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Cycling > Technical aspects > Re: External-be...
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Re: External-bearing BBs?

by jobst.brandt@[EMAIL PROTECTED] May 14, 2008 at 02:06 AM

Someone wrote:

>>>> Quick question on external-bearing BB's: Are they all compatible?
>>>> Are the shaft diameters and spacing of these integrated cranks
>>>> the same? =C2=A0I haven't worked on enough of these to find out by
>>>> myself yet. =C2=A0I have a ****mano FC-R700 crankset, and someone nea=
r
>>>> me is selling a set of Zipp ceramic external-bearing BB for
>>>> cheap, but need to know if the two are compatible before putting
>>>> my money down.

>>> Don't know much about Zipp bearings, but if you want the ultimate
>>> in external bearing BB's, check out the new Phil Wood:

=C2=A0http://www.philwood.com/BB-Outboard%20Set.htm

>> I don't see what holds the spindle and what sort of spindle fits
>> that assembly. =C2=A0I also doubt what the free-fit aluminum sleeve an=
d
>> a free fit (no taper or press) spindle that seems to fit in that
>> sleeve won't fret giving a grinding squeaking BB. =C2=A0I think PW wou=
ld
>> do better with a cross section view of the assembly than a ****ny
>> photograph with inadequate words to explain what the selected view
>> shows.

> OK, presuming the outboard bearing is from the Zipp VumaQuad
> crankset, how about checking out the installation manual, which does
> show the spindle interface:

 http://www.zipp.com/****tals/0/Products/Cranks/Compact_Crank_Manual.pdf

Oh, this shows the Isis crank interface, which is dead anyway because
it is a flawed design based on the wrong assumptions about
steel-to-aluminum interfaces.  We have also read about spindle
failures, here in this newsgroup.  However, the endless pdf does not
show what locates the spindle in the bearings, radially or axially.
--=20
Jobst Brandt
 




 59 Posts in Topic:
External-bearing BBs?
Joao de Souza <no@[EMA  2008-05-12 16:29:04 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-12 13:49:35 
Re: External-bearing BBs?
jobst.brandt@[EMAIL PROTE  2008-05-12 21:28:50 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-12 17:54:50 
Re: External-bearing BBs?
jobst.brandt@[EMAIL PROTE  2008-05-13 00:10:14 
Re: External-bearing BBs?
Hank <hank@[EMAIL PROT  2008-05-12 14:17:05 
Re: External-bearing BBs?
Nicholas Grieco <nicho  2008-05-12 15:46:58 
Re: External-bearing BBs?
jobst.brandt@[EMAIL PROTE  2008-05-13 00:03:55 
Re: External-bearing BBs?
Chalo <chalo.colina@[E  2008-05-12 19:08:02 
Re: External-bearing BBs?
Ryan Cousineau <rcousi  2008-05-13 03:10:34 
Re: External-bearing BBs?
Chalo <chalo.colina@[E  2008-05-12 20:00:48 
Re: External-bearing BBs?
Chalo <chalo.colina@[E  2008-05-13 01:11:36 
Re: External-bearing BBs?
jim beam <spamvortex@[  2008-05-13 05:49:42 
Re: External-bearing BBs?
Ryan Cousineau <rcousi  2008-05-14 02:36:33 
Re: External-bearing BBs?
"Qui si parla Campag  2008-05-13 05:31:58 
Re: External-bearing BBs?
"KnowWhen2HoldemKnow  2008-05-19 22:45:00 
Re: External-bearing BBs?
Andre Jute <fiultra1@[  2008-05-13 06:39:34 
Re: External-bearing BBs?
Chalo <chalo.colina@[E  2008-05-13 09:17:55 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-13 16:09:33 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-13 10:09:57 
Re: External-bearing BBs?
jobst.brandt@[EMAIL PROTE  2008-05-14 02:06:59 
Re: External-bearing BBs?
jobst.brandt@[EMAIL PROTE  2008-05-14 16:20:57 
Re: External-bearing BBs?
Lou Holtman <lholditni  2008-05-14 20:15:35 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-13 10:32:32 
Re: External-bearing BBs?
Chalo <chalo.colina@[E  2008-05-13 10:58:38 
Re: External-bearing BBs?
Andre Jute <fiultra1@[  2008-05-13 13:56:23 
Re: External-bearing BBs?
Hank <hank@[EMAIL PROT  2008-05-13 18:02:14 
Re: External-bearing BBs?
Ozark Bicycle <bicycle  2008-05-13 20:17:30 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-14 10:44:05 
Re: External-bearing BBs?
Michael Press <rubrum@  2008-05-14 11:55:03 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-14 14:14:44 
Re: External-bearing BBs?
landotter <landotter@[  2008-05-14 12:05:13 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-14 12:17:10 
Re: External-bearing BBs?
Michael Press <rubrum@  2008-05-14 17:32:10 
Re: External-bearing BBs?
Chalo <chalo.colina@[E  2008-05-14 12:23:18 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-14 12:36:56 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-14 15:04:09 
Re: External-bearing BBs?
Ryan Cousineau <rcousi  2008-05-15 01:31:43 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-14 22:49:24 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-14 13:01:18 
Re: External-bearing BBs?
landotter <landotter@[  2008-05-14 13:03:28 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-14 16:08:18 
Re: External-bearing BBs?
bfd <bfd853@[EMAIL PRO  2008-05-14 13:23:39 
Re: External-bearing BBs?
Frank Krygowski <frkry  2008-05-14 14:17:38 
Re: External-bearing BBs?
landotter <landotter@[  2008-05-14 14:59:36 
Re: External-bearing BBs?
Andre Jute <fiultra1@[  2008-05-14 15:27:26 
Re: External-bearing BBs?
landotter <landotter@[  2008-05-14 15:34:29 
Re: External-bearing BBs?
"Clive George"   2008-05-14 23:49:38 
Laying to rest myths about Irish roads Re: External-bearing BBs?
Andre Jute <fiultra1@[  2008-05-14 16:27:01 
Re: Laying to rest myths about Irish roads Re: External-bearing
oronkain@[EMAIL PROTECTED  2008-05-15 12:28:26 
Re: External-bearing BBs?
Hank <hank@[EMAIL PROT  2008-05-14 17:17:50 
Re: External-bearing BBs?
landotter <landotter@[  2008-05-14 19:21:06 
Re: External-bearing BBs?
Jay Beattie <jbeattie@  2008-05-14 21:24:31 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-15 10:29:38 
Re: External-bearing BBs?
daveornee <daveornee.3  2008-05-16 03:02:43 
Re: External-bearing BBs?
A Muzi <am@[EMAIL PROT  2008-05-15 13:56:33 
Re: External-bearing BBs?
Michael Press <rubrum@  2008-06-10 21:11:31 
Re: External-bearing BBs?
Frank Krygowski <frkry  2008-05-15 09:00:08 
Re: External-bearing BBs?
velodancer <commerce48  2008-05-21 21:39:07 

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tan12V112 Thu Aug 28 4:35:25 CDT 2008.