shimano roadbike chainrings

Hello all!

I've just recently upgraded my roadbike from a 16
speed (52,39 front,
12-21 rear) to an 18 speed Ultegra (53,39 front,
12-23 rear).

I'm finding that the 23 is useless (never ride on
hills that steep), and
its a big jump between chainrings. A 44 tooth would
be more practical
for the riding I am doing (might actually use the
23!), even if 44 does
not exist, a 42 would still be an improvement.

Does anyone know what size Ultegra chainrings come
in? and if any
on-line bike shops have them (in Australia). So many I have typed
`chainring' into a
search and come up with nothing. Even the shimano
website couldnt tell
me. Also - are other Shimano chainrings compatible (eg. Dura-ace)

Paul

Does anyone know what size Ultegra chainrings come
in?

I know that there is a 42t Ultegra chainring. I also know that there exists a 50t Shimano
105 outer chainring, but I've never seen one.

Also - are other Shimano chainrings compatible (eg. Dura-ace)

I know the Dura-ace 9 speed chainrings will fit your Ultegra cranks.

Dave

On Sun, 05 Oct 2003 01:07:52 +0000, Paul Jones wrote:

Hello all!

I've just recently upgraded my roadbike from a 16 speed (52,39 front,
12-21 rear) to an 18 speed Ultegra (53,39 front, 12-23 rear).

I'm finding that the 23 is useless (never ride on hills that steep), and
its a big jump between chainrings.

You can tell the difference in the "jump"*between chainrings of a 53/39
versus a 52/39?

*A 44 tooth would be more practical
for the riding I am doing (might actually use the 23!), even if 44 does
not exist, a 42 would still be an improvement.

Inner ring, or outer?


Does anyone know what size Ultegra chainrings come in? and if any
on-line bike shops have them (in Australia). So many I have typed
`chainring' into a
search and come up with nothing. Even the shimano website couldnt tell
me. Also - are other Shimano chainrings compatible (eg. Dura-ace)

The only obstruction to "compatibility" is the diameter of the bolt
circle. Shimano are all 130. Look for that, not the model number.

--

David L. Johnson

__o | If all economists were laid end to end, they would not reach a
_`\(,_ | conclusion. -- George Bernard Shaw
(_)/ (_) |

You should move to a place that has hills then.


nospam wrote:

Hello all!

I've just recently upgraded my roadbike from a 16
speed (52,39 front,
12-21 rear) to an 18 speed Ultegra (53,39 front,
12-23 rear).

I'm finding that the 23 is useless (never ride on
hills that steep), and
its a big jump between chainrings. A 44 tooth would
be more practical
for the riding I am doing (might actually use the
23!), even if 44 does
not exist, a 42 would still be an improvement.

--
Mark Wolfe http://www.wolfenet.org
gpg fingerprint = 42B6 EFEB 5414 AA18 01B7 64AC EF46 F7E6 82F6 8C71
I cannot and will not cut my conscience to fit this year's fashions.
-- Lillian Hellman

"David L. Johnson" wrote:

On Sun, 05 Oct 2003 01:07:52 +0000, Paul Jones wrote:

I've just recently upgraded my roadbike from a 16 speed (52,39 front,
12-21 rear) to an 18 speed Ultegra (53,39 front, 12-23 rear).

I'm finding that the 23 is useless (never ride on hills that steep), and
its a big jump between chainrings.

You can tell the difference in the "jump" between chainrings of a 53/39
versus a 52/39?

He didn't even begin to say that. He just said the jump is big, which it is.

A 44 tooth would be more practical
for the riding I am doing (might actually use the 23!), even if 44 does
not exist, a 42 would still be an improvement.

44t tooth rings are available for 130 BCD. See

http://www.sheldonbrown.com/harris/chainrings.html#130

Inner ring, or outer?

Why not stop and think for a moment? If he says if he might even use his 23
(his biggest cog) with a 44t, then he is obviously talking inner ring.

Does anyone know what size Ultegra chainrings come in? and if any
on-line bike shops have them (in Australia). So many I have typed
`chainring' into a
search and come up with nothing. Even the shimano website couldnt tell
me. Also - are other Shimano chainrings compatible (eg. Dura-ace)

The only obstruction to "compatibility" is the diameter of the bolt
circle. Shimano are all 130. Look for that, not the model number.

Paul Jones schreef ...

Does anyone know what size Ultegra chainrings come
in? and if any
on-line bike shops have them (in Australia). So many I have typed
`chainring' into a
search and come up with nothing. Even the shimano
website couldnt tell
me. Also - are other Shimano chainrings compatible (eg. Dura-ace)

You'd better find someone who stocks TA chainrings: they're better (as
in: more durable) and far cheaper than Shimanos. And they come in almost
*every* conceivable size, which is not the case with the Big S. Take a
look at http://www.peterwhitecycles.com/chainrings.asp, in the "130 mm"
section.

--
Regards,
Marten

Marten Hoffmann wrote:
: You'd better find someone who stocks TA chainrings: they're better (as
: in: more durable) and far cheaper than Shimanos. And they come in almost
: *every* conceivable size, which is not the case with the Big S. Take a
: look at http://www.peterwhitecycles.com/chainrings.asp, in the "130 mm"
: section.

http://www.xxcycle.com/

select chainrings, specialites ta from browse, hit go and look for
"Alize" which are 130bcd.

here it helps to speak a little french (or not be an idiot, actually).
where it says "Alize 42/46-2" the 42/46 means 42 to 46 and the -2 means
"intermediare" or middle chainring. -1 is interior (double or triple) and
-3 is exterior. the colours are red, black, blue and silver. most rings
are $28 to $32.

i've bought chainrings from them a couple of times. they aren't all that
fast but they have a good stock of colours and sizes. and shipping from
france is reasonable.
--
david reuteler

On Mon, 06 Oct 2003 12:30:59 +0000, gwhite wrote:

I'm finding that the 23 is useless (never ride on hills that steep),
and its a big jump between chainrings.

You can tell the difference in the "jump" between chainrings of a 53/39
versus a 52/39?

He didn't even begin to say that. He just said the jump is big, which it
is.

Well, he was used to the 52/39, and now complains about how big the 53/39
jump is...

--

David L. Johnson

__o | As far as the laws of mathematics refer to reality, they are not
_`\(,_ | certain, and as far as they are certain, they do not refer to
(_)/ (_) | reality. -- Albert Einstein