Cutting a carbon steerer tube below stem

Discuss light weight issues concerning road bikes & parts.
Nefarious86
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by Nefarious86

Zipp make a cap that will allow 1-2mm of protrusion. Image

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basilic
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by basilic

I apologize to Alpine 318 for the catty comment, but the esthetic problem with the enve stem is the enve stem.
Imho of course.

ChiZ01
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by ChiZ01

do it if you plan to never change stem, stems come in different stack heights

Alpine318is
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by Alpine318is

basilic wrote:
Thu Mar 28, 2019 2:39 pm
I apologize to Alpine 318 for the catty comment, but the esthetic problem with the enve stem is the enve stem.
Imho of course.
:lol: :lol: Regardless I think most can agree that the less spacer above a stem the better.

In the picture below it says to cut the steerer 2-3mm below the top of the stem. I would be ok with that and then a 3-5mm spacer above the stem.

Image
2012 Specialized Venge S-Works
eTap
ENVE 4.5
2013 BMC Granfondo GF01
eTap
ENVE Classics 45
2016 Cervelo P2
Ultegra 6800
ENVE 6.7

hannawald
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Location: Czech Republic

by hannawald

There is no universal truth:) various manufacturers have different recommendations, you may have different recommendation from fork manufacturer and stem manufacturer. I would say your steerer should end above the higher one of stem bolts..
Generally 2-3mm spacer above the stem should be aesthetically fine..

morganb
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Joined: Wed Mar 15, 2017 5:30 pm

by morganb

Specialized actually tells you to cut it so that there is no steerer above the stem when using their compression plug/steerer. Their plug does provide a substantial amount of support though.

joejack951
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Location: Wilmington, DE

by joejack951

This was my solution to eliminate the protruding spacer (a look I can't stand either):

Image

CAD section view: Image

Refined design: Image

Downside is it needs to be bonded (Loctite retaining compound) into the steerer tube. Upside is you don't need a top cap (less weight), the plug fully supports the steerer tube for the length of the stem clamp (45mm), and it only weighs ~13 grams. My original was longer and heavier with the thought that it supports the steerer tube down below the upper headset bearing. It was originally designed to with the idea that the top cap would be left in place but I realized there was no point to that, especially if the top side could be cleaned up (like I did on the refined design).

c60rider
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by c60rider

I've always cut mine a few mm short of the top of the stem so that the top cap sits flush and never had a problem until I started reading things on here :lol: but I still prefer it to look flush so what I think gives me more peace of mind is having a long expansion bung into the tube. The colnago one with my C60 was the longest I've ever seen and I've since bought 2 others to go in other frames. My really old Look frame I ended up cutting too much off, total schoolboy error, but because it was a 1 inch steerer and that wasn't compatible with the stem I put a Thomson alloy shim around it and that's had no problems for years.

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Dan Gerous
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by Dan Gerous

Flush looks better but I keep it slightly longer now, about 10mm of spacers above the stem, it makes it easier to sell the bike later on, especially if you are slamming your stem or just using a lower position than the average cyclist, learnt from experience... and from a pro woman cyclist I rode with who had a skyscrapper of spacers. She was saying because of the lower salaries pro women earn (except the big stars), she add in her contracts that she was keeping the bikes after each season so she could make a bit of cash.

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ms6073
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by ms6073

I am using Cane Creek eeNut Expander and Top Cap with no spacers above Enve carbon road stems.
Michael - The Anaerobic Threshold is neither...

wilwil
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Joined: Thu Sep 23, 2010 5:47 pm

by wilwil

Dan Gerous wrote:
Thu Mar 28, 2019 8:32 pm
Flush looks better but I keep it slightly longer now, about 10mm of spacers above the stem, it makes it easier to sell the bike later on, especially if you are slamming your stem or just using a lower position than the average cyclist, learnt from experience... and from a pro woman cyclist I rode with who had a skyscrapper of spacers. She was saying because of the lower salaries pro women earn (except the big stars), she add in her contracts that she was keeping the bikes after each season so she could make a bit of cash.
This. Flush or 3mm looks better but I dont plan to keep my bike for ever. Ive seen pro men with spacers above the stem too. You have to be pretty sure of your bike fit to go slammed and flush. I blame Frank Strack

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