I'm posting this as a general notice to everyone for our benefit and maybe to save a few headaches. I looked for similar posts and couldn't find one. Some of the details on this might be generalized and slightly off, but the main information is correct. Basically it's a non-scientific anecdote.
For a few years, Cannondale and Gary Fisher experimented with a larger diameter threadless steerer tube (1.25" instead of the now typical 1.125").
Figuring this out took two people and two trips to my LBS (D&D in Berkley) for them to still mess this up. Short rant: I can't stand how I get treated there. Thanks for wasting a week! Can you believe they told me to put my bike on Craigslist? This is two bad incidents in a row. So, from here on, I go elsewhere.
During this time, it was common for stems to be very long without any angle. I don't know if this was intentional, or just how bikes used to fit people. I recently helped out a friend with one of these Cannondales by truing up her wheels, adjusting brakes, adjusting shifters, etc. When she dropped off her bike I noticed her seat was slid all the way forward. I had her ride the bike in my driveway. She was hunched way forward, really stretched out. Her legs fit well, but it was clear the stem was just way too long (It's the longest one I've ever seen, and I've been looking). She had a flat handlebar, too, which isn't helping. She's complained about hand pain while riding before. So, since the bike is in pretty great shape, I decided I'd find her a new stem and handlebar and see if we couldn't fit her on the bike better.
I've looked around, and the only people that currently use a 1.25" threadless steerer tube are tandem mountain bikers (Hey, D&D, you were wrong when you told me nobody makes them anymore, eat it, you know-it-all sociopath). Santana makes several stems, in various lengths and angles, for both regular and oversized handle bars. I bought one through a web-site. There are a few parts dealers. I didn't deal directly with the tandem manufacturer.
Here's the web-site I bought it from, I'll post here again if I have any problems, etc. It was over the phone.
Here's the tandem builder:
Oh yea, they aren't cheap. Oh well. The following words are to help any one else find this information in a search (cause I had a bear of a time). I hope this isn't a problem.
1.25" Stem Threadless
1 1/4 Stem Threadless
1.25in Stem Threadless
31.8mm Stem Threadless
Threadless Stem Cannondale Fisher
...Proud lake in 3 hours...