A Snow and ski forum. SkiBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » SkiBanter forum » Skiing Newsgroups » Nordic Skiing
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Is "Base Oxidation" "Freezer Burn"?



 
 
Thread Tools Display Modes
  #1  
Old December 1st 08, 12:54 AM posted to rec.skiing.nordic
Gary Jacobson[_2_]
external usenet poster
 
Posts: 9
Default Is "Base Oxidation" "Freezer Burn"?

http://en.wikipedia.org/wiki/Freezer_burn

Seems that BNS and others are saying what they used to call base
oxidation isn't that at all. Not sure if they state what they think it
is, and some have theorized that it's not even a bad thing.

Don't know why no one with access to a mass spectometer hasn't taken a
look at that grey stuff's chemical composition and compare it to a
scraping of shiny base, but in any event I wonder if base oxidation is
caused by the same action as freezer burn. See above link.

Gary Jacobson
Rosendale, NY

Ads
  #2  
Old December 1st 08, 03:53 AM posted to rec.skiing.nordic
gr[_3_]
external usenet poster
 
Posts: 7
Default Is "Base Oxidation" "Freezer Burn"?

Gary Jacobson wrote:
http://en.wikipedia.org/wiki/Freezer_burn

Seems that BNS and others are saying what they used to call base
oxidation isn't that at all. Not sure if they state what they think it
is, and some have theorized that it's not even a bad thing.

Don't know why no one with access to a mass spectometer hasn't taken a
look at that grey stuff's chemical composition and compare it to a
scraping of shiny base, but in any event I wonder if base oxidation is
caused by the same action as freezer burn. See above link.

Gary Jacobson
Rosendale, NY

Freezer burn is explosion/disruption/loss of moisture from a cell. Since
white patches can occur on warm storage skis, I don't think the freezing
part has anything to do with it.
gr
  #3  
Old December 1st 08, 07:46 AM posted to rec.skiing.nordic
[email protected]
external usenet poster
 
Posts: 327
Default Is "Base Oxidation" "Freezer Burn"?


Don't know why no one with access to a mass spectometer hasn't taken a
look at that grey stuff's chemical composition and compare it to a
scraping of shiny base, but in any event I wonder if base oxidation is
caused by the same action as freezer burn. See above link.



Gary,

I hear you. Scientific research in the area of surface chemistry of
polypropylene ski bases is lacking. The myths/beliefs/facts about
pores, base oxidation, wax soaking, wax retention, microstructure etc
are all testable with a mass spec, optical/atomic_force/electron
microscopy, etc. This equipment is quite pricey for basement type
science (e.g. at least $100K for a decent atomic force microscope, but
the realistic range is more like $500K). Due to the cost, the
equipment is often shared between different labs (e.g. a department
may have a shared mass spec) which means that usage time is often
limited.

Surface chemistry in general (not just of ski bases) is a tough field
(“God created bulk but the Devil created surface” - by Fermi?)

I am wondering why wax companies never publish semi-scientific proof
of their claims (I've only seen semi-quantitative data on contact
angles on wax packs).

  #4  
Old December 2nd 08, 05:10 AM posted to rec.skiing.nordic
[email protected]
external usenet poster
 
Posts: 99
Default Is "Base Oxidation" "Freezer Burn"?

On Nov 30, 4:54*pm, Gary Jacobson wrote:
http://en.wikipedia.org/wiki/Freezer_burn

Seems that BNS and others are saying what they used to call base
oxidation isn't that at all. Not sure if they state what they think it
is, and some have theorized that it's not even a bad thing.

Don't know why no one with access to a mass spectometer hasn't taken a
look at that grey stuff's chemical composition and compare it to a
scraping of shiny base, but in any event I wonder if base oxidation is
caused by the same action as freezer burn. See above link.

Gary Jacobson
Rosendale, NY


Nathan Schultz & Zack Caldwall's Master Skier Pre-Season 2008 article
"Stonegriding for speed" speaks to the question. They write: "People
genearlly say that a base is 'oxidized', but those white spots on a
ski are generally dry regions or abraded fibers of UHMWPE, not
oxidized." The article notes that UHMWPE is sintered ultra-high
molecular wt. polyethylene or P-tex.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Whining about WC team suit design and big "smock" bibs... Jeff Potter (of OutYourBackdoor.com) Nordic Skiing 7 March 21st 08 04:16 AM
burton's "twin-like" vs "directional twin" TacoJohn Snowboarding 0 December 21st 07 03:46 AM
Another old Post of Scott lobbing "Insane Whacko" names at people Yabahoobs Alpine Skiing 6 March 2nd 07 05:37 PM


All times are GMT. The time now is 10:37 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SkiBanter.
The comments are property of their posters.