Joined: May 2008
Posts: 10,106
Likes: 2,757
From: Fredericksburg, Va
Bikes: ? Proteous, '65 Frejus TDF, '73 Bottecchia Giro d'Italia, '83 Colnago Superissimo, '84 Trek 610, '84 Trek 760, '88 Pinarello Veneto, '88 De Rosa Pro, '89 Pinarello Montello, 'Litespeed Catalyst'94 Burley Duet, 97 Specialized RockHopper, 2010 Langster
Originally Posted by
JohnDThompson
What's wrong with the "porta tubulares?"
I have one that was acquired in the 70's. The problem with them is when the O ring wears out. It is hard to find the right one that has the right cross section and overall circumference. The other problem is the "softness" of the steel. It bends really easily, but does not work harden very fast. The third problem is the mounting. it is a real challenge to get it in the right place that will hold and not slide on the rails.
P1000191, on Flickr
B_Y_Saddle_tire by
superissimo_83, on Flickr
1983 Colnago Superissimo by
superissimo_83, on Flickr
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