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

Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Tue Sep 25, 2012 10:33 am 

Joined: Thu May 14, 2009 12:19 pm
Posts: 1250
Location: Norway
I've noticed that the anodized black finish on both my Shimano DA7900 crankset and the same type of finish on my Ultimate AL frame has been bleached or tarnished by sweat. I did a lot of climbing on Mallorca in 30-40°C heat this summer aswell as on Gran Canaria in the winter, and noticed it on the crankset and thought immediately that perhaps the sun had been the culprit in combination with sweat, however there's equal amounts of bleaching/wear/tarnishing in droplet shaped areas on the underside of my toptube - an area that hasn't seen much if any sun. I'd always thought anodized finishes were some of the toughest.

And yes, I wash/thoroughly clean my bike regularly. Usually 3-4 times a week, and I haven't used any strong cleaning compounds either, no degreaser and just a couple of drops of dish detergent on a sponge.. and I haven't been running my bike on a turbo/rollers indoors yet.

Now, what the heck does my sweat contain that ruins anodized finishing?

PostPosted: Tue Sep 25, 2012 10:53 am 
User avatar

Joined: Wed Oct 18, 2006 10:15 am
Posts: 220
salt ?

seriously though...
I actually have the same "issue". some people have more aggressive sweat composition than others.
I learnt it the hard way (stripped paint from an AL frame, than my look 381 lugs - AL - got the color all "bubbled", when i was running shimano DA7700 the levers and crank would get strange discolorations... and cable replacement was a monthly issue in summer).

The thing is - i live in Israel. so hot and humid... IIRC you are in northern Europe, right? so you do not get to "explore" your sweat as much as where it's hot and humid :(.
your Mallorca experience has been just that - hot and humid.

Anyhow - this taught me to choose full carbon (incl lugs) frames; carbon crank set & levers etc, which is overall a good idea (going to campy, that is).

don't be alarmed... its natural (for some, anyhow).


Posted: Tue Sep 25, 2012 10:53 am 

PostPosted: Tue Sep 25, 2012 4:23 pm 

Joined: Fri Jan 07, 2011 6:58 am
Posts: 957
Location: 604
There has to be chuck norris joke out there for this....

PostPosted: Tue Sep 25, 2012 5:40 pm 

Joined: Fri Apr 18, 2008 12:55 am
Posts: 156
I absolutely agree that different people's sweat can be dramatically different. We had a customer who would corrode Nokons on his De Rosa King in 3-6 months whereas I have been riding the same nokon beads for years with no issues (and I sweat a bit). I think it is both a cleaning issue and sweat composition issue. Sounds like the OP cleans his bike with some religion (like you should!), so def. your sweat. Maybe just get a lighter bike than you won't have to work as hard?

PostPosted: Wed Sep 26, 2012 1:25 pm 
Formerly known as wassertreter

Joined: Tue Apr 12, 2011 8:08 am
Posts: 2198
Location: Pedal Square
UV light can affect the a cheaply conducted (hence thin) anodization layer too, but one would hope that not to be the case with the brands named.

Bikes: Raw Ti, 650b flatbar CX

Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

Who is online

Users browsing this forum: plpete and 10 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. H Plus Sons Hard Anodized

in Everything wheels




Fri Dec 19, 2014 11:37 pm

bm0p700f View the latest post

There are no new unread posts for this topic. Toni Caad 10 anodized black.

in Introduce Yourself / Gallery - Please use metric weights.




Wed Jul 01, 2015 12:29 am

Multebear View the latest post

There are no new unread posts for this topic. Who Did the Dark Finish on DA 9000 Cranks?

in Road




Thu Nov 13, 2014 9:52 am

davidalone View the latest post

There are no new unread posts for this topic. Zipp sl145 faceplate finish

in Road




Fri Apr 24, 2015 8:58 pm

spud View the latest post

There are no new unread posts for this topic. Parlee Z2 frame and fork - 55cm, nude wax finish

in For sale - Pictures are mandatory 22-3-13




Fri May 08, 2015 5:44 pm

Beancouter View the latest post

It is currently Wed Jul 01, 2015 4:47 pm

All times are UTC + 1 hour

Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by

How to get rid of these ads? Just register!

Powered by phpBB