Re: [CR] Campy BB cups and other Questions


Example: Framebuilding

Date: Fri, 1 May 2009 06:03:37 -0700
From: Kirke Campbell <passionateyouththing@yahoo.com>
To: Classic Bike <classicrendezvous@bikelist.org>, Thomas Dockery <driveadime@msn.com>
In-Reply-To: <BLU112-W21C04DEA5359F47526578DCD6D0@phx.gbl>
Subject: Re: [CR] Campy BB cups and other Questions


I believe the Pista bottom bracket did not use the thick, rifled cups as there would not be much dirt and crud to rifle away from the bearings on a velodrome. I suppose you could tell for certain by measuring the distance between the bearing races on a Pista spindle?

And according to the Business Cycles reference page, the old Record/Super Record Pista cranks used a 109mm symmetrical spindle. The newer Record Pista cranks use a symmetrical 111mm spindle. but thats only a 1mm difference on the drive side so it should all work out. I guess if you want that *perfect* chainline you could put a freewheel spacer behind the cog?

I actually just installed a set of old 151bcd Campy pista cranks on a new Campy veloce 111mm spindle and everything was cool.

Good luck!

Kirke Campbell
Houston, TX USA


--- On Fri, 5/1/09, Thomas Dockery wrote:


From: Thomas Dockery <driveadime@msn.com> Subject: [CR] Campy BB cups and other Questions To: "Classic Bike" <classicrendezvous@bikelist.org> Date: Friday, May 1, 2009, 1:42 AM

I have reviewed the Campy timeline and am still looking for some insight on when the thicker walled, crud reversal rifling BB cups where introduced. And were these also used on Pista BB sets?

Last question, sort of OT, but not. Has anyone tried to use a newer Campy cartridge BB (early mid 90's) with a on topic Pista crank arms? As I line things up it looks like the spindle length might work (using a road cartridge BB for a Pista application) but I haven't tried it on a frame and haven't tested the flat angles.

Thanks,

Tom Dockery

Los Altos, CA, USA