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9 votes

Is this a sign for bearing maintenance?

I've never been in this situation, but here is my opinion. I would take the fork out, or have the store do it, and inspect things. You can check if your bearings feel gritty, which indicates wear. If ...
Weiwen Ng's user avatar
  • 31.1k
9 votes
Accepted

About to cut my steerer tube, can I just measure the spacers and mark at that distance?

Cutting off an amount of steerer equal to the spacers you are removing is faulty logic because it makes assumptions about how good the steerer gap (that 2-3mm distance) is now. When you have spacers ...
Nathan Knutson's user avatar
8 votes

Is this a sign for bearing maintenance?

I had a similar situation a few months ago. Any time it rained or the bike got wet, there ended up with brown rusty smears running out of the bottom of the headset. Mine uses a semi-integrated headset,...
Tom Carpenter's user avatar
7 votes
Accepted

Shallow ring of death

The video is from an internet personality who a) behaves extremely problematically, b) has no engineering training, and c) has a thing about carbon fiber. Raoul Luescher is a much more credible source ...
Weiwen Ng's user avatar
  • 31.1k
6 votes
Accepted

I've removed the steerer tube for the first time after 20,000 km, what maintenance does it need?

It looks normal. The silver ring that lifted away is the compression ring. Almost all threadless headsets have that or something like it. It has a wedge shaped outer face and a slit. It receives ...
Nathan Knutson's user avatar
5 votes
Accepted

Creaking sound, stem extender/steerer tube assembly

Take apart. Clean all contact surfaces (inner/outer) until perfectly clean. Wipe with alcohol. Clean and regrease all bolts. Reassemble. (Optionally) Stop by your local bike shop and ask for a torque ...
Art Gertner's user avatar
  • 2,506
5 votes

About to cut my steerer tube, can I just measure the spacers and mark at that distance?

I'd cut it at 5 mm above the top of the stem just to allow for a bit of adjustability. If this is a carbon steerer, you can get special carbon hacksaw blades, and you should seal the cut edge with ...
Adam Rice's user avatar
  • 29.8k
4 votes

Steerer tube flush with top of stem

If the last photo is with a 5 mm spacer, IMO that's too much. The top pinch bolt in that last photograph looks just about the same level as the top of the steer tube. That means the stem is both ...
Andrew Henle's user avatar
  • 10.6k
4 votes

Steerer tube flush with top of stem

I would look for a 2mm or 3mm spacer for that.
Noah Sutherland's user avatar
4 votes

Unsure if my carbon steerer got damaged from riding with stem attached in wrong position

Although I can't make guarantees, most of the time, the "do not leave space above the stem" clause refers to empty space. As in, ensure the steerer goes all the way through the stem clamp. ...
MaplePanda's user avatar
  • 15.5k
4 votes
Accepted

Scratch in the very top of a new carbon steerer tube. Should I worry about this?

Initially, I thought this might be a void that's at the surface. I believe that there is always the chance of a void, or a hole, in carbon fiber, but good manufacturing will minimize the incidence of ...
Weiwen Ng's user avatar
  • 31.1k
3 votes

I've removed the steerer tube for the first time after 20,000 km, what maintenance does it need?

This won't answer every question asked. I'll focus on bearing maintenance. You see a lot of dirty grease. It can be wiped off. However, it's probably not necessary to service your bearings. If you ...
Weiwen Ng's user avatar
  • 31.1k
3 votes
Accepted

How should I deal with this splintered carbon steerer?

With carbon fiber structures, the designers are counting on every layer of carbon being there. They build in a safety margin, naturally, but I would guess they are counting on the structure not being ...
Weiwen Ng's user avatar
  • 31.1k
2 votes

Creaking sound, stem extender/steerer tube assembly

I have found that there is an additional problem to fork extenders and installation causing noise; the trough bolt tensioning of the headset bearings is often substandard and made from mild steel. The ...
Big T's user avatar
  • 21
2 votes

How should I deal with this splintered carbon steerer?

Next time you cut, cut fully around the circumference of the steerer to nip any splinters/delamination in the bud. Tape helps only so much.
Lamar Latrell's user avatar
2 votes

Unsure if my carbon steerer got damaged from riding with stem attached in wrong position

Lack of spacers above the stem is not a cause for any concern. Like the stem cap, those spacers are only needed to enable the preload to be adjusted before the stem is tightened. Once the stem is ...
mattnz's user avatar
  • 49.8k
1 vote

Tightening a compression plug - manufacturer says 9-12 Nm, seems too tight at 6 already

I have rode a bunch of different bikes with different styles of compression plugs and I have learn a few things and sometimes you don't need to torque it down all the way to what the makers says. If ...
dmb's user avatar
  • 818
1 vote

How should I deal with this splintered carbon steerer?

In the end, I took a different approach here. The manufacturer assured me that the extent of the damage is no big deal, and that keeping the damaged section of the steerer was preferable to removing ...
Will Vousden's user avatar
  • 3,991
1 vote

I've removed the steerer tube for the first time after 20,000 km, what maintenance does it need?

When removing the fork from the head tube, the most important thing to do is to remove all dirty grease and put fresh grease in. This is important not only when you have loose bearings / ball ...
juhist's user avatar
  • 18.5k

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