Was there ever a 44t Biopace OUTER ring?

Bruce Lange said:

I want to set up a 44/36 Shimano Biopace (original, not BiopaceII) 110 BCD
double crank.

I have a few 44t Biopace chainrings around, but they're all intended as
middle/inner rings.

Did Shimano ever make a 44t Biopace chainring intended as a big ring?
Anybody have one?

I don't think so. IIRC, Biopace and Biopace II outer rings only came in
46 and 48 teeth. If you want "close", you could try a 46/38
combination.

Jeff

On 18 Aug 2005 20:19:28 -0700, "JeffWills" <[email hidden]>

Quoted message said:

---------------- clip

Quoted message said:

I don't think so. IIRC, Biopace and Biopace II outer rings only came in
46 and 48 teeth. If you want "close", you could try a 46/38
combination.

Jeff

----------------

Nonsense. I have two Shimano Biopaqce 53T outers

Rollen

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In article <[email hidden]>,

Quoted message said:

On 18 Aug 2005 20:19:28 -0700, "JeffWills" <[email hidden]>

Quoted message said:

---------------- clip

Quoted message said:

I don't think so. IIRC, Biopace and Biopace II outer rings only came in
46 and 48 teeth. If you want "close", you could try a 46/38
combination.

Jeff

----------------

Nonsense. I have two Shimano Biopaqce 53T outers

_ With 110 spacing?

_ Booker C. Bense

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Bruce Lange said:

I want to set up a 44/36 Shimano Biopace (original, not BiopaceII) 110 BCD
double crank.

I have a few 44t Biopace chainrings around, but they're all intended as
middle/inner rings.

Did Shimano ever make a 44t Biopace chainring intended as a big ring?

No. In the 110 Bolt Circle Diameter they did 46, 48 (most common) and
50 (quite rare.)

I would expect you could _use_ a 44 as an outer with no problem though.

Keep it facing the normal direction. The counterbores in the mounting
holes will then be on the wrong side, but that's no biggie.

Sheldon "http://sheldonbrown.com/biopace" Brown
+-------------------------------------------------------------+
| I have never let my schooling interfere with my education. |
| --Mark Twain |
+-------------------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

Booker C. Bense said:

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In article <[email hidden]>,

Quoted message said:

On 18 Aug 2005 20:19:28 -0700, "JeffWills" <[email hidden]>

Quoted message said:

---------------- clip

Quoted message said:

I don't think so. IIRC, Biopace and Biopace II outer rings only came in
46 and 48 teeth. If you want "close", you could try a 46/38
combination.

Jeff

----------------

Nonsense. I have two Shimano Biopaqce 53T outers

_ With 110 spacing?

_ Booker C. Bense

- - - - - - - - -

Nope, 130.

Rollen

Quoted message said:

Quoted message said:

Quoted message said:

On 18 Aug 2005 20:19:28 -0700, "JeffWills" <[email hidden]>
wrote:

>
---------------- clip
>I don't think so. IIRC, Biopace and Biopace II outer rings only came in
>46 and 48 teeth. If you want "close", you could try a 46/38
>combination.
>
>Jeff
----------------

Nonsense. I have two Shimano Biopaqce 53T outers

_ With 110 spacing?

_ Booker C. Bense

- - - - - - - - -

Nope, 130.

Rollen

See, if you'd read Bruce's original post, you'd have know that he
wanted 110 bolt circle, which meant that 53 tooth Biopace rings weren't
relevant.

I can understand (sort of) why you'd want to find a 44 tooth outer
ring- but putting a "middle" on the outside isn't a big deal. I've done
it with round rings and it works fine. *Finding* a 44 tooth Biopace
ring may be more difficult. Perhaps Sheldon has one- they're not listed
on the Harris Cyclery web page (probably with good reason).

A much more expensive alternative is a custom chainring from Highpath
Engineering: http://www.highpath.co.uk/cycles/products/eggs/01.html

Jeff