Show me your top caps!

Discuss light weight issues concerning road bikes & parts.

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Dr.Dos
Posts: 1054
Joined: Sat Mar 27, 2004 11:00 pm

by Dr.Dos

Perfection (imho as I do not like the CF looks there), looking so flat and underlines the slammed look.

Image

https://www.bike-components.de/de/3min1 ... arz-1-1-8-

by Weenie


BenScott144
Posts: 95
Joined: Tue May 12, 2020 4:00 pm

by BenScott144

Dr.Dos wrote:
Sat Apr 10, 2021 2:52 pm
Perfection (imho as I do not like the CF looks there), looking so flat and underlines the slammed look.

Image

https://www.bike-components.de/de/3min1 ... arz-1-1-8-
Who knew I could get so excited about a top cap... something so simple is so perfect

andreas
Posts: 234
Joined: Thu Jun 12, 2014 10:21 pm

by andreas

Supacaz Holographic, got a few similar items to bling up an otherwise matte black bike... bar end caps, bottle cages, bolts, tubeless valves, pulley wheel and rotors.
20190530_200316.jpg

RichTheRoadie
Tinker, Taylor, Tart
Posts: 2197
Joined: Sat Nov 29, 2008 8:00 pm
Location: Sydney, Aus.

by RichTheRoadie

Guilloche'd brass:

Image

gwilson
Posts: 124
Joined: Fri Jul 06, 2018 3:41 am
Location: Canada

by gwilson

Canadian flag + matches the frame
Attachments
vk-SQSplHCixwaRx7RD7pd-0ZJjfrbMhZ0ibsrIWmoU-1536x2048.jpeg

Steve Curtis
Posts: 609
Joined: Thu Jul 31, 2008 12:20 pm
Location: Hampshire UK, Dublin Ireland and Geneva Switzerland.

by Steve Curtis

Dr.Dos wrote:
Sat Apr 10, 2021 2:52 pm
Perfection (imho as I do not like the CF looks there), looking so flat and underlines the slammed look.

Image

https://www.bike-components.de/de/3min1 ... arz-1-1-8-
That's just clean a simple. One thing I like is the slightly tapered edge instead of a hard corner.

Maddie
Posts: 591
Joined: Tue Oct 17, 2017 5:44 am

by Maddie

RichTheRoadie wrote:
Tue Apr 13, 2021 2:10 am
Guilloche'd brass:

Image
Selfmade? Looks mesmerizing!

RichTheRoadie
Tinker, Taylor, Tart
Posts: 2197
Joined: Sat Nov 29, 2008 8:00 pm
Location: Sydney, Aus.

by RichTheRoadie

Maddie wrote:
Tue Apr 13, 2021 10:21 am
Selfmade? Looks mesmerizing!
Not self-made, no - it's from Kumo Cycles.

I got a camera shutter button to match, just for sh*ts & giggles! :lol:

BenScott144
Posts: 95
Joined: Tue May 12, 2020 4:00 pm

by BenScott144

Dr.Dos wrote:
Sat Apr 10, 2021 2:52 pm
Perfection (imho as I do not like the CF looks there), looking so flat and underlines the slammed look.

Image

https://www.bike-components.de/de/3min1 ... arz-1-1-8-
Such a shame they're only sold on that one site :(

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StanK
Posts: 412
Joined: Sat Oct 13, 2018 11:10 am
Location: Croatia

by StanK

Yes, very nice, very simple, clean lines, thin, flat ... I like it. And very light, but lightness comes with a price.
The first customer review on that page says a lot. Aluminum screw is not a good enough solution in that place.

BenScott144
Posts: 95
Joined: Tue May 12, 2020 4:00 pm

by BenScott144

StanK wrote:
Tue Apr 13, 2021 2:45 pm
Yes, very nice, very simple, clean lines, thin, flat ... I like it. And very light, but lightness comes with a price.
The first customer review on that page says a lot. Aluminum screw is not a good enough solution in that place.
Yeah, could buy the cap and swap out the screw though

joejack951
Posts: 988
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE
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by joejack951

BenScott144 wrote:
Tue Apr 13, 2021 3:10 pm
StanK wrote:
Tue Apr 13, 2021 2:45 pm
Yes, very nice, very simple, clean lines, thin, flat ... I like it. And very light, but lightness comes with a price.
The first customer review on that page says a lot. Aluminum screw is not a good enough solution in that place.
Yeah, could buy the cap and swap out the screw though
Or preload bearings using a steel screw, clamp stem, then replace the steel screw with the aluminum version. All it is doing is holding the cap in place at that point anyway.

My 'solution' to the top cap is to not use one at all. Here are some images of my bond-in-place steerer tube inserts which both reinforce the steerer where the stem clamps on and cap off the top of the steerer. A top cap (and a spacer) is used for preloading the bearings then removed after the stem clamp is tightened. The small plastic screw plugs the hole. I'm running an early version on my Hong Fu before I got the idea to make it flush on top.

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BenScott144
Posts: 95
Joined: Tue May 12, 2020 4:00 pm

by BenScott144

joejack951 wrote:
Tue Apr 13, 2021 3:43 pm
BenScott144 wrote:
Tue Apr 13, 2021 3:10 pm
StanK wrote:
Tue Apr 13, 2021 2:45 pm
Yes, very nice, very simple, clean lines, thin, flat ... I like it. And very light, but lightness comes with a price.
The first customer review on that page says a lot. Aluminum screw is not a good enough solution in that place.
Yeah, could buy the cap and swap out the screw though
Or preload bearings using a steel screw, clamp stem, then replace the steel screw with the aluminum version. All it is doing is holding the cap in place at that point anyway.

My 'solution' to the top cap is to not use one at all. Here are some images of my bond-in-place steerer tube inserts which both reinforce the steerer where the stem clamps on and cap off the top of the steerer. A top cap (and a spacer) is used for preloading the bearings then removed after the stem clamp is tightened. The small plastic screw plugs the hole. I'm running an early version on my Hong Fu before I got the idea to make it flush on top.

Image
Image
Image
Image
Oooh.
But if bonded in, can never change the height?

Steve Curtis
Posts: 609
Joined: Thu Jul 31, 2008 12:20 pm
Location: Hampshire UK, Dublin Ireland and Geneva Switzerland.

by Steve Curtis

If that screw wasn't dead in line it would piss me off looking at that every ride.
Last edited by Steve Curtis on Tue Apr 13, 2021 9:18 pm, edited 1 time in total.

by Weenie


joejack951
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Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE
Contact:

by joejack951

BenScott144 wrote:
Tue Apr 13, 2021 4:26 pm
Oooh.
But if bonded in, can never change the height?
There is a certain amount of commitment one must make it bonding the insert in place, but not unlike the commitment of running a stem slammed. Any shortening would require cutting through the insert. If a small adjustment (say 10-20mm), the remaining bonded 'tube' inside of the fork could just have a star nut driven into it. If making a drastic change (30-40mm), the small remaining ring could be carefully removed and a new insert bonded in place.

If you wanted to change heights back and forth as some do, you would simply leave the steerer taller than the stem, adding a spacer under it as desired.

If the concern was swapping between stems of different clamp heights, I'd recommend cutting the steerer for the tallest clamp and running a small spacer under the stem to compensate for shorter clamps, thus always achieving a flush top.

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