Re: Bicycle Lubricants

On 11 Dec, 03:22, n...@xxxxxxxxx (Joe) wrote:
Topic: Bicycle Lubricants

What lubricants are recommended for the various parts of a bicycle?

In particular, wheels, bottom bracket, chain.

Depends who you ask.

See the Wipperman main catalogue for instance for lubrication of
industrial drive chains.

http://www.wippermann.com/data-live-wipperm/docs/pdf/Wippermann-catalogue-2007-E.pdf

pages 91 onwards. It does say that if you lube your chain using
manual application of oil, you need to do it every 8 hours.

It recommends molybdenum disulphide for furnace use, There is nothing
to suggest it would not be suitable for a bicycle. Experience shows
it to stick despite repeated rubbing and washing. An extract from the
catalogue follows.

• Oil or grease lubrication
Oils are normally used for continuous relubrication.
Grease is preferred, if the ambient air contains dust (lime,
talcum, flour etc.).
• Operating temperature
This is one of the most significant aspects of lubricant
selection. The decisive criterion is the temperature in the
chain bearing during operation.
• Viscosity
Viscosity must be high enough so that all the chain parts
are protected against wear and galling. However, despite
high viscosity the oil must be sufficiently capable of flow.
The following rules of thumb apply:
- Low bearing pressure, high chain
speed = low viscosity
- High bearing pressure, low chain
speed = high viscosity
- Low operating temperature = low viscosity
- High operating temperature= high viscosity
• Initial lubricant
It must have excellent corrosion protection qualities and
guarantee sufficient wear protection up to the first
relubrication. The envisaged operating conditions should
be taken into account.
• Load-bearing properties
Sufficient load-bearing properties of the lubricating oil film
help to reduce wear.
• Friction point wetting
The chain lubricant must be able to permeate the
lubrication gap autonomously



It also mention reduction of noise being a criteria for lubricant
selection. Choosing a differential, steering or gearbox oil is a good
choice and is immediately satisfying in this regard.
.

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