HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 29 posts ] 
Go to page Previous  1, 2
Author Message
PostPosted: Fri Feb 07, 2014 3:40 pm 
Offline
User avatar

Joined: Wed Jan 19, 2011 11:14 am
Posts: 1194
Stolichnaya wrote:
I like Extralite stuff, it is beautifull machined, but I had to drill one of those expanders out after the threads siezed. It was a PITA.
Went with the MCFK and Carbon Ti versions. Both holding well. MCFK is very nicely made and a solid design.

I would not use these lightweight plugs to set the headset though. Use your standard compression plug to set, tighten everything up, remove the standard plug, insert the lighteright expander (and lightweight top cap, I assume) and then tighten everything up again, checking the torque on the stem bolts a second time is not a bad idea.



So you didn't use grease on the threads of your extralite expander and it seized :roll:
Sounds like a serious case of user error...

1. Gum gums are not as good as the extralites that's a WW fact.
2. Extralite expanders work.. Well and well enough to get your headset set properly also a WW fact. I reckon at least 70% of bikes on WW under the 6kg mark have extralite expanders maybe more
3. Carbon paste should always be used as should Ti prep or good quality grease.
4. I haven't heard of extralite expanders damaging steerers if used properly
5. They are still the lightest set up and if prepped right there is no need to first set the headset with a 'heavy expander first'

These points are of course IMO but if you do the research you'll see I'm telling the truth

_________________
project black


Top
 Profile  
 
PostPosted: Fri Feb 07, 2014 3:55 pm 
Offline

Joined: Sun Jun 17, 2007 6:56 pm
Posts: 646
sugarkane wrote:
3. Carbon paste should always be used as should Ti prep or good quality grease.


Where do you apply the carbon paste, to the inner walls of the steerer? Also, does Ti prep have any advantages over grease?

_________________
6.24kg CAAD10


Top
 Profile  
 
Posted: Fri Feb 07, 2014 3:55 pm 


Top
  
 
PostPosted: Fri Feb 07, 2014 4:36 pm 
Offline
User avatar

Joined: Wed Jan 19, 2011 11:14 am
Posts: 1194
on the contact points of the expander or the wall of the fork steerer with the carbon paste it doesn't mater which and personally i will always use Ti prep over grease on Ti or alloy bolts as my bike has no steel bolts and alloy is only mildly less reactive to galvanic corrosion than Ti so yea if you got it use the Ti prep, it holds the threads better and prevents more problems in the long run than straight up grease..

_________________
project black


Top
 Profile  
 
PostPosted: Fri Feb 07, 2014 4:51 pm 
Offline

Joined: Sun Jun 17, 2007 6:56 pm
Posts: 646
Thanks. So Ti bolts get Ti prep, all other bolts get grease. Check. Do you recommend a certain Ti prep.

Sorry for derailing the thread.

_________________
6.24kg CAAD10


Top
 Profile  
 
PostPosted: Fri Feb 07, 2014 5:10 pm 
Offline
User avatar

Joined: Wed Jan 19, 2011 11:14 am
Posts: 1194
Finish line ti prep is pretty darn good.
Awesome company's like ee cycle works give you Ti prep with your brakes..

And no all bolts should get ti prep if you have it.
Especially alloy bolts as when used In high salt environments like costal Australia they are just as bad as Ti bolts with galvanic corrosion.
If the bolt ain't steel, carbon or nylon then ti prep is your friend

_________________
project black


Top
 Profile  
 
PostPosted: Fri Feb 07, 2014 7:10 pm 
Offline

Joined: Sun Jun 17, 2007 6:56 pm
Posts: 646
Got it. I appreciate all the info.

_________________
6.24kg CAAD10


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 12:19 pm 
Offline
User avatar

Joined: Wed Oct 06, 2004 6:55 pm
Posts: 1875
Location: Vienna, AUT
Nice assumption, Sugarkane, but, no, you would be wrong.
I used Extralite alu paste and it siezed anyway.
But your sarcasm is appreciated...


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 1:58 pm 
Offline
User avatar

Joined: Sat Jun 23, 2007 12:41 am
Posts: 1262
sugarkane wrote:
And no all bolts should get ti prep if you have it.
Especially alloy bolts as when used In high salt environments like costal Australia they are just as bad as Ti bolts with galvanic corrosion.


Sorry?

Am I reading this correct...are you claiming Ti bolts get galvanic corrosion?

My understanding is that Calfee (head tube, BB and dropouts) and Colnago (BB) used Ti inserts due to the lack of expansion and galvanic corrosion?

Calfee Design - If metal must be used it should be titanium. Titanium, unlike steel and aluminum, is not susceptible to corrosion. Although a metal, it also has thermal expansion characteristics fairly similar to carbon fiber while aluminum and steel are quite different.

_________________
"It never gets easier, you just go faster..." - Greg Lemond

"I enjoy climbing...I enjoy seeing people disappear behind me." - Robert Millar


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 2:14 pm 
Offline

Joined: Sat Feb 23, 2008 6:33 pm
Posts: 238
For some reason, 2 different mechanics whom have extensive knowledge, have moved my cannondale expander plug to 2 new bikes I've had lit up. Their explanation was that it was better. I left it at that.


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 3:05 pm 
Offline

Joined: Tue Sep 11, 2012 6:07 pm
Posts: 539
Actually, this thread has provided quite a bit of helpful insight. Other than Fairwheel, any other vendors sell the Ultrastar 2's in the US?

_________________
2013 Madone 5
2012 SpeedConcept 7
2013 Superfly


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 4:26 pm 
Offline
User avatar

Joined: Wed Mar 06, 2013 4:23 pm
Posts: 263
Location: Austin, TX
Galvanic corrosion is caused by mixing metals, it's not the same as just oxidation (like rust). One type of metal becomes a cathode and the other the anode. If you mix Ti and Al then the Ti becomes a cathode and the Al the anode (which corrodes quickly) in the presence of an electrolyte (say...sweat or other salty water). Ti by itself is very resistant to corrosion but mixing is bad unless you put some prep on it and create a barrier between the two metals and to keep out a potential electrolyte. For reference here's a chart, the further apart the metals are, the more prone they are to galvanic corrosion.

Image

_________________
My Cervelo R5
My Cervelo S3
My MTB


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 4:59 pm 
Offline
User avatar

Joined: Wed Jan 19, 2011 11:14 am
Posts: 1194
Sorry wingnut I should have used the term dissimilar metal galvanic corrosion but yea.. Ti bolts and and alloy stem = trouble with out ti prep.. ;)

_________________
project black


Top
 Profile  
 
PostPosted: Fri Feb 14, 2014 6:08 pm 
Offline
User avatar

Joined: Wed Jan 19, 2011 11:14 am
Posts: 1194
And Stolichnaya have you used your bike a lot on a trainer or have a habit of sweating Heavy over the stem? Sorry for the sarcasm but unless the unit is exposed to a lot of salt given it's internal use seizing it would be pretty impressive.. Mines Ben in 4 diffenernt bikes and I once cut the steerer down with out removing it and nearly cut the thing in half

_________________
project black


Top
 Profile  
 
PostPosted: Mon Feb 17, 2014 5:46 pm 
Offline
User avatar

Joined: Wed Oct 06, 2004 6:55 pm
Posts: 1875
Location: Vienna, AUT
Sugarkane, you are on the same thought I have.

The bike that had the Extralite compression plug is the same that now has the MCFK. It was used on the trainer but also outdoors as well in damp conditions. It was about three weeks after installation when I went to adjust the stem and realized the plug would not come out.
My only three guesses are:
- Sweat (and I sweat a lot)
- Manufacturing tolerances between the top and bottom portions of the plug
- small burr or shavings that I did not see when preparing the threads that stuck
Although having many parts from Extralite, I cannot imagine the last two being an issue.

I switched over to the MCFK and have used it with the same Extralite alu grease and for a longer period in similar conditions (with the same top cap and bolt - both Extralite) and it has not siezed - checked it last night to make sure.

Would I use the Extralite plug again, sure. I like Extralite stuff and Sergio is a great guy with a fine sense of style, customer service and design excellence. In all honesty though, the design of the Carbon Ti and the McFK plugs appeal to me more because of the bigger and grooved surface of the part. Seems like the surface is less invasive when tightening inside a carbon tube.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 29 posts ] 
Go to page Previous  1, 2


Who is online

Users browsing this forum: Bing [Bot], Google [Bot], Google Adsense [Bot], SixThirteen, Tamu8104 and 52 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. kcnc/felt expander plug help

in Road

digiadaamore

2

408

Sat Nov 09, 2013 11:28 am

Mackers View the latest post

There are no new unread posts for this topic. expansion plug overtorque ?

in Road

Drpoomanchu

10

812

Thu Apr 17, 2014 3:33 pm

madcow View the latest post

There are no new unread posts for this topic. Cannondale guru needed, Compression Plug Question

in Road

Charlie1025

0

58

Thu Jul 24, 2014 2:33 am

Charlie1025 View the latest post

There are no new unread posts for this topic. Cannondale guru needed, Compression Plug Question

in Road

Charlie1025

8

303

Fri Jul 25, 2014 4:51 pm

numberSix View the latest post

There are no new unread posts for this topic. Need fork expander rec. for Specialized Tarmac sl4

in Road

mnmasotto

1

437

Sun Jan 12, 2014 11:51 pm

Chris_W View the latest post


It is currently Sat Jul 26, 2014 2:16 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB