Low profile upper headset bearing compression ring

Discuss light weight issues concerning road bikes & parts.
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JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

I currently use an Omni Racer 5mm top bearing cover. I have one of the “Slam that stem” 2mm covers that I want to use instead.
The upper bearing itself sits about 1mm proud of the headtube. The compression ring sticks up about 2mm past that. Can I get a shorter compression ring so I can run the shorter bearing cover?
I googled it but didn’t see many options. I assume most headset bearings just come with the comp ring.

I am running the stock FSA bearings that came in my frame. I looked at the Cane Creek Slamset, but the one that fits my bike (IS41/28.6) has a stack of almost 5mm. It’s pretty close to what I have now.

Would getting a shorter bearing and using a regular size compression ring be an option also?

Thanks
2010 Orbea Opal 54cm
6.6kg

Valbrona
Posts: 1504
Joined: Fri Oct 28, 2011 3:25 am
Location: United Kingdom of Great Britain and Northern Ireland

by Valbrona

Fitting a shallower depth top cap sometimes requires an almighty faff.

A different compression ring will probably sort it, but you might have to go through two or three before you get right one.

by Weenie


PrinceEdward
Posts: 42
Joined: Wed Aug 01, 2018 3:20 pm

by PrinceEdward

I installed this super low headset spacer for my sold our ax lightness swift sculp
IMG_20180504_143505.jpeg
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JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

PrinceEdward wrote:
Fri Aug 03, 2018 12:39 am
I installed this super low headset spacer for my sold our ax lightness swift sculpIMG_20180504_143505.jpeg

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How tall is that cover? Looks a little shorter than my 5mm cover.

What compression ring are you using? I would be cool with buying a new upper bearing if it came with a shorter compression ring
2010 Orbea Opal 54cm
6.6kg

JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

Does anyone here use the Cane Creek Slamset headset? The stack height is supposed to be 4.6mm, but I figured maybe I could use their upper bearing with a different cover.

I was reading that the Slam that stem covers were made for the Caad. So what makes their upper bearing lower than any other bike?
2010 Orbea Opal 54cm
6.6kg

JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

2CDD5937-F344-4213-854A-CFA84E0B98C2.jpeg
93AE21C5-24C6-46D3-B94A-BD33F1014FD9.jpeg
Here is my current bearing and compression ring. And how it sits in the bike. The bearing is just slightly proud of the frame. The ring sticks out a few mm
2010 Orbea Opal 54cm
6.6kg

monkeyburger
Posts: 119
Joined: Mon Mar 26, 2012 2:45 pm
Location: Bali, Indonesia

by monkeyburger

This cane creek ring is the lowest hight that I have found (use the blue 1⅛ model);

https://www.universalcycles.com/shoppin ... p?id=57100
...finding my inner Onoda-kun...

JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

monkeyburger wrote:
Sun Aug 05, 2018 11:58 am
This cane creek ring is the lowest hight that I have found (use the blue 1⅛ model);

https://www.universalcycles.com/shoppin ... p?id=57100
Hey thanks for the info. I just bought one of them.

Also bought an FSA upper that is supposed to be lower. I’ll measure everything and post what I find.
2010 Orbea Opal 54cm
6.6kg

JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

Just a quick update in case anyone is searching for an answer to this in the future. I bought a Cane Creek 40 compression ring that is much lower than my stock ring. It let me use the “Slam that stem” bearing cover and made the gap between the cover and the frame just slightly more than a papers thickness.

The color of the cover is not the same red that is on the bike. I might paint it black in the future
9516A8A9-8612-4CA4-8445-D32E2FA37CC6.jpeg
2010 Orbea Opal 54cm
6.6kg

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4ibanez
Posts: 509
Joined: Sun Oct 05, 2014 4:54 pm
Location: Norwich, UK
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by 4ibanez

Did the FSA ring turn up? What are the differences in stack height (and weight)?

JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

You know, I forgot to weigh the Cane Creek ring. I compared it and the FSA and they both looked to be the same weight and construction. When I pull it apart again I’ll weigh it.

So since the FSA came with a bearing, comp ring, bearing cover, and top cap, I figured I would use the Cane Creek ring for my current setup.

Here are some pics of the old FSA and new FSA ring. Notice the difference in shoulder height. There is also a slight difference in total height. My digital caliper bit the dust recently and I need to get a new one to get exact measurements.

The new FSA is lighter than the old one.
1A426A4E-098A-4F56-B02A-2928AE7F3F01.jpeg
D0A16CE8-E42D-4A95-ABF8-CC41BB7C9254.jpeg
8B7E1DF1-A41F-4856-9AD5-6EF9ECDC5E48.jpeg
2010 Orbea Opal 54cm
6.6kg

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4ibanez
Posts: 509
Joined: Sun Oct 05, 2014 4:54 pm
Location: Norwich, UK
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by 4ibanez

Ah ok. My FSA ring weighs 1.8g so probably the same one as your lower stack one. Do you know if the Cane Creek was lower stack? My compression ring (I think) has a little drag on my Veloflyte dust cover. I believe they're even lower than Slam that Stem covers, so may just be the nature if the beast. May buy a CC one just to try.

by Weenie


JerryLook
Posts: 117
Joined: Thu Dec 07, 2017 2:18 am

by JerryLook

I recently changed frames and pulled out the CC compression ring. Here is the weight for it. I used the FSA ring in my current frame. Same stack height and .2 grams lighter
7F9D7354-B662-4B71-8135-7C55222C206F.jpeg
2010 Orbea Opal 54cm
6.6kg

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