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Looking to match a stem with a Easton EC90 Bar(11 posts)

Looking to match a stem with a Easton EC90 Bartheweasonator
Apr 28, 2003 8:26 PM
I recently purchased a EC90 bar and found they make me reach further than my X-tenos bars I replaced. I currently have a Kore Lite 2 100 mm -17 degrees stem (which makes the stem 90 degrees to the ground) with a 2 bolt 26.0 clamp mated to the Easton bar. The fork is a Easton EC70 w/ 1 inch carbon steerer. When I attached the bar at 90 degrees is when I found I reached too far. I flipped the stem and now the position feels good (starting to lose some flexibility) but I feel too upright. I am thinking I want to go with a 80 or 85 degree 90 mm stem but am having a difficult time finding one with a 26.0 clamp. Any advice for a good stem with a 2 bolt clamp to be sensitive with carbon bars would be appreciated. One thing I am confused about is the angles that are out there now. If it is less than 90 degrees does that mean it will position the bar higher like at 2 o'clock instead of 3 o'clock and if it is more than 90 like 105 does this mean is is at 4?
re: Looking to match a stem with a Easton EC90 BarFunston
Apr 28, 2003 8:59 PM
Try a 90mm stem. Or try an 84 degree (-6) stem such as a Ritchey WCS or the cheaper Ritchey Pro. That'll give you some rise, but not as drastic as what you've got now.

Whatever you look for, I'd recommend a four-bolt removeable face plate instead of a two-bolt setup. It'll be more secure and creak-resistant.
re: Looking to match a stem with a Easton EC90 Bartheweasonator
Apr 29, 2003 4:45 AM
Thanks for the info. I read an article in MBAction last summer that said 2 bolt patterns were actually better for carbon bars because it gave a more uniform distribution of torque on the bars. They noted the 4 bolt patterns saw a higher fracture rate because there were more bolts to tighten and more variance in the pressure. I know people are going to say use a torque wrench, but the wife won't let me go out and buy a $50 wrench...I know take it in and let a pro work on it....
Oh, come on...Fez
Apr 30, 2003 7:38 AM
You wrote:

I know people are going to say use a torque wrench, but the wife won't let me go out and buy a $50 wrench...I know take it in and let a pro work on it....

A few comments:

1) The wife really must wear the pants here.
2) You can afford an EC90 carbon bar but can't stomach the price of an essential tool?
3) The pro wrench doesn't have a magic touch. Anyway, what if you ever need to work on the bolts in the future? Get the right tools... a front end is not something to take chances on.
What if his pro happens to have a torque wrench?TrekFurthur
Apr 30, 2003 12:56 PM
Can't do anything about the wife, though; shouldn't have told her about the $150 handlebars, then she would have let you buy a $50 wrench.
Beware of Ritchey stems and EC 90s....Stinky Hippie
Apr 30, 2003 4:19 PM
....the clamp ID is about .5mm to small to clamp to an EC90 without gouging.
stem angles...C-40
Apr 29, 2003 7:22 AM
The stem angle that you have now is also called a 73. When you flip it, it will raise the bars around 5cm, but also shortens the reach by about 2cm.

An 84 degree stem like the Ritchey WCS would raise your bars by 1-1.5cm. Flipping the stem will raise the bars another 2cm, but shortens the reach by about 1cm (buy the next longer size). Supergo and Peformance have very similar stems that are much cheaper.

Any open-face stem with a 25.8 or 26.0 clamp will work with the Easton bars.
Apr 29, 2003 10:24 AM

This site has a nice chart that will provide a relatively accurate estimate of the additional bar height and the decrease in reach from increasing the stem angle .
stem angles...theweasonator
Apr 29, 2003 11:30 AM
Thanks!! I went to the LBS today and we played around with my position. I actually decided to keep my current stem and just remove some spacers. I had 5 in there and moved a couple to the top. This chart if very helpful. I will see if this helps in the long run and may come back and get a new stem.


Actually, a 25.8 Ritchey chewed my EC 90 up badly....Stinky Hippie
Apr 30, 2003 4:21 PM
...I'd tell anyone thinking about an EC 90 to go with the "mandatory" 26mm stem clamp

Feel the gin
check the bar diameter...C-40
May 1, 2003 4:50 AM
Handlebars are not constructed all that accurately. I carefully checked the diamter of my EC-90 bars before mounting them in a Ritchey WCS stem. Although the advertised diamter is 26.0, mine checked between 25.8 and 25.9, which means that they were smaller than the nominal size and not round. I've used three different Ritchey WCS stems with my bars and never had a problem.

The simple solution to minor interference is to file a chamfer along the edge of the stem and face plate to elimintate the interference. The chamfer only needs to be about 1mm wide.