[ARC5] Dynamotor Maintenance

[Roy Morgan]

On Jan 19, 2013, at 11:15 PM, J. Forster wrote:

> I am puzzled by your statement that Graphite is abrasive, especially  
> since
> it is widely used as a dry lubricant.
>
> Messy, for sure, but abrasive?

John,

Carbon is found in many forms, from diamond to walking human beings  
and ancient trees.  I think he means the stuff that is found as dust  
after the brushes in the dynamotor wear down a bit.  I would expect  
that under a microscope the black dust would appear as irregular,  
hard, granules that be quite abrasive, whereas graphite as used in  
lubricants would be flat, thin, wafer-like particles that would be  
quite slippery.  Some clay is like that.

Roy

Roy Morgan
k1lky at earthlink.net
K1LKY Since 1958 - Keep 'em Glowing!