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Old 08-18-07, 05:36 PM   #1
pj7
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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:
http://www.parktool.com/images_inc/r...help/bb228.jpg

So is it possible that the engraving is wrong or am I missing something?
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Old 08-18-07, 07:04 PM   #2
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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.
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Old 08-18-07, 07:14 PM   #3
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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.
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Old 08-18-07, 07:26 PM   #4
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2

http://techdocs.shimano.com/media/te...9830612973.pdf

http://techdocs.shimano.com/media/te...9830612974.pdf
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Old 08-19-07, 09:00 AM   #5
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Based on these two documents, the FC M440 came in both square taper and Octalink bottom bracket types despite having the same model number. Surprising.
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Old 08-19-07, 09:26 AM   #6
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Based on these two documents, the FC M440 came in both square taper and Octalink bottom bracket types despite having the same model number. Surprising.
This deserves a haha.
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Old 08-19-07, 11:32 AM   #7
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This deserves a haha.
More like a dee-dee-dee.
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