Primary chaincase cover allen screws

[Phil C]

Is it advisable to use any form of loctite on the allen screws which hold the primary chaincase cover in place?

(1965 B40F)

Phil.

[Bess]

Hi Phil,
            No, use a bit of grease especially if they are stainless.

Best wishes...

[AdrianS]

No
They don't normally work loose. Why make removal of them difficult in the future! +1 to using a bit of grease especially if they are stainless ( I use copper grease on stainless screws into alloy casing).

[chaz]

or copperslip, modern bikes are customised with alloy screws, these corrode ally to ally and snap off. never had a problem with old ones comming loose, more a pain when slots or cross get mis shapen

[Marshall]

Hi

Just an observation but I seem to remember an engineer telling me several years ago that copper lubricants/grease will promote bi-metal corrosion between aluminium and steel. That is the ally corrodes, deteriorates to a soft powder. Perhaps its safer to use ordinary grease just in case? Can anyone else confirm this? Perhaps its my dodgy memory!!!!

[Bess]

Hi,
    Generally on assembly with anything aluminium I use Ceramic anti-seize. On stainless steel nuts and bolts I use the Nickel anti-seize it prevents the stainless from galling together.

Bets wishes...

[chaz]

Hi

Just an observation but I seem to remember an engineer telling me several years ago that copper lubricants/grease will promote bi-metal corrosion between aluminium and steel. That is the ally corrodes, deteriorates to a soft powder. Perhaps its safer to use ordinary grease just in case? Can anyone else confirm this? Perhaps its my dodgy memory!!!!

Don't eat bacon, it can give you cancer....we still eat it.  I don't think after all these years it will make much difference especially with the film of oil that is ever present in threads. You won't have the bike long enough to see it as a cloud of dust. The mild steel and ally isn't the problem, it's the use of stainless that tends to cause it.

[berniej]

I use bacon fat 

Cheers,
Bernie

[Bess]

Hi,
     Nothing wrong with bacon fat, tallow could contain it, lovely lubrication  .

Originally stainless steel was sold with a thin film of lanolin to stop it reacting and galling, due to cost its now omitted and there's a need to lube it yourself.

Best wishes...

[Mike Farmer]

 

I use Vaseline on the threads and just under the screw heads. As a thought I would think that "saddle soap" would be ok as it contains lanolin.

Mike