In a message dated 10/8/00 12:33:15 PM, mjcatlin@POSTOFFICE.PACBELL.NET
writes:

<< My rubber hoses have about 61,000 miles on them with no problems.  I think
they are much more resistant to cracking than are the plastic pipes.  The
hoses are probably not very resistant to abrasion >>

Mike,

Rubber hoses may resist abrasion better than you think.  After all, sheet
rubber is use for masking in all manner of sandblasting work.

The reason not to use rubber hosing may be that, without the appropriate
provisions, there is no certainty that its cross-sectional profile will be
maintained throughout the run.  I do not know the topological function of
area vs. perimeter for the rubber hose but, I do know that in the extreme the
cross-sectional area can vary greatly.    Will this impede the functioning of
the cooling system?

Rich