need more stem height

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02-07-17 | 06:36 PM

bonsai171

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need more stem height

Hi,

I have a threaded fork on my bike, and the frame is a bit too small, so there is too much of a drop to the handlebars for my taste. The handlebars are currently attached with a threaded quill to threadless adapter, and a threaded stem. The adapter is currently 3/4" above the minimum insertion line, which is kind of dangerous. Is there a better way to fix this problem? Thanks,

Dave

02-07-17 | 06:55 PM

Scottybigs

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Depending on your bar clamp size: Nitto Technomic

02-07-17 | 06:57 PM

hairnet

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Soma High Rider threadless adaptor
High Rider Stem Adapter 28.6/22.2 | SOMA Fabrications

Soma Sutro quil
Sutro Quill Stem | SOMA Fabrications

Nitto Technomic quil
Nitto Technomic Forged Aluminum Stem > Components > Stems > Quill Stems | Jenson USA

02-07-17 | 08:16 PM

bonsai171

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stems

Is there a way I could get more height by changing to a different stem angle? My current stem is kind of shallow (maybe 6 deg). Looks like the nitto and somas might be too long.

Dave

02-07-17 | 08:53 PM

hairnet

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Sure, you can even compare angle and length to your current stem to determine the reach. https://www.habcycles.com/fitting.html

02-07-17 | 09:24 PM

bonsai171

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stem angle

Cool! So if i'm reading this right, starting at a 130mm extension and about 6 degrees above the horizontal, and looking for another 3/4" or so rise, a 17 degree stem with the same extension would decrease reach by about a cm and increase rise by about 3 cm (1 1/8 inches)? That might work.. Does that math work out?

Dave

02-08-17 | 04:15 PM

Wspsux

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I have a nitto technomic thats super tall. very little flex

02-08-17 | 08:58 PM

TimothyH

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Quote:

Originally Posted by bonsai171

Does that math work out?

Dave

A 6° 130mm stem will be 13.59 mm high and 129.29 mm long

A 17° 130mm stem will be 38.01 mm high and 124.32 mm long

Going from 6° to 17° will increase height ~25mm and decrease reach ~5mm

Someone can check the math...

02-08-17 | 10:48 PM

taras0000

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From: 43.2330941,-79.8022037,17

Quote:

Originally Posted by bonsai171

Hi,

I have a threaded fork on my bike, and the frame is a bit too small, so there is too much of a drop to the handlebars for my taste. The handlebars are currently attached with a threaded quill to threadless adapter, and a threaded stem. The adapter is currently 3/4" above the minimum insertion line, which is kind of dangerous. Is there a better way to fix this problem? Thanks,

Dave

The right size frame is the best way to fix it.

02-09-17 | 08:15 AM

#10

JeremyLC

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Quote:

Originally Posted by TimothyH

Your math looka fine. . . except X is the horizontal and Y is the vertical, you seem to have them swapped.

02-09-17 | 08:26 AM

#11

TejanoTrackie

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Your math clearly predicts the existence of the Higgs boson.

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Originally Posted by Dcv

I'd like to think i have as much money as brains.

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02-09-17 | 08:44 AM

#12

franswa

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02-09-17 | 10:54 AM

#13

TimothyH

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Quote:

Originally Posted by TejanoTrackie

Your math clearly predicts the existence of the Higgs boson.

Proves, not predicts.

Also keep in mind that G = (6.67428۪ ± 0.00067)(10^-11)(m^3)( kg^-1)(s^-2). G matters.

-Tim-

02-09-17 | 11:22 AM

#14

TejanoTrackie

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Quote:

Originally Posted by TimothyH

Proves, not predicts.

Also keep in mind that G = (6.67428۪ ± 0.00067)(10^-11)(m^3)( kg^-1)(s^-2). G matters.

-Tim-

Scientific theories cannot be proven solely by mathematics, so no. I suggest you build your own particle accelerator if you wish to prove your theory.

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What, Me Worry? - Alfred E. Neuman

Quote:

Originally Posted by Dcv

I'd like to think i have as much money as brains.

I see the light at the end of the tunnel, but the tunnel keeps getting longer - me

02-09-17 | 12:39 PM

#15

TimothyH

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Quote:

Originally Posted by TejanoTrackie

Scientific theories cannot be proven solely by mathematics, so no. I suggest you build your own particle accelerator if you wish to prove your theory.

It just so happens that my daughter is a physics major at Georgia Tech, looking for grad schools right now and has been published for black hole research.