Expander Plug

Discuss light weight issues concerning road bikes & parts.
markdjr
Posts: 109
Joined: Sun Sep 17, 2017 10:21 pm

by markdjr

I figured the expander plug was an easy place to save a few grams, I had read good reviews about the mcfk plug but I can't find one in stock. Anyone use or familiar with either of the Schmolke plugs from r2? Would they be a suitable alternative or something better out there? Thanks for any info.

Pop
Posts: 153
Joined: Wed Oct 10, 2007 6:43 am

by Pop

Tune gumgum (perhaps difficult to find), or extralite ultrastar

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by Weenie


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Kayrehn
Posts: 1444
Joined: Thu Mar 24, 2011 6:06 pm

by Kayrehn

Am using the Schmolke plug, great weight savings because it takes the place of a plug and a cap simultaneously without the need of a bolt. It probably provides far greater support of the steerer tube too if that is a concern for you, as it is longer and has more contact area with the tube interior. Image

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beanbiken
Posts: 784
Joined: Tue Mar 18, 2014 10:13 pm
Location: Great Southern Land

by beanbiken

Tried the Schmolke SL version of their plug. Could not get it to grip the inside of the steerer tube. The peaks of the alloy knurling were actually being blunted, put a pair of orings in the grooves and all good. Grabbed a Carbon Ti unit and no such problems. Also have the Extralite on another bike also with zero issues.

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Coffee & carbon

Squashednuts
Posts: 543
Joined: Tue Apr 25, 2017 11:12 am
Location: Christchurch New Zealand

by Squashednuts

I'm just about to fit a new Schmolke expander and cap
Comes in a nice little boxImage

I was using an expander from JRC components, it's a similar price but like the @Beanbiken's experience the JRC became blunted and stopped gripping....this was after some time and being re fitted several times


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Fuji SL 5.5kg tubs/5.9kg viewtopic.php?f=10&t=157704

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beanbiken
Posts: 784
Joined: Tue Mar 18, 2014 10:13 pm
Location: Great Southern Land

by beanbiken

Yep that looks like the one, mine had a red bolt............. but other than that “appears"identical.

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Last edited by beanbiken on Tue Jul 31, 2018 9:23 am, edited 1 time in total.
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Coffee & carbon

jeanjacques
Posts: 305
Joined: Thu Apr 14, 2016 11:01 am
Location: France

by jeanjacques


NiFTY
Posts: 1368
Joined: Sat May 26, 2012 11:26 pm

by NiFTY

Have ultrastars on 2 bikes, il issues.
Evo 4.9kg SL3 6.64kg Slice RS 8.89kg viewtopic.php?f=10&t=110579" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

qwpy
Posts: 53
Joined: Tue Aug 04, 2015 6:34 pm

by qwpy

I use a cheap bbb brand expander plug to get the steering and headset tightened up as I like it.

Then i lossen the expander plug , take it out, and put in a tune gumgum.

tabl10s
Posts: 676
Joined: Wed Aug 23, 2017 5:40 am

by tabl10s

beanbiken wrote:
Tue Jul 31, 2018 7:08 am
Tried the Schmolke SL version of their plug. Could not get it to grip the inside of the steerer tube. The peaks of the alloy knurling were actually being blunted, put a pair of orings in the grooves and all good. Grabbed a Carbon Ti unit and no such problems. Also have the Extralite on another bike also with zero issues.

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Which is the overall best?
2015 Pinarello F8: 13.13lbs/5.915kg(w/Roval 64's).
2016 Rca: 11.07lbs/5.048kg.
2018 Rca.
2018 S-Works SL6 Ultralight: 12.03lbs.

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ms6073
Posts: 3157
Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

While probably not as lite as the Extralite Ultrastar, my vote is for the Cane Creek EEnut.
Michael - The Anaerobic Threshold is neither...

bilwit
Posts: 1381
Joined: Sun Apr 03, 2016 5:49 am
Location: Seattle, WA

by bilwit

NiFTY wrote:
Tue Jul 31, 2018 12:02 pm
Have ultrastars on 2 bikes, il issues.
same, though I have to say the design doesn't give me the most confidence ever (Extralite being notorious for parts "pinching" into carbon)

beanbiken
Posts: 784
Joined: Tue Mar 18, 2014 10:13 pm
Location: Great Southern Land

by beanbiken

tabl10s wrote:
Tue Jul 31, 2018 2:54 pm
beanbiken wrote:
Tue Jul 31, 2018 7:08 am
Tried the Schmolke SL version of their plug. Could not get it to grip the inside of the steerer tube. The peaks of the alloy knurling were actually being blunted, put a pair of orings in the grooves and all good. Grabbed a Carbon Ti unit and no such problems. Also have the Extralite on another bike also with zero issues.

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Which is the overall best?
Best???? I would say I am most comfortable with the Carbon Ti, spreads it force over a greater area than the Extralite and has not slipped up till now..........

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Coffee & carbon

PrinceEdward
Posts: 84
Joined: Wed Aug 01, 2018 3:20 pm

by PrinceEdward

Thm fork with its expander plug, real genius

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joejack951
Posts: 836
Joined: Fri Feb 18, 2005 6:50 pm
Location: Wilmington, DE
Contact:

by joejack951

What do you guys think of a design like the one in these videos? Yes, it's mine and yes, I need to finish the third video showing the bearing preload steps but you ought to be able to get the idea of how it will look when finished.

https://www.youtube.com/watch?v=WpDsfkyzLoI&t=2s
https://www.youtube.com/watch?v=Hj9Wi1hTw28&t=3s

by Weenie


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