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PostPosted: Sun Oct 20, 2013 12:05 am 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7563
Location: Manchester
I saw a square taper BB today that looked to have a different taper, I tried it in some cranks and the taper was different, it still wobbled when it was pushed fully into the crank.

Looking on Sheldon Browns site JIS and ISO both were 2 degree.
So what could this have been?


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PostPosted: Sun Oct 20, 2013 12:32 am 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 8247
Location: Cumbria
Suntour were a bit off the wall in the early days :)

TA / Stronglight ?

Shaun


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PostPosted: Sun Oct 20, 2013 7:37 am 
Retro Guru

Joined: Tue Jun 03, 2008 4:31 pm
Posts: 743
It is also length meaning 1 bottoms on the other and in reverse 1 doesn't always go on properly


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PostPosted: Mon Oct 21, 2013 4:32 pm 
Old School Grand Master
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Joined: Wed Jul 25, 2007 2:04 pm
Posts: 3364
Location: Completely in the dark, thanks to me good mate Terry....
Didn't the BB units on the original Viscount Aerospace models have an odd quirk like that? Or was that the crank arm tapers?

David


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PostPosted: Mon Oct 21, 2013 6:48 pm 
rBoTM Winner
rBoTM Winner
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Joined: Wed Dec 12, 2012 10:18 pm
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Location: California
Early Dura-Ace had its own taper as well


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PostPosted: Mon Oct 21, 2013 7:37 pm 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7563
Location: Manchester
Possibly one of the above then!
I wish I'd had a proper look at it now!


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PostPosted: Tue Oct 22, 2013 11:05 pm 
Retrobike Sponsor
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Joined: Sat May 22, 2010 10:33 pm
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Location: Suffolk
Did early campag have there own taper as well.


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