Digital Image Studio wrote: > On 14/08/07, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote: >> On Aug 13, 2007, at 2:48 PM, frank theriault wrote: >> >>> Around here, spraying WD 40, or some thinnish oil that "creeps" works. >>> Spray down the seat tube, take off the headset and spray both the top >>> and down tubes, and to be safe, while you've to the BB out, spray up >>> the seat and down tubes. That should work.
>> Beware: Spraying WD40 on steel or aluminum surfaces *promotes* rust. >> WD40 is a water dispersal developed for the navy ... the name comes >> from "water dispersal formulation #40". As such, it is hygroscopic: >> it's designed to suck up water, and is used to wash down marine >> fittings to get the salt water off them, preparatory to painting and >> other protectants being applied. If you spray down a steel tube with >> it and leave it sit, it will suck up humidity from the air and put >> that water into proximity with the metal surface, promoting >> oxidation. You're supposed to use WD40 to wash away grease and water >> (wash the crud off stuff) then you spray a sticky, NON-hygroscopic > Not the stuff they sell as WD-40 here: > > http://www.wd40.com.au/WD-40.html Same formulation everywhere, Rob... <wnk> Experience shows it is NOT much of a lube. It has no extreme film properties, if you need to prevent rubbing or rolling contact, but sliding is not bad, if you keep the film moist. It WILL "dry out" which means the volatile carrier eventually goes evaporates, leaving a waxy, sticky, varnish-y residue, which has practically no advantageous properties except to stick things together. LONG time users who swear to using nothing but WD-40 exclusively finally admit to re-spraying their "protected" parts frequently, to maintain whatever protection they claim works for them. Used that way, it works. Sort of... Of course, used that way, it also keeps the environmental moisture away, and "works as advertised!" Don't count on it as a universal butt-saving, all purpose cleaner & lube, and you'll probably be happy with it. keith whaley -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
