[CR]Re: Pino BB *Threading*

(Example: Framebuilders:Alex Singer)

Date: Sun, 20 Aug 2006 17:07:00 -0400
From: "Harvey M Sachs" <sachshm@cox.net>
To: terminaut@gmail.com, Classic Rendezvous <classicrendezvous@bikelist.org>, Ken Sanford <kanford@comcast.net>
Subject: [CR]Re: Pino BB *Threading*


just a couple of little notes, and thanks for the pix, Tam. 1) wrt your original post about it spinning so easily, I'd guess that the cartridge spins much more freely when you hold the spindle than vice versa. Just rotational inertia of the part at the greater radius. More importantly, I was always warned that unloaded free spin was a better measure of lube viscosity than an indicator of drag under load.

2) Don't you just know there were some dumb klutzes who got a frame which didn't have the center of the shell relieved like this one, and who carefully threaded a Pino BB in? Class A fit? lots of time, till it rusted just enough to never come out? :-)

Ken Sanford likes to insinuuate that Cinelli bivalent hubs are a solution looking for a problem. I don't agree, but wonder if this bb belongs in that class?

But I sure would love one on my shelf of conversation starters! harvey sachs mcLean va +++++++++++++++++=== Tam Pham wrote:

For those interested, I've snapped a photo of my Pino cartridge BB and it can be seen here:

http://www.fooriders.com/images/bikes/colnagomerckx/pinobb.jpg

Here's a photo of it installed in the bike. Note the especially thinned shell, visible at the clover cutout. This frame has been lightened considerably.

http://www.fooriders.com/images/bikes/colnagomerckx/pinobbshell.jpg

The lightening treatment also includes a drillium steerer tube, seen here:

http://www.fooriders.com/images/bikes/colnagomerckx/drilliumsteerer.jpg

Tam Pham
Huntington Beach, CA - USA