monty dog wrote:
Bear in mind that most Cinelli stems are for bars of 26.4mm diameter whereas most other handlebars and stems are 26.0mm - you can shim it out
Not so fast...
You need to make sure the handlebar diameter is the same as the stem clamp size.
Most Japanese bars use a 26mm diameter, although over the years they have made them in 25.0mm or 25.4mm.
Cinelli's proprietry sizing was 26.4mm right up until about 1994, when they changed to 26.0mm. This means that almost all Cinelli bars and stems are 26.4mm.
If the bar is too big for the stem, you will probably be able to get it in, but you will leave deep ugly scratches on your bars. If the stem clamp is too big for the bar, it will slide in, but even if you tighten it up fully, the bars will be a loose fit, and the first bump in the road will cause your bars to slip, potentially sending you over the bars and onto the pavement. A potential solution is to put a shim in, such as a strip of aluminium from a coke can, but a better solution is to buy a stem that is the same size as the bars you are currently using.
Yes, i know that.
I'm also going to order a Cinelli bar with a 26.4 clampsize.