How can this be? splined/square tapered
08-18-07, 05:36 PM
#1
On Sabbatical
Thread Starter
Join Date: Feb 2005
Posts: 1,543
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
How can this be? splined/square tapered
My crankset is the Shimano FC-M440 (engraved right on the crank arm) and everything I have found tells me that this is a square tapered crankset.
But when I take the crank bolt out it looks nothing like a Sq-Tapered deal, in fact it looks almost exactly like this splined Octalink pic I found at the Park Tool site:
https://www.parktool.com/images_inc/r...help/bb228.jpg
So is it possible that the engraving is wrong or am I missing something?
But when I take the crank bolt out it looks nothing like a Sq-Tapered deal, in fact it looks almost exactly like this splined Octalink pic I found at the Park Tool site:
https://www.parktool.com/images_inc/r...help/bb228.jpg
So is it possible that the engraving is wrong or am I missing something?
08-18-07, 07:04 PM
#2
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2026 Post(s)
Likes: 0
Liked 1,096 Times
in
742 Posts
When you removed the crank fixing bolt, how big were the threads on it? If they were 8 mm it's a square taper. If they are 15 mm, it's an Octalink.
08-18-07, 07:14 PM
#3
On Sabbatical
Thread Starter
Join Date: Feb 2005
Posts: 1,543
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
14.91mm by my old calipers. I was already thinking it was octalink because of the 8 splines I see when I take off the crank bolt and look in there.
I wonder how this can be though, I can find nothing online about the FC-M440 crankset being octalink, everything I see claims that crankset to be square tapered, and I know I'm not reading the numbers incorrectly.
I wonder how this can be though, I can find nothing online about the FC-M440 crankset being octalink, everything I see claims that crankset to be square tapered, and I know I'm not reading the numbers incorrectly.
08-19-07, 09:00 AM
#5
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2026 Post(s)
Likes: 0
Liked 1,096 Times
in
742 Posts
