DRS" <[email hidden]>

may have said:

My hybrid has a Shimano crank but I'm not sure exactly
which type it is, so my question is how do I identify which
it is? I want to change the big ring from 42 to 44.

It doesn't really matter. Measure the bolt circle diameter,
and count the bolts...assuming that there *are* bolts.
That's all you really need to know in order to get a
different ring.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

On Mon, 29 Mar 2004 11:53:25 +1000, "DRS" <[email hidden]>

may have said:

Now, next question. It's a 4-arm design, which narrows my
choices somewhat. Nashbar seems to give me three options:

1. Shimano SH-CR570 (for LX) 4-bolt 44T for $29.95, which
seems to be the best fit.

nashbar.comprofile.cfmOpen ↗
=1032&brand=&sku=2924&storetype=&estoreid=&pagename=

2. Nashbar Replacement Chainring 44/104 for $19.95 but it
doesn't say how many bolts it has.

nashbar.comprofile.cfmOpen ↗
=1032&brand=&sku=9279&storetype=&estoreid=&pagename=

3. Shimano SH-CR750 (for XT) 4-bolt 44T for $54.5, which
seems gross overkill for a hybrid.

nashbar.comprofile.cfmOpen ↗
=1032&brand=&sku=6486&storetype=&estoreid=&pagename=

So, if it was 4-bolts I could go with option 2 (Nashbar),
otherwise option 1 (Shimano LX), yes?

Looks right.

Personally, for the $10 difference, I might opt for the
Shimano, but lots of folks use the Nashbar sprockets without
any complaints.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

Dan Daniel <[email hidden]> wrote in message
[email hidden]

Quoted message said:

On Mon, 29 Mar 2004 11:53:25 +1000, "DRS"
[email hidden]

[...]

Quoted message said:

Quoted message said:

Ah, most excellent. It's a FC-MC20 (apparently too new
for the charts you linked to). FWIW, this is it here
(although mine is silver rather than black):
wiggle.co.ukwiggle.co.ukOpen ↗.

Alivio-

bike.shimano.comtech info b.aspOpen ↗
pg=Alivio

104 bolt circle.

OK. The Alivio used to be FC-MC18, but that's
definitely the one.

Quoted message said:

Quoted message said:

Now, next question. It's a 4-arm design, which narrows my
choices somewhat. Nashbar seems to give me three options:

1. Shimano SH-CR570 (for LX) 4-bolt 44T for $29.95, which
seems to be the best fit.

[...]

Quoted message said:

Quoted message said:

So, if it was 4-bolts I could go with option 2 (Nashbar),
otherwise option 1 (Shimano LX), yes?

The LX is 104 BCD?

Yes. Seeshimano.com/mtb/DeoreLX/componenttemplate.asp?partnumber=FC-
M571 under Specifications.

[...]

Quoted message said:

When I went looking for Shimano chainrings last year, the
impression I got from bike shops was that Shimano wants
you to buy a new crankset and makes the rings hard to get
and overpriced.

That seems to be true. Not so long ago I read in aus.bicycle
that Shimano chainrings were no longer individually
available, so finding them on the Nashbar site was quite
wonderful.

Quoted message said:

I found some Sun Ringle rings on close out, minor ramping
and no pinning.

Sorry, you've lost me.

[...]

Quoted message said:

I'd go for Nashbar, or better yet, call local shops. They
might have some Sugino or Vuelta rings. The Nashbars
probably came off of the same assembly line.

I've sent Nashbar an email asking about compatibility with
the FC-MC20. If their 44/104 is OK I'll certainly buy it, I
only want to change one ring and buying a whole new crankset
would be ridiculous.

--

"I'm proud that I live in a country where witnessing two
hours of bloody, barbarous torture in gloating detail is
considered indicia of religious piety, whereas a mere second
gazing upon a woman's breast is cause for outraged
apoplexy." Betty Bowers,
bettybowers.commelgibsonpassion.htmlOpen ↗

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

Quoted message said:

Dan Daniel <[email hidden]> wrote in message
[email hidden]

Quoted message said:

On Mon, 29 Mar 2004 11:53:25 +1000, "DRS"
[email hidden]

<snip>

Quoted message said:

I've sent Nashbar an email asking about compatibility with
the FC-MC20.

If

Quoted message said:

their 44/104 is OK I'll certainly buy it, I only want to
change one ring

and

Quoted message said:

buying a whole new crankset would be ridiculous.

You're right, the price difference between the chainrings
and the entire crank is ridiculous, and wasteful to buy a
crankset just to replace 1 ring. However, consider this ...
your inner and middle rings will probably be the ones to
wear out the fastest, how much will it cost when you go to
replace them? If you buy a new crankset with compatible
bolt patterns, then you'll have extra chainrings for when
those wear out. If you look, you might find a good deal on
a crankset for only a few bucks more than the individual
chainring you want to replace ... and you'll have spares
for later on.

C.Q.C.

DRS said:

My hybrid has a Shimano crank but I'm not sure exactly
which type it is, so my question is how do I identify
which it is? I want to change the big ring from 42 to 44.

On the inside of tghe arm you'll find a product number, in
the pattern "FC-7400" or "FC-M510".

Shimano is unique in our industry with that thoughtful
habit.

--
Andrew Muzi www.yellowjersey.org Open every day since 1
April, 1971

Q. <LostVideos-AT-hotmail.com> wrote in message U6KdnYFDN4I4VfrdRVn-
[email hidden]

Quoted message said:

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

[...]

Quoted message said:

Quoted message said:

I've sent Nashbar an email asking about compatibility
with the FC-MC20. If their 44/104 is OK I'll certainly
buy it, I only want to change one ring and buying a whole
new crankset would be ridiculous.

You're right, the price difference between the chainrings
and the entire crank is ridiculous, and wasteful to buy a
crankset just to replace 1 ring. However, consider this
... your inner and middle rings will probably be the ones
to wear out the fastest, how much

I don't know how you figure that. I almost never use my
inner ring and if someone stole it it'd probably take me a
few weeks to notice. I do use the middle ring but that's
steel. I spend most of my riding life on the big ring, which
is why it being a 42T is annoying me so much, and anyway
it's aluminium so the odds are it's going to go first.

Quoted message said:

will it cost when you go to replace them? If you buy a new
crankset with compatible bolt patterns, then you'll have
extra chainrings for when those wear out. If you look, you
might find a good deal on a crankset for only a few bucks
more than the individual chainring you want to replace ...
and you'll have spares for later on.

Cranksets cost more here than they do in the States. The
base Deore crankset is about AUD135 whereas the Nashbar
44/104 is about AUD27 plus postage. I've got plans for that
money. :-)

--

"I'm proud that I live in a country where witnessing two
hours of bloody, barbarous torture in gloating detail is
considered indicia of religious piety, whereas a mere second
gazing upon a woman's breast is cause for outraged
apoplexy." Betty Bowers,
bettybowers.commelgibsonpassion.htmlOpen ↗

Dan Daniel <[email hidden]> wrote in message
[email hidden]

[...]

Quoted message said:

Look at the Sheldon Brown chart to see if there even is a
104 5-bolt standard. If not, then consider the Nashbar to
be 4 bolts.

I just got an email fron Nashbar saying they're 5-bolt.

I got another one saying they only use FedEx for
international orders. <sigh> Shipping is usually the deal
breaker for international orders and FedEx are stupidly
expensive.

--

"I'm proud that I live in a country where witnessing two
hours of bloody, barbarous torture in gloating detail is
considered indicia of religious piety, whereas a mere second
gazing upon a woman's breast is cause for outraged
apoplexy." Betty Bowers,
bettybowers.commelgibsonpassion.htmlOpen ↗

Dan Daniel said:

The LX is 104 BCD?

Look at the Sheldon Brown chart to see if there even is a
104 5-bolt standard.

Nope.

Quoted message said:

If not, then consider the Nashbar to be 4 bolts.

Then again, if he found the information on my site useful,
he might want to consider buying a chainring from me... ;-)

sheldonbrown.com104Open ↗

Sheldon "Shameless Commerce" Brown +-------------------------------------------------
+
| Search the Quality Bicycle Products Catalog | and order
| on line: | sheldonbrown.comqualityOpen ↗ |
+-------------------------------------------------+ Harris
Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX
617-244-1041 harriscyclery.comharriscyclery.comOpen ↗ Hard-to-find parts
shipped Worldwide captainbike.comcaptainbike.comOpen ↗
sheldonbrown.comsheldonbrown.comOpen ↗

Sheldon Brown said:

Dan Daniel said:

The LX is 104 BCD?

Look at the Sheldon Brown chart to see if there even is a
104 5-bolt standard.

Nope.

Quoted message said:

If not, then consider the Nashbar to be 4 bolts.

Then again, if he found the information on my site useful,
he might want to consider buying a chainring from me... ;-)

sheldonbrown.com104Open ↗

Sheldon "Shameless Commerce" Brown

Offer him shipping to Australia other than FedEx and he
should go for
it....

Sheldon Brown <[email hidden]> wrote in message
[email hidden]

[...]

Quoted message said:

Then again, if he found the information on my site
useful, he might want to consider buying a chainring from
me... ;-)

sheldonbrown.com104Open ↗

Heh. I may buy some other items from you but not this one.
Believe it or not, a kind person who has an "unused,
unwanted 44T, 104 PCD, 4-bolt steel Shimano Deore chainring"
has offered it to me! O frabjous day! Callooh! Callay! I
admit to being curious as to its being steel rather than
aluminium but it's for an overloaded hybrid anyway. It's one
gift horse I'll not look in the mouth.

--

"I'm proud that I live in a country where witnessing two
hours of bloody, barbarous torture in gloating detail is
considered indicia of religious piety, whereas a mere second
gazing upon a woman's breast is cause for outraged
apoplexy." Betty Bowers,
bettybowers.commelgibsonpassion.htmlOpen ↗

Dan Daniel <[email hidden]> wrote in message
[email hidden]

[...]

Quoted message said:

Offer him shipping to Australia other than FedEx and he
should go for
it....

Sheldon uses US post, which automatically puts him in my
list of Sites Worth Bothering With, even though he charges
USD5.00 extra for the privlege of having one of his minions
take 30 seconds to fill out the customs compliance form.

--

"I'm proud that I live in a country where witnessing two
hours of bloody, barbarous torture in gloating detail is
considered indicia of religious piety, whereas a mere second
gazing upon a woman's breast is cause for outraged
apoplexy." Betty Bowers,
bettybowers.commelgibsonpassion.htmlOpen ↗