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Update on hardcore math question below (stem length/rise)(15 posts)

Update on hardcore math question below (stem length/rise)floatch
Apr 23, 2002 4:40 AM
Okay all, because I'm a mathematical moron, I checked out habanero's page on stem lengths and angles, printed out a protractor, and used a nice ruler to decide I need a longer, taller stem. Again, thanks to everyone who helped out!
I've found that Salsa makes a (26.0 clamp) cromoly road stem with a 115 degree rise (relative to the steerer tube). That is to say, it rises 25 degrees relative to the steerer tube, NOT the horizon. It's called an S.U.L. road, and I need a 9 cm length. Does anyone have any clue as to where I can buy one online? I've searched colorado cyclist, performance, and a MTB site as well.
I know I could get a MTB stem and a 25.4 clamp road bar, but I just bought a new Easton EC-90 carbon bar, and I'd like to use it (26.0). I even considered having one made, but it's gonna cost at least a hundred bucks.
So, thanks again, and if anyone knows an online source for one of these salsa stems, please share!
Just Email Salsa and Ask them (NM)BDBike
Apr 23, 2002 5:34 AM
What is your height,inseam and frame size?STEELYeyed
Apr 23, 2002 5:46 AM
That will tell the us alot about your situation,unless you are a racer,you should'nt have more then an 1-1/2" standover clearance,if you do, you will have a hard time ever getting comfortable on that frame. I tried to get comfortable on a frame that was to small for 2 years until I gave up and admitted my mistake.
Here you go:floatch
Apr 23, 2002 6:45 AM
I'm 5'6", with a 31.5" inseam. My frame is a 52cm C-T. Actually, using colorado cyclist's fit page, my frame is only >very slightly< small for me. I probably could have ridden a 54cm, but I wanted a smaller, lighter, stiffer frame.
what's the head tube length? aheadset? hiddenheadset?colker
Apr 23, 2002 7:39 AM
9cm sounds short.
what's the head tube length? aheadset? hiddenheadset?DINOSAUR
Apr 23, 2002 12:29 PM
I agree 9cm sounds short, and you said you had a choice between 2 sizes and opted for the smaller size? When you ride your bike can you rest your hands on the hoods comfortably without being all stretched out? If I were you, I'd spend some bucks and have someone fit you. If not, don't spend big bucks on stems, experiment with a few until you find what works. And the burning question is I guess your LBS is no help here? It seems to me that if you would convey your thoughts and problems to your LBS they could fix you up in a couple of minutes. Swapping out stems is a five minute job and you could test ride it and make sure it corrects the problem. The reason I'm saying this is because I had problems with stem length and this is what I did..
re: Update on hardcore math question below (stem length/rise)gtx
Apr 23, 2002 6:44 AM
speedgoat.com
licktons.com
oopsgtx
Apr 23, 2002 6:44 AM
that would be: lickbike.com
Neither speedgoat nor lickbike has the stem I need!floatch
Apr 23, 2002 7:07 AM
Speedgoat only has mountain stems and quills. Lickton has even less. I need a 26.0 clamp, 115 degree rise, 9cm length 1 1/8" threadless clamp. (ROAD S.U.L.)
Neither speedgoat nor lickbike has the stem I need!gtx
Apr 23, 2002 7:30 AM
but they should be able to order them for you--as should your LBS. Salsa is owned by QBP, so they're easy to get.
Score! That's what I wanted to hear!floatch
Apr 23, 2002 8:21 AM
I didn't know Salsa was owned by Quality! Sweet! I thought it was still an independant company! I'll have my LBS get me one. They put in orders with Quality all the time. Thanks a million, man.
Where to buy?Turtleherder
Apr 23, 2002 7:17 AM
I checked the usual places and could not find the 115 degree rise stem listed anywhere. www.cambriabike.com has the 105 degree for $64.00. You might e-mail them and see if they can get the 115. While looking I found a 3TTT Mutangolo stem that comes in a length of 95 and adjusts from -20 to +40 degrees. Check it out at www.bullteksports.com for $69.95. Another place that has the Mutangolo is www.parker-international.co.uk for $57.86 U.S.
re: Update on hardcore math question below (stem length/rise)jim hubbard
Apr 23, 2002 11:21 AM
It is actually 118° you want with a 8cm length, better to go to a 120° if possible.
I'm confusedNessism
Apr 23, 2002 1:00 PM
I confused by some of the recommendations on this board for this stem. According to previous information, Floatch's current stem is 97 degrees (or +7 degrees) and 80 mm reach. In order to raise the handlebars 2 inches from this postion while maintaining the same reach, a much longer stem will be needed; 110 mm and 120 degrees (or +30 degrees).

The way I see it, as the stem is raised is sweeps in an arc backward, effectively shortening the reach. A longer reach stem is needed or the bars will come back toward the rider.

Am I missing something here?

Ed
absolutely right. for every 10º risecolker
Apr 23, 2002 3:01 PM
on the stem angle, you miss 0.5cm of reach.
80º ahead stems, now the norm, are effectively 0.7cm longer than quill, 75º, old style stems.