Round 3, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options
in [UK Motorcycles]
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From: 1949 Whizzer on 9 Oct 2009 09:49 On Oct 8, 11:27 pm, totallydeadmail...(a)yahoo.co.uk (The Evil Clown) wrote: > Ah! Are you saying that the OP lives in the desert, too? No. Just let it go. > > Are you saying that it's bad practice to use copper grease on the > threads, then? No. Just let it go.
From: 1949 Whizzer on 9 Oct 2009 09:50 On Oct 8, 11:27 pm, totallydeadmail...(a)yahoo.co.uk (The Evil Clown) wrote: > 1949 Whizzer <macmi...(a)gmail.com> wrote: > > Maybe you should practice holding your breath. It might be an > > advantage, considering your personal proclivities. > > I'm a free diver? No, you're a deep throater.
From: Chris H on 9 Oct 2009 10:00 The Older Gentleman wrote: > Chris H <fazer.1000thousand(a)ntlworld.com> wrote: > >> Champ wrote: >>> On Thu, 8 Oct 2009 21:33:32 +0100, totallydeadmailbox(a)yahoo.co.uk >>> (The Older Gentleman) wrote: >>> >>> <copper-based grease> >>> >>>> Something like 20 years ago I bought a bloody great tin of the >>>> stuff. It's still only half-used. >>> >>> Me too - I suspect it will outlast me. >> >> I'm making some assumptions here [1], but... >> >> Technically speaking the use of copper containing greases on >> aluminium would be wrong due to galvanic corrosion. One because they >> often provide good electrical conductivity and two because aluminium >> alloys and copper are over half a volt difference compared to a >> Calomel electrode when immersed in sea water. >> >> http://homepage.ntlworld.com/chris.hatfield/public/nomogram.jpg >> >> Of course the reality is that the grease excludes the water required >> for galvanic corrosion and aluminium shouldn't be getting hot enough >> to burn off the carrier. Water also has a handy habit of boiling >> away above ~ 100 deg C and normal people wash and dry their bikes >> after riding around on salted roads. All the same, I wouldn't >> recommend it. > > Thanks for a very solid techie explanation. I'll avoid immersing my > bikes in seatwer from now on ;-) OK. The relevance of sea water is that pure water is non-conductive. Add solutes that form ions and then it becomes conductive. Sea water was used for those tests because we were developing the first marine gas turbines. Wet roads covered in ammonium chloride (a by product of the Potash industry IIRC) or sodium chloride may deposit a solution that can be far more aggressive than sea water wrt corrosion. >> As an aside, don't use graphite greases on aluminium. The aluminium >> will be even more sacrificial. > > <Interested> > > Go on? Why? It's not on the chart, but graphite is even less negative than copper IYSWIM. i.e the potential difference (voltage) when the two are in contact in the presence of sea water is even greater. Don't have nightmares. ;-) -- Chris H, FZS1000, two#55 He's predictable, but that's to be expected. Please remove the numbers to reply
From: TOG on 9 Oct 2009 10:04 On 9 Oct, 14:50, 1949 Whizzer <macmi...(a)gmail.com> wrote: > On Oct 8, 11:27 pm, totallydeadmail...(a)yahoo.co.uk (The Evil Clown) > wrote: > > > 1949 Whizzer <macmi...(a)gmail.com> wrote: > > > Maybe you should practice holding your breath. It might be an > > > advantage, considering your personal proclivities. > > > I'm a free diver? > > No, you're a deep throater. Oh dear. And you want me to "let it go"? Tell you what, you trying making a post without a playground obscenity in it.....
From: Rob Kleinschmidt on 9 Oct 2009 11:14
On Oct 9, 4:26 am, "platypus" <monotr...(a)blueyonder.co.uk> wrote: > Andy Bonwick wrote: > > BMW splined shafts. > > Moly paste. Moly grease is grease with molybdenum in it, but not in > sufficient concentration for output shafts and the like. I'm sure we went > through this a few years ago - BMW sell some special unpronounceable stuff > for the purpose. And the lube of choice for BMWs is Honda Moly-Lube. |