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PostPosted: Sat May 30, 2020 12:31 pm 
Retro Guru

Joined: Mon Jun 02, 2008 9:22 pm
Posts: 1481
Hi All,

I'm building up a 1996 Cannondale M200 but I don't know what bb spindle width to buy.

The shell is 68mm and I'm guessing one of the usual 113mm, 115mm, or 118mm widths will be fine.

Does anyone have one of these frames they can check the width on before i buy the bb?

Cheers


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PostPosted: Sat May 30, 2020 4:03 pm 
Retro Guru
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Joined: Sun Mar 13, 2011 11:53 pm
Posts: 334
Location: Jersey C.I
It depends on the chainset really, but as a rule 113 should be ok.


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PostPosted: Sat May 30, 2020 7:42 pm 
Retro Guru

Joined: Mon Jun 02, 2008 9:22 pm
Posts: 1481
The chainset is a Sugino triple.


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PostPosted: Sun May 31, 2020 8:53 am 
Retro Guru
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Joined: Sun Mar 13, 2011 11:53 pm
Posts: 334
Location: Jersey C.I
You’ll be fine with a 113 then.


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PostPosted: Mon Jun 08, 2020 6:30 pm 
Retro Guru

Joined: Mon Jun 02, 2008 9:22 pm
Posts: 1481
I fitted a 115 and the drive side is fine but the non drive side is too short. The non drive side crank is too near the stay.

I measure the bb shell at 68mm so i have the right width shell. All I can think is that the left and right crank arms aren't a pair.


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PostPosted: Tue Jun 09, 2020 3:12 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 10034
Location: New Forest, UK
What do you mean by too near? 2-3mm is enough. Not all BBs are symmetric either. The 113mm one definitely is.


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PostPosted: Wed Jun 10, 2020 9:22 am 
Retro Guru

Joined: Mon Jun 02, 2008 9:22 pm
Posts: 1481
Both cranks aren’t evenly spaced from the chainstays. The drive side is 9mm and the non drive side is 3mm.

I tried some older LX cranks and they are spaced similarly.

I’ll try a modern hollow tech to see if I can work out whats happening.


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