Jerry: I know you asked about Ambrosio not later 3ttt. For what it is worth: my 3ttt adjustable is fitted with "Nitto Raundoneur 135" bars which I purchased many years ago from Rivendell. I think they are the std. Nitto dia. of 25.4. Rivendell could confirm. Richard Cielec Chicago, Illinois
Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net> wrote: Thanks for all the off-list responses. Others also report problems with some, but not all these stems. The most likely explanation offered was that they were available both for alloy bars (presumably 26.0) and in 25.4 for steel bars. This sounds plausible, since these stems were probably most often used on the track, and steel track bars were still common in the 60's. So it would seem I should use this stem with 25.4 bars like British GB or JIS dimension Japanese bars of which Nitto still makes some very fine ones.
Regards,
Jerry Moos Houston, TX
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