[CR]Campy Triple BB <=> Phil Wood Triple BB ?


Example: Production Builders:Cinelli:Laser

Date: Wed, 12 May 2004 22:13:27 -0400
From: HM & SS Sachs <sachs@erols.com>
To: gillies@cs.ubc.ca, classicrendezvous@bikelist.org
Subject: [CR]Campy Triple BB <=> Phil Wood Triple BB ?


Donald Gillies asked:

<snip>

What's the closest BSC match to a 1974 campy triple bottom bracket, in the phil wood product line ?? Phil Wood & company isn't sure. They say, "pick the closest traditional BB that isn't campagnolo specific. our adjustable cups should do the rest."

Supposedly, the stock spindle of the old campy triple was 117 mm. however, campy was a little bit lazy in printing catalogue #17, and they used the same diagrams for the 112 double BB's and 117 triple BB's. Needless to say, the offsets on the 117mm triple BB add up to 112 mm. (http://www.campyonly.com/history/1974/triples.pdf).

I know that campy used thicker cups & lockrings by maybe 1 mm, so maybe a campy triple bottom brack is actually 117 R+6 ( = 112 + 2 mm for lockrings + an extra offset of 3mm)

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Don, I may be mis-interpreting, and may have a memory problem, but I believe that the campy triple always came with the "thin" cups. I know of at least two on-topic variants, though, pre-CPSC and post-CPSC, the later being longer. I can get you the length of one or the other, but don't know which it is, so I may be of little help.

Good luck

harvey sachs
mcLean va