Originally Posted by
Camilo
Just as a matter of jargon, you're not adjusting the top tube length, you are adjusting the reach. The bike's top tube can't be adjusted.
Are you talking about
quill stems, like this? If so, you need to remove the handlebar tape and brake levers and thread the bar through the stem's bar clamp.
Watch this video. It will tell you everything you need to know about this
Bing Videos
Yes, "reach" is the term that I forgot. And yes, too, it is a quill type stem. Also, the handlebars are the right size for the stem. Also also, they are road style handlebars. However, I looked at the video. And the place in the video where it looks like the stem slips off easily in the video is the place where it gets stuck for me. I *think* I remember that there was some way of wedging the stem open enough to run the handlebars through. The penny trick does not work because the threading is not part of the stem; it is a pinch bolt with a nut.
Thanks to all for your wise guidance. I think I'm going to take it to may all-time favorite mechanic who taught me most of what I know.
Saul