Personally, I would just buy the correct stem. If you do want to modify the stem you already have, I would use a brake cylinder hone, generally available at local auto parts stores, Open it up as little as possible, leave as much metal as possible. You can also use a stem spreader (or snap ring spreader) to avoid damage to the bars. You can als fabricate a spreader from a nut, bolt, washer, and coin. Again, for the price of the tools and selling the stem you have, you can get the correct stem which is what I would recommend. Aluminum is not as forgiving as steel.
Laing On Wed, Jul 26, 2023 at 7:50 AM Nick Payne <njh...@gmail.com> wrote: > I'd use an adjustable reamer to ream the stem from 25.4 to 26.0. I did > this back in the 1980s when I wanted to use 26.4 Cinelli bars in a Nitto > Technomic stem. The adjustable reamer I have for seat tubes has enough > adjustment (down to 23.75) to be used for stems as well. > > You can get cheap adjustable reamers off Aliexpress for less than $10. No > idea of the quality (probably crap), but they should last long enough to do > the job you need on an aluminium stem. > > Nick Payne > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rbw-owners-bunch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/9c9e7e4f-99fb-45c2-8ace-3e481fbbd73cn%40googlegroups.com > <https://groups.google.com/d/msgid/rbw-owners-bunch/9c9e7e4f-99fb-45c2-8ace-3e481fbbd73cn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/CADXkOiPA%2BM8tOzTe0_d5C3aaTVTRPmHZnfcme18e475Wu3Kf6w%40mail.gmail.com.
