Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About
It is currently Wed Aug 31, 2016 3:35 am
Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed ✔ FIXED
- Tapatalk connection is currently broken ✔ FIXED
- Avatars cannot be uploaded ✔ FIXED

Please note that we will soon do some changes in WW board template design in case to get a fully mobile/desktop responsiveness board!
If you find more errors please post it here: http://weightweenies.starbike.com/forum/viewtopic.php?f=7&t=139062


All times are UTC+01:00





Post new topic  Reply to topic  [ 66 posts ]  Go to page Previous 1 2 3 4 5
Author Message
PostPosted: Fri Nov 23, 2012 5:09 pm 
Offline

Joined: Thu May 14, 2009 12:19 pm
Posts: 1397
Location: Norway
Without being abraded itself, or without abrading the contacting counterparts?

I'm not sure I fully understand how the cogwheels/chainrings would not be abraded just because the chain is hard.. but I'm not an engineer :-)


Top
   
PostPosted: Fri Nov 23, 2012 5:17 pm 
Offline
User avatar

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 8324
Location: Los Angeles / Glendale, California
DLC Cables interest me... so they never need to be lubed? Teflon-coated cables also claim the no-lube theory, but they too eventually creak.
Anything to prevent cables from making creaking sounds when they need to be re-lubed. :(

Or would Power Cordz be the only cable type that never, ever creaks?

_________________
Exp001 || Other projects in the works.


Top
   
PostPosted: Fri Nov 23, 2012 6:51 pm 
Offline
Tubbie Guru

Joined: Tue May 03, 2005 2:20 am
Posts: 5850
Location: Belgium
Hi,

Quote:
DLC Cables interest me... so they never need to be lubed? Teflon-coated cables also claim the no-lube theory, but they too eventually creak.


Always keep in mind what the cable is in contact with. In theory it does not require any lube to function but when dirt and grime get stuck between the housing and the cable you'd still have friction if this prevents the cable from moving around it.
At the end of the day it will still be the housing that going to suffer...


Quote:
Without being abraded itself, or without abrading the contacting counterparts?


Imagine two surfaces; one is rough the other is ultra smooth and has 0 friction. Will the latter wear down the former when moving over it?

Ciao, ;)

_________________
Being a snob is an expensive hobby.


Top
   
PostPosted: Wed Feb 13, 2013 8:47 pm 
Offline

Joined: Wed Feb 02, 2011 3:48 am
Posts: 1438
http://www.bikeradar.com/road/news/article/friction-facts-publishes-ultrafast-chain-lube-formula-36424/


Top
   
PostPosted: Wed Feb 13, 2013 9:21 pm 
Offline
User avatar

Joined: Thu May 04, 2006 4:43 pm
Posts: 5353
Location: Wherever there's a mountain beckoning to be climbed
I haven't seen the questions below addressed.
HammerTime2 wrote:
I don't see where he says how long the UltraFast chain retains its ultrafast performance. Per http://www.friction-facts.com/ultrafast-chains/shimano-dura-ace "When re-lubing your UltraFast chain, we suggest a 'dry' type high-PTFE-content or wax-based chain lubricant.". How long until relubing is necessary? How much does friction increase prior to relubing? How fast is the chain after relubing vs. when delivered as an UltraFast chain?
Also, the DIY suggestions at http://www.friction-facts.com/forum/ultrafast-chain-optimization-details-and-formula/#simple-forum-post-55 state "Use of a quick connect is suggested." Does a quick connect costs watts (even a fraction) vs. use of joining pin?


Top
   
PostPosted: Thu Feb 14, 2013 12:34 am 
Offline
Tubbie Guru

Joined: Tue May 03, 2005 2:20 am
Posts: 5850
Location: Belgium
Hi,

Hmmmm.....Remind me, how many Watts could optimistically be saved by the use of this method again?

All in all it reminds me of the much more simple method I used for years which is quite similar to the DIY method suggested. It does not include the use of lacquer thinner or denatured alcohol but uses the same jar shaking and a number of passes of citrus based degreaser, industrial degreaser (not sure what it's made of) and plain diesel oil (lamp oil).

The chain is then wiped dry by running it through a cotton cloth until there are no marks left on it. You'd still be surprised to see the amount of dark traces of grime on the cloth which is where I wish I had a US tank.
It is then put on the bike and lubed with Boeshield T9 (which contains parafin) and sprayed with dry PTFE for a few seconds whilst rotating the chain.
Boeshield T9 alone is actually adding friction. Adding PTFE makes it roll much more freely which is why I decided to abandon the parafin idea and use a lube charged with microscopic PTFE particles.

Not sure how good that method is but let's just say I'm rather skeptical about any method claiming to improve on it in the multiple Watt range.

Quote:
Does a quick connect costs watts (even a fraction) vs. use of joining pin?


I suppose that would very much depend on its manufacturing tolerances, its state of lubrication and the mileage it has seen.

Maybe someone ought to build a chain using nothing but quicklinks and measure the resulting drag? Who says bicycle chains need rollers anyway? :mrgreen:

Ciao, ;)

_________________
Being a snob is an expensive hobby.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 66 posts ]  Go to page Previous 1 2 3 4 5

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Friction free?

in Road

corky

5

473

Thu Oct 22, 2015 7:55 pm

Rick View the latest post

There are no new unread posts for this topic. Campa Eurus friction

in Road

Tomace

9

704

Fri Dec 18, 2015 3:23 pm

Tomace View the latest post

There are no new unread posts for this topic. Rotor ceramic PF4130 friction

in Road

Bliksemsnel

11

459

Thu Apr 21, 2016 12:33 am

Bliksemsnel View the latest post

There are no new unread posts for this topic. Campagnolo 1 kilogram test of friction in cable

in Road

excel11

3

691

Mon Dec 14, 2015 4:42 pm

excel11 View the latest post

There are no new unread posts for this topic. Help me - Component Upgrade on 2014 Cervelo R3

[ Go to page: 1 2 3 ]

in Road

rhyshan

35

2446

Fri Feb 19, 2016 9:54 am

rhyshan View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: Google [Bot], istigatrice, nicrump, surfinguru and 21 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:  
Powered by phpBB® Forum Software © phpBB Limited