Does this stem exist?
 

Hello folks,

Not sure which forum to post this in so I thought I would try C&V. I would like to find an alloy quill style stem (22.2) that fits an older Cinelli bar (26.4). Here is the catch though, I need something that is only about 80-90 mm long and is angled up instead of down. You see I am getting old and I am tired of fooling myself.

I have looked online for a while now and have not found all five requirements in one stem. I can change out the bars but I would rather not have to.

Something like this but with the 26.4 bar clamp.
http://bikeforums.net/attachment.php...hmentid=441566


Thanks in advance,
Mike

Cinelli used the 26.4 dimension exclusively. Unless they made a mob stem that I am not aware of, No.
You are going to be looking for new bars.
I guess a stem could be bored out, quite a bit of effort.

Rats! I figured as much. Been looking for a week now and nothin'...

Nope...go fish.

At $20, that Sunlite 2 bolt stem is cheap enough to get a new set of bars too.

Although, my local machine shop would likely bore out an old riser stem for about $30-50; pretty simple job on an alloy stem. Cost-wise, Kind of a tossup between that and new bars, depending on how cheep you got the stem...

I have an ITM riser stem that accepts 26.4 bars. I think it's a 110 mm though. I would search ebay for ITM.

Why don't we have a 'like' button?

I have a Cinelli Grammo titanium zero degree rise 26.4 quill stem that I got from eBay a few years ago. It is like a 10 or 11 cm size. I've never used it due to the rarity factor. I think these came in shorter lengths as well. It is a long shot but they do exist. Not sure if the slight upward rise would be sufficient for you. You must like your 26.4 bars a lot!

My marin has cinelli bars with a nitto technomic stem, not 100% on bar size though I'll measure when I get home and let you know. This pic shows the stem as far in as it will go without forcing stuff

http://i1074.photobucket.com/albums/...psf48f1e33.jpg

I managed to fit a black 26.4 bar into a black 25.4-clamp stem without scratching the black and got it to tighten adequately. Not necessarily recommended or encouraged, but it can be done.

31.8 stem and a shim

The Nitto dirt drop stem (riser angle) comes in 80mm length and 26mm clamp. Boring it .2mm sounds like a lazy afternoon with emery cloth wrapped around a dowel kind of project.

How about a Velo Orange Threadless Stem Adapter and the stem of your choice?

+1) you can take a 26.0 stem out precisely 0.2mm , or 1" out 0.5mm (X2 thats .04 and 1mm diameter. )

I noticed this myself, that the stems with a removeable faceplate are more tolerant of using the next-larger handlebar clamping diameter.

Perhaps the bar ends up being very slightly ovalized upon full torqueing, but I didn't notice it one bit and the clamping was extremely secure.

Cinelli starting making a variety of 26.0mm bars in the early 1990's btw, many are still out there.

Ambrosio also used the 26.4mm bar diameter for many years.

Last bit of trivia is that Shimano AX stems accept 26.4mm bars as if made for them (apparently they were).

Oh, and if you can get a dowel of a diameter such that it comes up to near the needed clamp diameter with a single wrap of sandpaper glued on, then one could turn the dowel in the clamp while tightening the clamp bolt in small increments until the desired diameter was reached.
I believe this would assure a straight bore that maintains the original perpendicular orientation, though would only do this to a stem that had good meat around the clamp, not one of the super-slim, pared-down designs.

Oh, and to "big chainring", I don't think that TTT ever made any 26.4mm stem clamps, even some of their MTB bars and stems were 25.8mm.
They did make cheaper stems (and matching "Europa" handlebars) with 25.4mm clamping.
Likely your ITM stem's clamp has been abrasively or forcibly "expanded" in some manner(?).

Free and easy.

One option is to buy the stem of your choice, (get decent quality), and have the ID reamed out to fit. Most bike shops have adjustable blade reamers similar to this one and 26.4mm is within the range of the one they use for seatposts.

You're not removing much metal, 0.5mm from each side if starting from 25.4mm there's little issue of loss of strngth, but the job has to be done right. Before reaming remove the bolt(s) and add a washer or other shim to keep the stem from closing completely. Then tighten so there's good rigidity, and ream. When finished, removing the shim(s) gives the stem clamping room with the curvature matching the new bars.

WARNING, watch the mechanic do the job, because I've seen to many ream without the shim and end up with a stem that cannot be tightened to the bar.

Mgreen3691, how much handlebar lift do you need?

I have installed classic Cinelli bars into 26.0 Nitto Technomic Deluxe stems (we'll have to get you the current name if you want to try this, Nitto has changed some nomenclature). With a Tech Deluxe you get a vertical length about 5 cm greater than with a classic Cinelli 1a or a similarly-sized Nitto Pearl. The finish of the Tech Deluxe is at least as good as a NOS 1a. AND you keep the classic look of your bike, since the Tech Deluxe is a 73 degree angle like a Cinelli 1a.

Gently helping the clamp to open is not such a bad approach, and I have survived it in actual riding. I haven't broken a Nitto stem, nor my teeth from falling on the ground.

I think many more up-angled stems will be 25.4 than 26.0. That's another reason for targeting a Nitto Tech Deluxe rather than an angled stem.

If you need a lot more lift than you can get from a Tech Deluxe, look for the Technomic by Nitto. However, these can give you more lift than you are hoping for. They do for me.

Something to keep in mind also, you should buy a stem that will give you the amount of reach to the bar that you want as well as height increase that you need. You should know both numbers to shop for a stem, and check that the stem you get (73 degree road-style or a different stem shape) will deliver what you need. One of the key points is to find out how the extension length on the stems you're interested in is measured, so you buy the right part. It can be a real pain and a fail to have to buy several different stems searching or a match, and possibly not even finding "it."

If there is a hyperlink in your "this one" text, it can't be read by my computer.

You're right, conscientious technique is everything when using cutting tools to achieve proper sizing and fit! A thick washer to effect minimum clamping is a really good idea, and probably stabilizes the somewhat-flexible clamp head on a lightweight stem.

Link is fixed. The washer is critical to ending up with a round bore of the right size with room to clamp. This would work with the dowel and sandpaper method also, but you need to build up the dowel with multiple turns of tape or paper, so the OD with sandpaper on it is close to 26.4mm.

BTW- in production, single bolt stems are bored before the slot is cut. Dual bolt stems are bored separately in semicircles, but not full semicircles so they're round when there' a gap.

some of us would be confused by that

Thank you very much folks. Lots of good information and options here and I really appreciate it. I will look at several of these options in more detail and post a pic of my solution when I get something in place.

Again, I really appreciate the detailed responses. You people are great.

Cheers,
Mike

The bars on the marin are 26.0.

Went with the Nitto Drop Dirt and reamed with a dowel and sandpaper which took all of about 45 minutes. Working out great albeit an expensive solution ($65) but I felt it was the best compromise to keep the period look as close as I could. Completely solved my side back pain (kidney area) and way more comfortable on the long haul. I can easily do 100 miles on this thing now. I know it looks pretty geriatric but I simply could not ride this thing with the old stem arrangement.

Pics....

http://bikeforums.net/attachment.php...hmentid=444077

http://bikeforums.net/attachment.php...hmentid=444078