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Stem angle Q?

Old 04-06-09, 12:08 PM
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Stem angle Q?

I ordered a 73° stem but it's either pointed way up or way down, I want it parallel to the TT, will a 84/96° stem fix it?

Also, do 3t stems run short?
I have a 110mm ARX team and it looks more like 100mm to me.
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Old 04-06-09, 12:16 PM
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84 should fix it...and umd knows about the 3t situation...seems like a few people have had problems with em.
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Old 04-06-09, 01:16 PM
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3T 73 degree stems run long. 73 degrees will make it parallel to the ground, if you want it parallel to the top tube, then I guess it depends on your top-tube angle...
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Old 04-06-09, 01:19 PM
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btw, if you want a 84 degree 100mm ARX and have a 73 degree ARX I will trade you, depending on it's actual (not claimed) length. Measure it along the extension from center to center (close enough would be along the top from the center of the stem clamp to the end w/o faceplate.
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Old 04-06-09, 04:03 PM
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Originally Posted by umd
3T 73 degree stems run long. 73 degrees will make it parallel to the ground, if you want it parallel to the top tube, then I guess it depends on your top-tube angle...
Hmm.... it is parallel to the ground, I think the 84 will work out better.

Originally Posted by umd
btw, if you want a 84 degree 100mm ARX and have a 73 degree ARX I will trade you, depending on it's actual (not claimed) length. Measure it along the extension from center to center (close enough would be along the top from the center of the stem clamp to the end w/o faceplate.
Measuring that way it is 110mm, looks shorter though.

Thanks for the offer but I'm pretty sure I need a 110mm.
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Old 04-06-09, 04:14 PM
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Originally Posted by MONGO!
Hmm.... it is parallel to the ground, I think the 84 will work out better.



Measuring that way it is 110mm, looks shorter though.

Thanks for the offer but I'm pretty sure I need a 110mm.
Mine is 110mm measured that was but it marked as 100mm.
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Old 04-06-09, 04:22 PM
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Stem measurments depend on which way you measure it. In the upright position it will read shorter than it would in the lower position. Which way is the listed spec? I would assume it is the lower position but I don't know for sure.
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Old 04-06-09, 04:36 PM
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Originally Posted by Bluechip
Stem measurments depend on which way you measure it. In the upright position it will read shorter than it would in the lower position. Which way is the listed spec? I would assume it is the lower position but I don't know for sure.
Stems are typically measured by their extension, which is independent of angle
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Old 07-02-09, 10:44 AM
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For it to be parallel to your TT, you need to know your HT angle and TT angle. And that info about the T3s being labelled wrong is very good...I was looking at these.
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Old 07-02-09, 10:58 AM
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Originally Posted by MONGO!
I ordered a 73° stem but it's either pointed way up or way down, I want it parallel to the TT, will a 84/96° stem fix it?

Also, do 3t stems run short?
I have a 110mm ARX team and it looks more like 100mm to me.
First off, is there some magical performance to be gained from having it parallel to your top tube or can you admit that this is a total OCP move?

Second, top tubes on compact frames vary a lot. The only way you could know the exact angle you need is to determine the angle between your heat tube and your top tube (you could probably get a really good guess with a friggin' protractor). Whatever angle that is, subtract that from 180 and get that angle on your stem.
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Old 07-02-09, 10:58 AM
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1. Why is this in the racing section?

2. Get a 6* stem.
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Old 07-02-09, 11:26 AM
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Anuybody remember the days of quill stems when 99% of all road stems were 73*?
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Old 07-02-09, 11:30 AM
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yeah, man. they don't make nostalgia like they used to.
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Old 07-02-09, 11:48 AM
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Originally Posted by urbanknight
First off, is there some magical performance to be gained from having it parallel to your top tube or can you admit that this is a total OCP move?
It's a total OCP move, is that a problem?

This is an old thread, I got the 6° stem and all is good.
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Old 07-02-09, 12:19 PM
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Originally Posted by MONGO!
It's a total OCP move, is that a problem?
Not as long as you are ok with that.

Originally Posted by MONGO!
This is an old thread
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Old 07-02-09, 12:24 PM
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How is a 73° degree stem guaranteed to be parallel to the ground?
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Old 07-02-09, 12:36 PM
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Originally Posted by PanicDog
How is a 73° degree stem guaranteed to be parallel to the ground?
Assuming 73° steerer angle. If the steerer angle is different then it won't be but it won't likely be more than 1° off...
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