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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 08-29-12, 08:14 PM   #1
Blackguyrides
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Drop the stem or leave space (New 735 Build)

Hey all,

So I'm slowly building up my new 735 as parts flow in and today I got my cups in. I left the fork uncut because I wasn't sure How much to cut and what for. I wanted to ask what are the benefits if any for running the stem flush or with 2 spacer or say maybe 1 1/2. Does it make you more aero dynamic by putting you lower in the bars? Take a look at the pics and let me know your thoughts.



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Old 08-29-12, 08:18 PM   #2
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Leave yourself at least an inch under the stem to play around with fit.
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Old 08-29-12, 08:20 PM   #3
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You can't dial in your fit based on looks.

Cut your steerer so you can assemble it with about 40mm of spacers beneath the stem (the maximum for a carbon steer tube) and 5mm on top, ride your bike, dial in the stem height, then cut your steerer again if necessary.
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Old 08-29-12, 08:40 PM   #4
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Yea I know... I'm not concerned about the look I'm just curious about the stack height. Is it mainly because of comfort, aerodynamics? I'm going to throw some wheels on it at the shop, ride around and see how it feels tomorrow.
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Old 08-29-12, 08:50 PM   #5
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RULE #45// SLAM YOUR STEM.


A maximum stack height of 2cm is allowed below the stem and a single 5mm spacer must always – always – be stacked above. A “slammed down” stack height is preferable; meaning that the stem is positioned directly on the top race of the headset.
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Old 08-29-12, 09:09 PM   #6
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It's about fit and riding position.
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Old 08-30-12, 10:05 AM   #7
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and a single 5mm spacer must always – always – be stacked above.
Sorry for not knowing but I have to ask - why is this?
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Old 08-30-12, 10:24 AM   #8
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Having nothing to do with those stupid "rules", it keeps your stem making full contact with the steerer. This is especially important on a full carbon fork.
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Old 08-30-12, 11:40 AM   #9
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Quote:
Originally Posted by Bat56 View Post
RULE #45// SLAM YOUR STEM.


A maximum stack height of 2cm is allowed below the stem and a single 5mm spacer must always – always – be stacked above. A “slammed down” stack height is preferable; meaning that the stem is positioned directly on the top race of the headset.
Don't do it. Completely illogical to eliminate one entire axis of fit adjustment especially when you've not even had the bike between your legs. Even then so, you're kind of cornering yourself by doing this.
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Old 08-30-12, 11:49 AM   #10
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More stack height is more comfortable / less aerodynamic. There's a point at which being aero isn't as valuable as being able to endure the ride. You've got to find what you're comfortable with. Do long rides to dial in the fit--you find out more about your position when you're forced to maintain it for longer periods.
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Old 08-30-12, 12:39 PM   #11
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More stack height is more comfortable / less aerodynamic. There's a point at which being aero isn't as valuable as being able to endure the ride. You've got to find what you're comfortable with. Do long rides to dial in the fit--you find out more about your position when you're forced to maintain it for longer periods.
+1
slam dat stem
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Old 08-30-12, 02:51 PM   #12
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Having nothing to do with those stupid "rules", it keeps your stem making full contact with the steerer. This is especially important on a full carbon fork.
I understand - and that makes good sense, thanks.
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Old 08-30-12, 03:35 PM   #13
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Having nothing to do with those stupid "rules", it keeps your stem making full contact with the steerer. This is especially important on a full carbon fork.
I have warned you before. You are going to be punished in the afterlife for your blasphemy.
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Old 08-30-12, 03:53 PM   #14
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